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Merge tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux 

Pull Devicetree updates from Rob Herring:
 "The biggest highlight here is the start of using json-schema for DT
  bindings. Being able to validate bindings has been discussed for years
  with little progress.

   - Initial support for DT bindings using json-schema language. This is
     the start of converting DT bindings from free-form text to a
     structured format.

   - Reworking of initrd address initialization. This moves to using the
     phys address instead of virt addr in the DT parsing code. This
     rework was motivated by CONFIG_DEV_BLK_INITRD causing unnecessary
     rebuilding of lots of files.

   - Fix stale phandle entries in phandle cache

   - DT overlay validation improvements. This exposed several memory
     leak bugs which have been fixed.

   - Use node name and device_type helper functions in DT code

   - Last remaining conversions to using %pOFn printk specifier instead
     of device_node.name directly

   - Create new common RTC binding doc and move all trivial RTC devices
     out of trivial-devices.txt.

   - New bindings for Freescale MAG3110 magnetometer, Cadence Sierra
     PHY, and Xen shared memory

   - Update dtc to upstream version v1.4.7-57-gf267e674d145"

* tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (68 commits)
  of: __of_detach_node() - remove node from phandle cache
  of: of_node_get()/of_node_put() nodes held in phandle cache
  gpio-omap.txt: add reg and interrupts properties
  dt-bindings: mrvl,intc: fix a trivial typo
  dt-bindings: iio: magnetometer: add dt-bindings for freescale mag3110
  dt-bindings: Convert trivial-devices.txt to json-schema
  dt-bindings: arm: mrvl: amend Browstone compatible string
  dt-bindings: arm: Convert Tegra board/soc bindings to json-schema
  dt-bindings: arm: Convert ZTE board/soc bindings to json-schema
  dt-bindings: arm: Add missing Xilinx boards
  dt-bindings: arm: Convert Xilinx board/soc bindings to json-schema
  dt-bindings: arm: Convert VIA board/soc bindings to json-schema
  dt-bindings: arm: Convert ST STi board/soc bindings to json-schema
  dt-bindings: arm: Convert SPEAr board/soc bindings to json-schema
  dt-bindings: arm: Convert CSR SiRF board/soc bindings to json-schema
  dt-bindings: arm: Convert QCom board/soc bindings to json-schema
  dt-bindings: arm: Convert TI nspire board/soc bindings to json-schema
  dt-bindings: arm: Convert TI davinci board/soc bindings to json-schema
  dt-bindings: arm: Convert Calxeda board/soc bindings to json-schema
  dt-bindings: arm: Convert Altera board/soc bindings to json-schema
  ...
This commit is contained in:
Linus Torvalds 2018-12-28 20:08:34 -08:00
parent 24dc83635f 5801169a2e
commit 030672aea8
112 changed files with 3460 additions and 1771 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored
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@ -15,6 +15,7 @@
*.bin
*.bz2
*.c.[012]*.*
*.dt.yaml
*.dtb
*.dtb.S
*.dwo

2
Documentation/Makefile
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@ -2,7 +2,7 @@
# Makefile for Sphinx documentation
#
subdir-y :=
subdir-y := devicetree/bindings/
# You can set these variables from the command line.
SPHINXBUILD = sphinx-build

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*.example.dts
processed-schema.yaml

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# SPDX-License-Identifier: GPL-2.0
DT_DOC_CHECKER ?= dt-doc-validate
DT_EXTRACT_EX ?= dt-extract-example
DT_MK_SCHEMA ?= dt-mk-schema
DT_MK_SCHEMA_FLAGS := $(if $(DT_SCHEMA_FILES), -u)
quiet_cmd_chk_binding = CHKDT $(patsubst $(srctree)/%,%,$<)
cmd_chk_binding = $(DT_DOC_CHECKER) $< ; \
$(DT_EXTRACT_EX) $< > $@
$(obj)/%.example.dts: $(src)/%.yaml FORCE
$(call if_changed,chk_binding)
DT_TMP_SCHEMA := processed-schema.yaml
extra-y += $(DT_TMP_SCHEMA)
quiet_cmd_mk_schema = SCHEMA $@
cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(filter-out FORCE, $^)
DT_DOCS = $(shell cd $(srctree)/$(src) && find * -name '*.yaml')
DT_SCHEMA_FILES ?= $(addprefix $(src)/,$(DT_DOCS))
extra-y += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
extra-y += $(patsubst $(src)/%.yaml,%.example.dtb, $(DT_SCHEMA_FILES))
$(obj)/$(DT_TMP_SCHEMA): $(DT_SCHEMA_FILES) FORCE
$(call if_changed,mk_schema)

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Documentation/devicetree/bindings/arm/altera.txt
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Altera's SoCFPGA platform device tree bindings
---------------------------------------------
Boards with Cyclone 5 SoC:
Required root node properties:
compatible = "altr,socfpga-cyclone5", "altr,socfpga";
Boards with Arria 5 SoC:
Required root node properties:
compatible = "altr,socfpga-arria5", "altr,socfpga";
Boards with Arria 10 SoC:
Required root node properties:
compatible = "altr,socfpga-arria10", "altr,socfpga";

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/altera.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Altera's SoCFPGA platform device tree bindings
maintainers:
- Dinh Nguyen <dinguyen@kernel.org>
properties:
compatible:
items:
- enum:
- altr,socfpga-cyclone5
- altr,socfpga-arria5
- altr,socfpga-arria10
- const: altr,socfpga
...

11
Documentation/devicetree/bindings/arm/altera/socfpga-clk-manager.txt
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Altera SOCFPGA Clock Manager
Required properties:
- compatible : "altr,clk-mgr"
- reg : Should contain base address and length for Clock Manager
Example:
clkmgr@ffd04000 {
compatible = "altr,clk-mgr";
reg = <0xffd04000 0x1000>;
};

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/altera/socfpga-clk-manager.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Altera SOCFPGA Clock Manager
maintainers:
- Dinh Nguyen <dinguyen@kernel.org>
description: test
properties:
compatible:
items:
- const: altr,clk-mgr
reg:
maxItems: 1
required:
- compatible
examples:
- |
clkmgr@ffd04000 {
compatible = "altr,clk-mgr";
reg = <0xffd04000 0x1000>;
};
...

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Calxeda Platforms Device Tree Bindings
-----------------------------------------------
Boards with Calxeda Cortex-A9 based ECX-1000 (Highbank) SOC shall have the
following properties.
Required root node properties:
- compatible = "calxeda,highbank";
Boards with Calxeda Cortex-A15 based ECX-2000 SOC shall have the following
properties.
Required root node properties:
- compatible = "calxeda,ecx-2000";

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/calxeda.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Calxeda Platforms Device Tree Bindings
maintainers:
- Rob Herring <robh@kernel.org>
description: |+
Bindings for boards with Calxeda Cortex-A9 based ECX-1000 (Highbank) SOC
or Cortex-A15 based ECX-2000 SOCs
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
- calxeda,highbank
- calxeda,ecx-2000

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=================
ARM CPUs bindings
=================
The device tree allows to describe the layout of CPUs in a system through
the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
defining properties for every cpu.
Bindings for CPU nodes follow the Devicetree Specification, available from:
https://www.devicetree.org/specifications/
with updates for 32-bit and 64-bit ARM systems provided in this document.
================================
Convention used in this document
================================
This document follows the conventions described in the Devicetree
Specification, with the addition:
- square brackets define bitfields, eg reg[7:0] value of the bitfield in
the reg property contained in bits 7 down to 0
=====================================
cpus and cpu node bindings definition
=====================================
The ARM architecture, in accordance with the Devicetree Specification,
requires the cpus and cpu nodes to be present and contain the properties
described below.
- cpus node
Description: Container of cpu nodes
The node name must be "cpus".
A cpus node must define the following properties:
- #address-cells
Usage: required
Value type: <u32>
Definition depends on ARM architecture version and
configuration:
# On uniprocessor ARM architectures previous to v7
value must be 1, to enable a simple enumeration
scheme for processors that do not have a HW CPU
identification register.
# On 32-bit ARM 11 MPcore, ARM v7 or later systems
value must be 1, that corresponds to CPUID/MPIDR
registers sizes.
# On ARM v8 64-bit systems value should be set to 2,
that corresponds to the MPIDR_EL1 register size.
If MPIDR_EL1[63:32] value is equal to 0 on all CPUs
in the system, #address-cells can be set to 1, since
MPIDR_EL1[63:32] bits are not used for CPUs
identification.
- #size-cells
Usage: required
Value type: <u32>
Definition: must be set to 0
- cpu node
Description: Describes a CPU in an ARM based system
PROPERTIES
- device_type
Usage: required
Value type: <string>
Definition: must be "cpu"
- reg
Usage and definition depend on ARM architecture version and
configuration:
# On uniprocessor ARM architectures previous to v7
this property is required and must be set to 0.
# On ARM 11 MPcore based systems this property is
required and matches the CPUID[11:0] register bits.
Bits [11:0] in the reg cell must be set to
bits [11:0] in CPU ID register.
All other bits in the reg cell must be set to 0.
# On 32-bit ARM v7 or later systems this property is
required and matches the CPU MPIDR[23:0] register
bits.
Bits [23:0] in the reg cell must be set to
bits [23:0] in MPIDR.
All other bits in the reg cell must be set to 0.
# On ARM v8 64-bit systems this property is required
and matches the MPIDR_EL1 register affinity bits.
* If cpus node's #address-cells property is set to 2
The first reg cell bits [7:0] must be set to
bits [39:32] of MPIDR_EL1.
The second reg cell bits [23:0] must be set to
bits [23:0] of MPIDR_EL1.
* If cpus node's #address-cells property is set to 1
The reg cell bits [23:0] must be set to bits [23:0]
of MPIDR_EL1.
All other bits in the reg cells must be set to 0.
- compatible:
Usage: required
Value type: <string>
Definition: should be one of:
"arm,arm710t"
"arm,arm720t"
"arm,arm740t"
"arm,arm7ej-s"
"arm,arm7tdmi"
"arm,arm7tdmi-s"
"arm,arm9es"
"arm,arm9ej-s"
"arm,arm920t"
"arm,arm922t"
"arm,arm925"
"arm,arm926e-s"
"arm,arm926ej-s"
"arm,arm940t"
"arm,arm946e-s"
"arm,arm966e-s"
"arm,arm968e-s"
"arm,arm9tdmi"
"arm,arm1020e"
"arm,arm1020t"
"arm,arm1022e"
"arm,arm1026ej-s"
"arm,arm1136j-s"
"arm,arm1136jf-s"
"arm,arm1156t2-s"
"arm,arm1156t2f-s"
"arm,arm1176jzf"
"arm,arm1176jz-s"
"arm,arm1176jzf-s"
"arm,arm11mpcore"
"arm,cortex-a5"
"arm,cortex-a7"
"arm,cortex-a8"
"arm,cortex-a9"
"arm,cortex-a12"
"arm,cortex-a15"
"arm,cortex-a17"
"arm,cortex-a53"
"arm,cortex-a57"
"arm,cortex-a72"
"arm,cortex-a73"
"arm,cortex-m0"
"arm,cortex-m0+"
"arm,cortex-m1"
"arm,cortex-m3"
"arm,cortex-m4"
"arm,cortex-r4"
"arm,cortex-r5"
"arm,cortex-r7"
"brcm,brahma-b15"
"brcm,brahma-b53"
"brcm,vulcan"
"cavium,thunder"
"cavium,thunder2"
"faraday,fa526"
"intel,sa110"
"intel,sa1100"
"marvell,feroceon"
"marvell,mohawk"
"marvell,pj4a"
"marvell,pj4b"
"marvell,sheeva-v5"
"nvidia,tegra132-denver"
"nvidia,tegra186-denver"
"nvidia,tegra194-carmel"
"qcom,krait"
"qcom,kryo"
"qcom,kryo385"
"qcom,scorpion"
- enable-method
Value type: <stringlist>
Usage and definition depend on ARM architecture version.
# On ARM v8 64-bit this property is required and must
be one of:
"psci"
"spin-table"
# On ARM 32-bit systems this property is optional and
can be one of:
"actions,s500-smp"
"allwinner,sun6i-a31"
"allwinner,sun8i-a23"
"allwinner,sun9i-a80-smp"
"amlogic,meson8-smp"
"amlogic,meson8b-smp"
"arm,realview-smp"
"brcm,bcm11351-cpu-method"
"brcm,bcm23550"
"brcm,bcm2836-smp"
"brcm,bcm-nsp-smp"
"brcm,brahma-b15"
"marvell,armada-375-smp"
"marvell,armada-380-smp"
"marvell,armada-390-smp"
"marvell,armada-xp-smp"
"marvell,98dx3236-smp"
"mediatek,mt6589-smp"
"mediatek,mt81xx-tz-smp"
"qcom,gcc-msm8660"
"qcom,kpss-acc-v1"
"qcom,kpss-acc-v2"
"renesas,apmu"
"renesas,r9a06g032-smp"
"rockchip,rk3036-smp"
"rockchip,rk3066-smp"
"ste,dbx500-smp"
- cpu-release-addr
Usage: required for systems that have an "enable-method"
property value of "spin-table".
Value type: <prop-encoded-array>
Definition:
# On ARM v8 64-bit systems must be a two cell
property identifying a 64-bit zero-initialised
memory location.
- qcom,saw
Usage: required for systems that have an "enable-method"
property value of "qcom,kpss-acc-v1" or
"qcom,kpss-acc-v2"
Value type: <phandle>
Definition: Specifies the SAW[1] node associated with this CPU.
- qcom,acc
Usage: required for systems that have an "enable-method"
property value of "qcom,kpss-acc-v1" or
"qcom,kpss-acc-v2"
Value type: <phandle>
Definition: Specifies the ACC[2] node associated with this CPU.
- cpu-idle-states
Usage: Optional
Value type: <prop-encoded-array>
Definition:
# List of phandles to idle state nodes supported
by this cpu [3].
- capacity-dmips-mhz
Usage: Optional
Value type: <u32>
Definition:
# u32 value representing CPU capacity [4] in
DMIPS/MHz, relative to highest capacity-dmips-mhz
in the system.
- rockchip,pmu
Usage: optional for systems that have an "enable-method"
property value of "rockchip,rk3066-smp"
While optional, it is the preferred way to get access to
the cpu-core power-domains.
Value type: <phandle>
Definition: Specifies the syscon node controlling the cpu core
power domains.
- dynamic-power-coefficient
Usage: optional
Value type: <prop-encoded-array>
Definition: A u32 value that represents the running time dynamic
power coefficient in units of uW/MHz/V^2. The
coefficient can either be calculated from power
measurements or derived by analysis.
The dynamic power consumption of the CPU is
proportional to the square of the Voltage (V) and
the clock frequency (f). The coefficient is used to
calculate the dynamic power as below -
Pdyn = dynamic-power-coefficient * V^2 * f
where voltage is in V, frequency is in MHz.
Example 1 (dual-cluster big.LITTLE system 32-bit):
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <0x0>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <0x1>;
};
cpu@100 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x100>;
};
cpu@101 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x101>;
};
};
Example 2 (Cortex-A8 uniprocessor 32-bit system):
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a8";
reg = <0x0>;
};
};
Example 3 (ARM 926EJ-S uniprocessor 32-bit system):
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,arm926ej-s";
reg = <0x0>;
};
};
Example 4 (ARM Cortex-A57 64-bit system):
cpus {
#size-cells = <0>;
#address-cells = <2>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x0>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x1>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10000>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10001>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x0>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x1>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10000>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10001>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
};
--
[1] arm/msm/qcom,saw2.txt
[2] arm/msm/qcom,kpss-acc.txt
[3] ARM Linux kernel documentation - idle states bindings
Documentation/devicetree/bindings/arm/idle-states.txt
[4] ARM Linux kernel documentation - cpu capacity bindings
Documentation/devicetree/bindings/arm/cpu-capacity.txt

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/cpus.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM CPUs bindings
maintainers:
- Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
description: |+
The device tree allows to describe the layout of CPUs in a system through
the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
defining properties for every cpu.
Bindings for CPU nodes follow the Devicetree Specification, available from:
https://www.devicetree.org/specifications/
with updates for 32-bit and 64-bit ARM systems provided in this document.
================================
Convention used in this document
================================
This document follows the conventions described in the Devicetree
Specification, with the addition:
- square brackets define bitfields, eg reg[7:0] value of the bitfield in
the reg property contained in bits 7 down to 0
=====================================
cpus and cpu node bindings definition
=====================================
The ARM architecture, in accordance with the Devicetree Specification,
requires the cpus and cpu nodes to be present and contain the properties
described below.
properties:
$nodename:
const: cpus
description: Container of cpu nodes
'#address-cells':
enum: [1, 2]
description: |
Definition depends on ARM architecture version and configuration:
On uniprocessor ARM architectures previous to v7
value must be 1, to enable a simple enumeration
scheme for processors that do not have a HW CPU
identification register.
On 32-bit ARM 11 MPcore, ARM v7 or later systems
value must be 1, that corresponds to CPUID/MPIDR
registers sizes.
On ARM v8 64-bit systems value should be set to 2,
that corresponds to the MPIDR_EL1 register size.
If MPIDR_EL1[63:32] value is equal to 0 on all CPUs
in the system, #address-cells can be set to 1, since
MPIDR_EL1[63:32] bits are not used for CPUs
identification.
'#size-cells':
const: 0
patternProperties:
'^cpu@[0-9a-f]+$':
properties:
device_type:
const: cpu
reg:
maxItems: 1
description: |
Usage and definition depend on ARM architecture version and
configuration:
On uniprocessor ARM architectures previous to v7
this property is required and must be set to 0.
On ARM 11 MPcore based systems this property is
required and matches the CPUID[11:0] register bits.
Bits [11:0] in the reg cell must be set to
bits [11:0] in CPU ID register.
All other bits in the reg cell must be set to 0.
On 32-bit ARM v7 or later systems this property is
required and matches the CPU MPIDR[23:0] register
bits.
Bits [23:0] in the reg cell must be set to
bits [23:0] in MPIDR.
All other bits in the reg cell must be set to 0.
On ARM v8 64-bit systems this property is required
and matches the MPIDR_EL1 register affinity bits.
* If cpus node's #address-cells property is set to 2
The first reg cell bits [7:0] must be set to
bits [39:32] of MPIDR_EL1.
The second reg cell bits [23:0] must be set to
bits [23:0] of MPIDR_EL1.
* If cpus node's #address-cells property is set to 1
The reg cell bits [23:0] must be set to bits [23:0]
of MPIDR_EL1.
All other bits in the reg cells must be set to 0.
compatible:
items:
- enum:
- arm,arm710t
- arm,arm720t
- arm,arm740t
- arm,arm7ej-s
- arm,arm7tdmi
- arm,arm7tdmi-s
- arm,arm9es
- arm,arm9ej-s
- arm,arm920t
- arm,arm922t
- arm,arm925
- arm,arm926e-s
- arm,arm926ej-s
- arm,arm940t
- arm,arm946e-s
- arm,arm966e-s
- arm,arm968e-s
- arm,arm9tdmi
- arm,arm1020e
- arm,arm1020t
- arm,arm1022e
- arm,arm1026ej-s
- arm,arm1136j-s
- arm,arm1136jf-s
- arm,arm1156t2-s
- arm,arm1156t2f-s
- arm,arm1176jzf
- arm,arm1176jz-s
- arm,arm1176jzf-s
- arm,arm11mpcore
- arm,armv8 # Only for s/w models
- arm,cortex-a5
- arm,cortex-a7
- arm,cortex-a8
- arm,cortex-a9
- arm,cortex-a12
- arm,cortex-a15
- arm,cortex-a17
- arm,cortex-a53
- arm,cortex-a57
- arm,cortex-a72
- arm,cortex-a73
- arm,cortex-m0
- arm,cortex-m0+
- arm,cortex-m1
- arm,cortex-m3
- arm,cortex-m4
- arm,cortex-r4
- arm,cortex-r5
- arm,cortex-r7
- brcm,brahma-b15
- brcm,brahma-b53
- brcm,vulcan
- cavium,thunder
- cavium,thunder2
- faraday,fa526
- intel,sa110
- intel,sa1100
- marvell,feroceon
- marvell,mohawk
- marvell,pj4a
- marvell,pj4b
- marvell,sheeva-v5
- marvell,sheeva-v7
- nvidia,tegra132-denver
- nvidia,tegra186-denver
- nvidia,tegra194-carmel
- qcom,krait
- qcom,kryo
- qcom,kryo385
- qcom,scorpion
enable-method:
allOf:
- $ref: '/schemas/types.yaml#/definitions/string'
- oneOf:
# On ARM v8 64-bit this property is required
- enum:
- psci
- spin-table
# On ARM 32-bit systems this property is optional
- enum:
- actions,s500-smp
- allwinner,sun6i-a31
- allwinner,sun8i-a23
- allwinner,sun9i-a80-smp
- allwinner,sun8i-a83t-smp
- amlogic,meson8-smp
- amlogic,meson8b-smp
- arm,realview-smp
- brcm,bcm11351-cpu-method
- brcm,bcm23550
- brcm,bcm2836-smp
- brcm,bcm63138
- brcm,bcm-nsp-smp
- brcm,brahma-b15
- marvell,armada-375-smp
- marvell,armada-380-smp
- marvell,armada-390-smp
- marvell,armada-xp-smp
- marvell,98dx3236-smp
- mediatek,mt6589-smp
- mediatek,mt81xx-tz-smp
- qcom,gcc-msm8660
- qcom,kpss-acc-v1
- qcom,kpss-acc-v2
- renesas,apmu
- renesas,r9a06g032-smp
- rockchip,rk3036-smp
- rockchip,rk3066-smp
- ste,dbx500-smp
cpu-release-addr:
$ref: '/schemas/types.yaml#/definitions/uint64'
description:
Required for systems that have an "enable-method"
property value of "spin-table".
On ARM v8 64-bit systems must be a two cell
property identifying a 64-bit zero-initialised
memory location.
cpu-idle-states:
$ref: '/schemas/types.yaml#/definitions/phandle-array'
description: |
List of phandles to idle state nodes supported
by this cpu (see ./idle-states.txt).
capacity-dmips-mhz:
$ref: '/schemas/types.yaml#/definitions/uint32'
description:
u32 value representing CPU capacity (see ./cpu-capacity.txt) in
DMIPS/MHz, relative to highest capacity-dmips-mhz
in the system.
dynamic-power-coefficient:
$ref: '/schemas/types.yaml#/definitions/uint32'
description:
A u32 value that represents the running time dynamic
power coefficient in units of uW/MHz/V^2. The
coefficient can either be calculated from power
measurements or derived by analysis.
The dynamic power consumption of the CPU is
proportional to the square of the Voltage (V) and
the clock frequency (f). The coefficient is used to
calculate the dynamic power as below -
Pdyn = dynamic-power-coefficient * V^2 * f
where voltage is in V, frequency is in MHz.
qcom,saw:
$ref: '/schemas/types.yaml#/definitions/phandle'
description: |
Specifies the SAW* node associated with this CPU.
Required for systems that have an "enable-method" property
value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2"
* arm/msm/qcom,saw2.txt
qcom,acc:
$ref: '/schemas/types.yaml#/definitions/phandle'
description: |
Specifies the ACC* node associated with this CPU.
Required for systems that have an "enable-method" property
value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2"
* arm/msm/qcom,kpss-acc.txt
rockchip,pmu:
$ref: '/schemas/types.yaml#/definitions/phandle'
description: |
Specifies the syscon node controlling the cpu core power domains.
Optional for systems that have an "enable-method"
property value of "rockchip,rk3066-smp"
While optional, it is the preferred way to get access to
the cpu-core power-domains.
required:
- device_type
- reg
- compatible
dependencies:
cpu-release-addr: [enable-method]
rockchip,pmu: [enable-method]
required:
- '#address-cells'
- '#size-cells'
examples:
- |
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <0x0>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <0x1>;
};
cpu@100 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x100>;
};
cpu@101 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x101>;
};
};
- |
// Example 2 (Cortex-A8 uniprocessor 32-bit system):
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a8";
reg = <0x0>;
};
};
- |
// Example 3 (ARM 926EJ-S uniprocessor 32-bit system):
cpus {
#size-cells = <0>;
#address-cells = <1>;
cpu@0 {
device_type = "cpu";
compatible = "arm,arm926ej-s";
reg = <0x0>;
};
};
- |
// Example 4 (ARM Cortex-A57 64-bit system):
cpus {
#size-cells = <0>;
#address-cells = <2>;
cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x0>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x1>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10000>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10001>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@10101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x0 0x10101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x0>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x1>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100000101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010000 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10000>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010001 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10001>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010100 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10100>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
cpu@100010101 {
device_type = "cpu";
compatible = "arm,cortex-a57";
reg = <0x1 0x10101>;
enable-method = "spin-table";
cpu-release-addr = <0 0x20000000>;
};
};
...

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Texas Instruments DaVinci Platforms Device Tree Bindings
--------------------------------------------------------
DA850/OMAP-L138/AM18x Evaluation Module (EVM) board
Required root node properties:
- compatible = "ti,da850-evm", "ti,da850";
DA850/OMAP-L138/AM18x L138/C6748 Development Kit (LCDK) board
Required root node properties:
- compatible = "ti,da850-lcdk", "ti,da850";
EnBW AM1808 based CMC board
Required root node properties:
- compatible = "enbw,cmc", "ti,da850;
LEGO MINDSTORMS EV3 (AM1808 based)
Required root node properties:
- compatible = "lego,ev3", "ti,da850";
Generic DaVinci Boards
----------------------
DA850/OMAP-L138/AM18x generic board
Required root node properties:
- compatible = "ti,da850";

2
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@ -11,4 +11,4 @@ Required root node properties:
MMP2 Brownstone Board
Required root node properties:
- compatible = "mrvl,mmp2-brownstone";
- compatible = "mrvl,mmp2-brownstone", "mrvl,mmp2";

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TI-NSPIRE calculators
Required properties:
- compatible: Compatible property value should contain "ti,nspire".
CX models should have "ti,nspire-cx"
Touchpad models should have "ti,nspire-tp"
Clickpad models should have "ti,nspire-clp"
Example:
/ {
model = "TI-NSPIRE CX";
compatible = "ti,nspire-cx";
...

46
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* ARM Primecell Peripherals
ARM, Ltd. Primecell peripherals have a standard id register that can be used to
identify the peripheral type, vendor, and revision. This value can be used for
driver matching.
Required properties:
- compatible : should be a specific name for the peripheral and
"arm,primecell". The specific name will match the ARM
engineering name for the logic block in the form: "arm,pl???"
Optional properties:
- arm,primecell-periphid : Value to override the h/w value with
- clocks : From common clock binding. First clock is phandle to clock for apb
pclk. Additional clocks are optional and specific to those peripherals.
- clock-names : From common clock binding. Shall be "apb_pclk" for first clock.
- dmas : From common DMA binding. If present, refers to one or more dma channels.
- dma-names : From common DMA binding, needs to match the 'dmas' property.
Devices with exactly one receive and transmit channel shall name
these "rx" and "tx", respectively.
- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt
- pinctrl-names : Names corresponding to the numbered pinctrl states
- interrupts : one or more interrupt specifiers
- interrupt-names : names corresponding to the interrupts properties
Example:
serial@fff36000 {
compatible = "arm,pl011", "arm,primecell";
arm,primecell-periphid = <0x00341011>;
clocks = <&pclk>;
clock-names = "apb_pclk";
dmas = <&dma-controller 4>, <&dma-controller 5>;
dma-names = "rx", "tx";
pinctrl-0 = <&uart0_default_mux>, <&uart0_default_mode>;
pinctrl-1 = <&uart0_sleep_mode>;
pinctrl-names = "default","sleep";
interrupts = <0 11 0x4>;
};

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@ -0,0 +1,36 @@
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/primecell.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Primecell Peripherals
maintainers:
- Rob Herring <robh@kernel.org>
description: |+
ARM, Ltd. Primecell peripherals have a standard id register that can be used to
identify the peripheral type, vendor, and revision. This value can be used for
driver matching.
properties:
compatible:
contains:
const: arm,primecell
description:
Should be a specific name for the peripheral followed by "arm,primecell".
The specific name will match the ARM engineering name for the logic block
in the form "arm,pl???"
arm,primecell-periphid:
$ref: /schemas/types.yaml#/definitions/uint32
description: Value to override the h/w ID value
clocks:
minItems: 1
maxItems: 32
clock-names:
contains:
const: apb_pclk
additionalItems: true
...

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QCOM device tree bindings
-------------------------
Some qcom based bootloaders identify the dtb blob based on a set of
device properties like SoC and platform and revisions of those components.
To support this scheme, we encode this information into the board compatible
string.
Each board must specify a top-level board compatible string with the following
format:
compatible = "qcom,<SoC>[-<soc_version>][-<foundry_id>]-<board>[/<subtype>][-<board_version>]"
The 'SoC' and 'board' elements are required. All other elements are optional.
The 'SoC' element must be one of the following strings:
apq8016
apq8074
apq8084
apq8096
msm8916
msm8974
msm8992
msm8994
msm8996
mdm9615
ipq8074
sdm845
The 'board' element must be one of the following strings:
cdp
liquid
dragonboard
mtp
sbc
hk01
The 'soc_version' and 'board_version' elements take the form of v<Major>.<Minor>
where the minor number may be omitted when it's zero, i.e. v1.0 is the same
as v1. If all versions of the 'board_version' elements match, then a
wildcard '*' should be used, e.g. 'v*'.
The 'foundry_id' and 'subtype' elements are one or more digits from 0 to 9.
Examples:
"qcom,msm8916-v1-cdp-pm8916-v2.1"
A CDP board with an msm8916 SoC, version 1 paired with a pm8916 PMIC of version
2.1.
"qcom,apq8074-v2.0-2-dragonboard/1-v0.1"
A dragonboard board v0.1 of subtype 1 with an apq8074 SoC version 2, made in
foundry 2.

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/bindings/arm/qcom.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: QCOM device tree bindings
maintainers:
- Stephen Boyd <sboyd@codeaurora.org>
description: |
Some qcom based bootloaders identify the dtb blob based on a set of
device properties like SoC and platform and revisions of those components.
To support this scheme, we encode this information into the board compatible
string.
Each board must specify a top-level board compatible string with the following
format:
compatible = "qcom,<SoC>[-<soc_version>][-<foundry_id>]-<board>[/<subtype>][-<board_version>]"
The 'SoC' and 'board' elements are required. All other elements are optional.
The 'SoC' element must be one of the following strings:
apq8016
apq8074
apq8084
apq8096
msm8916
msm8974
msm8992
msm8994
msm8996
mdm9615
ipq8074
sdm845
The 'board' element must be one of the following strings:
cdp
liquid
dragonboard
mtp
sbc
hk01
The 'soc_version' and 'board_version' elements take the form of v<Major>.<Minor>
where the minor number may be omitted when it's zero, i.e. v1.0 is the same
as v1. If all versions of the 'board_version' elements match, then a
wildcard '*' should be used, e.g. 'v*'.
The 'foundry_id' and 'subtype' elements are one or more digits from 0 to 9.
Examples:
"qcom,msm8916-v1-cdp-pm8916-v2.1"
A CDP board with an msm8916 SoC, version 1 paired with a pm8916 PMIC of version
2.1.
"qcom,apq8074-v2.0-2-dragonboard/1-v0.1"
A dragonboard board v0.1 of subtype 1 with an apq8074 SoC version 2, made in
foundry 2.
properties:
compatible:
oneOf:
- items:
- enum:
- qcom,apq8016-sbc
- const: qcom,apq8016
- items:
- enum:
- qcom,apq8064-cm-qs600
- qcom,apq8064-ifc6410
- const: qcom,apq8064
- items:
- enum:
- qcom,apq8074-dragonboard
- const: qcom,apq8074
- items:
- enum:
- qcom,apq8060-dragonboard
- qcom,msm8660-surf
- const: qcom,msm8660
- items:
- enum:
- qcom,apq8084-mtp
- qcom,apq8084-sbc
- const: qcom,apq8084
- items:
- enum:
- qcom,msm8960-cdp
- const: qcom,msm8960
- items:
- const: qcom,msm8916-mtp/1
- const: qcom,msm8916-mtp
- const: qcom,msm8916
- items:
- const: qcom,msm8996-mtp
- items:
- const: qcom,ipq4019
- items:
- enum:
- qcom,ipq8064-ap148
- const: qcom,ipq8064
- items:
- enum:
- qcom,ipq8074-hk01
- const: qcom,ipq8074
...

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@ -1,11 +0,0 @@
CSR SiRFprimaII and SiRFmarco device tree bindings.
========================================
Required root node properties:
- compatible:
- "sirf,atlas6-cb" : atlas6 "cb" evaluation board
- "sirf,atlas6" : atlas6 device based board
- "sirf,atlas7-cb" : atlas7 "cb" evaluation board
- "sirf,atlas7" : atlas7 device based board
- "sirf,prima2-cb" : prima2 "cb" evaluation board
- "sirf,prima2" : prima2 device based board

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/sirf.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: CSR SiRFprimaII and SiRFmarco device tree bindings.
maintainers:
- Binghua Duan <binghua.duan@csr.com>
- Barry Song <Baohua.Song@csr.com>
properties:
$nodename:
const: '/'
compatible:
oneOf:
- items:
- const: sirf,atlas6-cb
- const: sirf,atlas6
- items:
- const: sirf,atlas7-cb
- const: sirf,atlas7
- items:
- const: sirf,prima2-cb
- const: sirf,prima2
...

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ST SPEAr Platforms Device Tree Bindings
---------------------------------------
Boards with the ST SPEAr600 SoC shall have the following properties:
Required root node property:
compatible = "st,spear600";
Boards with the ST SPEAr300 SoC shall have the following properties:
Required root node property:
compatible = "st,spear300";
Boards with the ST SPEAr310 SoC shall have the following properties:
Required root node property:
compatible = "st,spear310";
Boards with the ST SPEAr320 SoC shall have the following properties:
Required root node property:
compatible = "st,spear320";
Boards with the ST SPEAr1310 SoC shall have the following properties:
Required root node property:
compatible = "st,spear1310";
Boards with the ST SPEAr1340 SoC shall have the following properties:
Required root node property:
compatible = "st,spear1340";

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/spear.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ST SPEAr Platforms Device Tree Bindings
maintainers:
- Viresh Kumar <vireshk@kernel.org>
- Stefan Roese <sr@denx.de>
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
- st,spear600
- st,spear300
- st,spear310
- st,spear320
- st,spear1310
- st,spear1340
...

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ST STi Platforms Device Tree Bindings
---------------------------------------
Boards with the ST STiH415 SoC shall have the following properties:
Required root node property:
compatible = "st,stih415";
Boards with the ST STiH416 SoC shall have the following properties:
Required root node property:
compatible = "st,stih416";
Boards with the ST STiH407 SoC shall have the following properties:
Required root node property:
compatible = "st,stih407";
Boards with the ST STiH410 SoC shall have the following properties:
Required root node property:
compatible = "st,stih410";
Boards with the ST STiH418 SoC shall have the following properties:
Required root node property:
compatible = "st,stih418";

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/sti.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ST STi Platforms Device Tree Bindings
maintainers:
- Patrice Chotard <patrice.chotard@st.com>
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
- st,stih415
- st,stih416
- st,stih407
- st,stih410
- st,stih418
...

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NVIDIA Tegra device tree bindings
-------------------------------------------
SoCs
-------------------------------------------
Each device tree must specify which Tegra SoC it uses, using one of the
following compatible values:
nvidia,tegra20
nvidia,tegra30
nvidia,tegra114
nvidia,tegra124
nvidia,tegra132
nvidia,tegra210
nvidia,tegra186
nvidia,tegra194
Boards
-------------------------------------------
Each device tree must specify which one or more of the following
board-specific compatible values:
ad,medcom-wide
ad,plutux
ad,tamonten
ad,tec
compal,paz00
compulab,trimslice
nvidia,beaver
nvidia,cardhu
nvidia,cardhu-a02
nvidia,cardhu-a04
nvidia,dalmore
nvidia,harmony
nvidia,jetson-tk1
nvidia,norrin
nvidia,p2371-0000
nvidia,p2371-2180
nvidia,p2571
nvidia,p2771-0000
nvidia,p2972-0000
nvidia,roth
nvidia,seaboard
nvidia,tn7
nvidia,ventana
toradex,apalis_t30
toradex,apalis_t30-eval
toradex,apalis_t30-v1.1
toradex,apalis_t30-v1.1-eval
toradex,apalis-tk1
toradex,apalis-tk1-eval
toradex,apalis-tk1-v1.2
toradex,apalis-tk1-v1.2-eval
toradex,colibri_t20
toradex,colibri_t20-eval-v3
toradex,colibri_t20-iris
toradex,colibri_t30
toradex,colibri_t30-eval-v3
Trusted Foundations
-------------------------------------------
Tegra supports the Trusted Foundation secure monitor. See the
"tlm,trusted-foundations" binding's documentation for more details.

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/tegra.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NVIDIA Tegra device tree bindings
maintainers:
- Thierry Reding <thierry.reding@gmail.com>
- Jonathan Hunter <jonathanh@nvidia.com>
properties:
compatible:
oneOf:
- items:
- enum:
- compal,paz00
- compulab,trimslice
- nvidia,harmony
- nvidia,seaboard
- nvidia,ventana
- const: nvidia,tegra20
- items:
- enum:
- ad,medcom-wide
- ad,plutux
- ad,tec
- const: ad,tamonten
- const: nvidia,tegra20
- items:
- enum:
- toradex,colibri_t20-eval-v3
- toradex,colibri_t20-iris
- const: toradex,colibri_t20
- const: nvidia,tegra20
- items:
- enum:
- nvidia,beaver
- const: nvidia,tegra30
- items:
- enum:
- nvidia,cardhu-a02
- nvidia,cardhu-a04
- const: nvidia,cardhu
- const: nvidia,tegra30
- items:
- const: toradex,apalis_t30-eval
- const: toradex,apalis_t30
- const: nvidia,tegra30
- items:
- const: toradex,apalis_t30-eval-v1.1
- const: toradex,apalis_t30-eval
- const: toradex,apalis_t30-v1.1
- const: toradex,apalis_t30
- const: nvidia,tegra30
- items:
- enum:
- toradex,colibri_t30-eval-v3
- const: toradex,colibri_t30
- const: nvidia,tegra30
- items:
- enum:
- nvidia,dalmore
- nvidia,roth
- nvidia,tn7
- const: nvidia,tegra114
- items:
- enum:
- nvidia,jetson-tk1
- nvidia,venice2
- const: nvidia,tegra124
- items:
- const: toradex,apalis-tk1-eval
- const: toradex,apalis-tk1
- const: nvidia,tegra124
- items:
- const: toradex,apalis-tk1-v1.2-eval
- const: toradex,apalis-tk1-eval
- const: toradex,apalis-tk1-v1.2
- const: toradex,apalis-tk1
- const: nvidia,tegra124
- items:
- enum:
- nvidia,norrin
- const: nvidia,tegra132
- const: nvidia,tegra124
- items:
- enum:
- nvidia,p2371-0000
- nvidia,p2371-2180
- nvidia,p2571
- const: nvidia,tegra210
- items:
- enum:
- nvidia,p2771-0000
- const: nvidia,tegra186
- items:
- enum:
- nvidia,p2972-0000
- const: nvidia,tegra194

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/ti/nspire.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI-NSPIRE calculators
maintainers:
- Daniel Tang <dt.tangr@gmail.com>
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
# CX models
- ti,nspire-cx
# Touchpad models
- ti,nspire-tp
# Clickpad models
- ti,nspire-clp
...

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/ti/davinci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments DaVinci Platforms Device Tree Bindings
maintainers:
- Sekhar Nori <nsekhar@ti.com>
description:
DA850/OMAP-L138/AM18x based boards
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
- ti,da850-evm # DA850/OMAP-L138/AM18x Evaluation Module (EVM) board
- ti,da850-lcdk # DA850/OMAP-L138/AM18x L138/C6748 Development Kit (LCDK) board
- enbw,cmc # EnBW AM1808 based CMC board
- lego,ev3 # LEGO MINDSTORMS EV3 (AM1808 based)
- const: ti,da850
...

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VIA/Wondermedia VT8500 Platforms Device Tree Bindings
---------------------------------------
Boards with the VIA VT8500 SoC shall have the following properties:
Required root node property:
compatible = "via,vt8500";
Boards with the Wondermedia WM8505 SoC shall have the following properties:
Required root node property:
compatible = "wm,wm8505";
Boards with the Wondermedia WM8650 SoC shall have the following properties:
Required root node property:
compatible = "wm,wm8650";
Boards with the Wondermedia WM8750 SoC shall have the following properties:
Required root node property:
compatible = "wm,wm8750";
Boards with the Wondermedia WM8850 SoC shall have the following properties:
Required root node property:
compatible = "wm,wm8850";

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/vt8500.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: VIA/Wondermedia VT8500 Platforms Device Tree Bindings
maintainers:
- Tony Prisk <linux@prisktech.co.nz>
description: test
properties:
$nodename:
const: '/'
compatible:
items:
- enum:
- via,vt8500
- wm,wm8505
- wm,wm8650
- wm,wm8750
- wm,wm8850

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Xilinx Zynq Platforms Device Tree Bindings
Boards with Zynq-7000 SOC based on an ARM Cortex A9 processor
shall have the following properties.
Required root node properties:
- compatible = "xlnx,zynq-7000";
Additional compatible strings:
- Adapteva Parallella board
"adapteva,parallella"
- Avnet MicroZed board
"avnet,zynq-microzed"
"xlnx,zynq-microzed"
- Avnet ZedBoard board
"avnet,zynq-zed"
"xlnx,zynq-zed"
- Digilent Zybo board
"digilent,zynq-zybo"
- Digilent Zybo Z7 board
"digilent,zynq-zybo-z7"
- Xilinx CC108 internal board
"xlnx,zynq-cc108"
- Xilinx ZC702 internal board
"xlnx,zynq-zc702"
- Xilinx ZC706 internal board
"xlnx,zynq-zc706"
- Xilinx ZC770 internal board, with different FMC cards
"xlnx,zynq-zc770-xm010"
"xlnx,zynq-zc770-xm011"
"xlnx,zynq-zc770-xm012"
"xlnx,zynq-zc770-xm013"
---------------------------------------------------------------
Xilinx Zynq UltraScale+ MPSoC Platforms Device Tree Bindings
Boards with ZynqMP SOC based on an ARM Cortex A53 processor
shall have the following properties.
Required root node properties:
- compatible = "xlnx,zynqmp";
Additional compatible strings:
- Xilinx internal board zc1232
"xlnx,zynqmp-zc1232-revA", "xlnx,zynqmp-zc1232"
- Xilinx internal board zc1254
"xlnx,zynqmp-zc1254-revA", "xlnx,zynqmp-zc1254"
- Xilinx internal board zc1275
"xlnx,zynqmp-zc1275-revA", "xlnx,zynqmp-zc1275"
- Xilinx internal board zc1751
"xlnx,zynqmp-zc1751"
- Xilinx 96boards compatible board zcu100
"xlnx,zynqmp-zcu100-revC", "xlnx,zynqmp-zcu100"
- Xilinx evaluation board zcu102
"xlnx,zynqmp-zcu102-revA", "xlnx,zynqmp-zcu102"
"xlnx,zynqmp-zcu102-revB", "xlnx,zynqmp-zcu102"
"xlnx,zynqmp-zcu102-rev1.0", "xlnx,zynqmp-zcu102"
- Xilinx evaluation board zcu104
"xlnx,zynqmp-zcu104-revA", "xlnx,zynqmp-zcu104"
- Xilinx evaluation board zcu106
"xlnx,zynqmp-zcu106-revA", "xlnx,zynqmp-zcu106"
- Xilinx evaluation board zcu111
"xlnx,zynqmp-zcu111-revA", "xlnx,zynqmp-zcu111"

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/xilinx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx Zynq Platforms Device Tree Bindings
maintainers:
- Michal Simek <michal.simek@xilinx.com>
description: |
Xilinx boards with Zynq-7000 SOC or Zynq UltraScale+ MPSoC
properties:
$nodename:
const: '/'
compatible:
oneOf:
- items:
- enum:
- adapteva,parallella
- digilent,zynq-zybo
- digilent,zynq-zybo-z7
- xlnx,zynq-cc108
- xlnx,zynq-zc702
- xlnx,zynq-zc706
- xlnx,zynq-zc770-xm010
- xlnx,zynq-zc770-xm011
- xlnx,zynq-zc770-xm012
- xlnx,zynq-zc770-xm013
- const: xlnx,zynq-7000
- items:
- const: avnet,zynq-microzed
- const: xlnx,zynq-microzed
- const: xlnx,zynq-7000
- items:
- const: avnet,zynq-zed
- const: xlnx,zynq-zed
- const: xlnx,zynq-7000
- items:
- enum:
- xlnx,zynqmp-zc1751
- const: xlnx,zynqmp
- description: Xilinx internal board zc1232
items:
- const: xlnx,zynqmp-zc1232-revA
- const: xlnx,zynqmp-zc1232
- const: xlnx,zynqmp
- description: Xilinx internal board zc1254
items:
- const: xlnx,zynqmp-zc1254-revA
- const: xlnx,zynqmp-zc1254
- const: xlnx,zynqmp
- description: Xilinx internal board zc1275
items:
- const: xlnx,zynqmp-zc1275-revA
- const: xlnx,zynqmp-zc1275
- const: xlnx,zynqmp
- description: Xilinx 96boards compatible board zcu100
items:
- const: xlnx,zynqmp-zcu100-revC
- const: xlnx,zynqmp-zcu100
- const: xlnx,zynqmp
- description: Xilinx 96boards compatible board Ultra96
items:
- const: avnet,ultra96-rev1
- const: avnet,ultra96
- const: xlnx,zynqmp-zcu100-revC
- const: xlnx,zynqmp-zcu100
- const: xlnx,zynqmp
- description: Xilinx evaluation board zcu102
items:
- enum:
- xlnx,zynqmp-zcu102-revA
- xlnx,zynqmp-zcu102-revB
- xlnx,zynqmp-zcu102-rev1.0
- const: xlnx,zynqmp-zcu102
- const: xlnx,zynqmp
- description: Xilinx evaluation board zcu104
items:
- enum:
- xlnx,zynqmp-zcu104-revA
- xlnx,zynqmp-zcu104-rev1.0
- const: xlnx,zynqmp-zcu104
- const: xlnx,zynqmp
- description: Xilinx evaluation board zcu106
items:
- enum:
- xlnx,zynqmp-zcu106-revA
- xlnx,zynqmp-zcu106-rev1.0
- const: xlnx,zynqmp-zcu106
- const: xlnx,zynqmp
- description: Xilinx evaluation board zcu111
items:
- enum:
- xlnx,zynqmp-zcu111-revA
- xlnx,zynqmp-zcu11-rev1.0
- const: xlnx,zynqmp-zcu111
- const: xlnx,zynqmp
...

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@ -1,14 +0,0 @@
ZTE platforms device tree bindings
---------------------------------------
- ZX296702 board:
Required root node properties:
- compatible = "zte,zx296702-ad1", "zte,zx296702"
---------------------------------------
- ZX296718 SoC:
Required root node properties:
- compatible = "zte,zx296718"
ZX296718 EVB board:
- "zte,zx296718-evb"

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/zte.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ZTE platforms device tree bindings
maintainers:
- Jun Nie <jun.nie@linaro.org>
properties:
$nodename:
const: '/'
compatible:
oneOf:
- items:
- enum:
- zte,zx296702-ad1
- const: zte,zx296702
- items:
- enum:
- zte,zx296718-evb
- const: zte,zx296718
...

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2018 Linaro Ltd.
%YAML 1.2
---
# All the top-level keys are standard json-schema keywords except for
# 'maintainers' and 'select'
# $id is a unique idenifier based on the filename. There may or may not be a
# file present at the URL.
$id: "http://devicetree.org/schemas/example-schema.yaml#"
# $schema is the meta-schema this schema should be validated with.
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: An example schema annotated with jsonschema details
maintainers:
- Rob Herring <robh@kernel.org>
description: |
A more detailed multi-line description of the binding.
Details about the hardware device and any links to datasheets can go here.
Literal blocks are marked with the '|' at the beginning. The end is marked by
indentation less than the first line of the literal block. Lines also cannot
begin with a tab character.
select: false
# 'select' is a schema applied to a DT node to determine if this binding
# schema should be applied to the node. It is optional and by default the
# possible compatible strings are extracted and used to match.
# In this case, a 'false' schema will never match.
properties:
# A dictionary of DT properties for this binding schema
compatible:
# More complicated schema can use oneOf (XOR), anyOf (OR), or allOf (AND)
# to handle different conditions.
# In this case, it's needed to handle a variable number of values as there
# isn't another way to express a constraint of the last string value.
# The boolean schema must be a list of schemas.
oneOf:
- items:
# items is a list of possible values for the property. The number of
# values is determined by the number of elements in the list.
# Order in lists is significant, order in dicts is not
# Must be one of the 1st enums followed by the 2nd enum
#
# Each element in items should be 'enum' or 'const'
- enum:
- vendor,soc4-ip
- vendor,soc3-ip
- vendor,soc2-ip
- enum:
- vendor,soc1-ip
# additionalItems being false is implied
# minItems/maxItems equal to 2 is implied
- items:
# 'const' is just a special case of an enum with a single possible value
- const: vendor,soc1-ip
reg:
# The core schema already checks that reg values are numbers, so device
# specific schema don't need to do those checks.
# The description of each element defines the order and implicitly defines
# the number of reg entries.
items:
- description: core registers
- description: aux registers
# minItems/maxItems equal to 2 is implied
reg-names:
# The core schema enforces this is a string array
items:
- const: core
- const: aux
clocks:
# Cases that have only a single entry just need to express that with maxItems
maxItems: 1
description: bus clock
clock-names:
items:
- const: bus
interrupts:
# Either 1 or 2 interrupts can be present
minItems: 1
maxItems: 2
items:
- description: tx or combined interrupt
- description: rx interrupt
description:
A variable number of interrupts warrants a description of what conditions
affect the number of interrupts. Otherwise, descriptions on standard
properties are not necessary.
interrupt-names:
# minItems must be specified here because the default would be 2
minItems: 1
maxItems: 2
items:
- const: tx irq
- const: rx irq
# Property names starting with '#' must be quoted
'#interrupt-cells':
# A simple case where the value must always be '2'.
# The core schema handles that this must be a single integer.
const: 2
interrupt-controller: true
# The core checks this is a boolean, so just have to list it here to be
# valid for this binding.
clock-frequency:
# The type is set in the core schema. Per device schema only need to set
# constraints on the possible values.
minimum: 100
maximum: 400000
# The value that should be used if the property is not present
default: 200
foo-gpios:
maxItems: 1
description: A connection of the 'foo' gpio line.
vendor,int-property:
description: Vendor specific properties must have a description
# 'allOf' is the json-schema way of subclassing a schema. Here the base
# type schema is referenced and then additional constraints on the values
# are added.
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32
- enum: [2, 4, 6, 8, 10]
vendor,bool-property:
description: Vendor specific properties must have a description
# boolean properties is one case where the json-schema 'type' keyword
# can be used directly
type: boolean
vendor,string-array-property:
description: Vendor specific properties should reference a type in the
core schema.
allOf:
- $ref: /schemas/types.yaml#/definitions/string-array
- items:
- enum: [ foo, bar ]
- enum: [ baz, boo ]
required:
- compatible
- reg
- interrupts
- interrupt-controller
examples:
# Examples are now compiled with dtc
- |
node@1000 {
compatible = "vendor,soc4-ip", "vendor,soc1-ip";
reg = <0x1000 0x80>,
<0x3000 0x80>;
reg-names = "core", "aux";
interrupts = <10>;
interrupt-controller;
};

10
Documentation/devicetree/bindings/gpio/gpio-omap.txt
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@ -5,6 +5,8 @@ Required properties:
- "ti,omap2-gpio" for OMAP2 controllers
- "ti,omap3-gpio" for OMAP3 controllers
- "ti,omap4-gpio" for OMAP4 controllers
- reg : Physical base address of the controller and length of memory mapped
region.
- gpio-controller : Marks the device node as a GPIO controller.
- #gpio-cells : Should be two.
- first cell is the pin number
@ -18,6 +20,8 @@ Required properties:
2 = high-to-low edge triggered.
4 = active high level-sensitive.
8 = active low level-sensitive.
- interrupts : The interrupt the controller is rising as output when an
interrupt occures
OMAP specific properties:
- ti,hwmods: Name of the hwmod associated to the GPIO:
@ -29,11 +33,13 @@ OMAP specific properties:
Example:
gpio4: gpio4 {
gpio0: gpio@44e07000 {
compatible = "ti,omap4-gpio";
ti,hwmods = "gpio4";
reg = <0x44e07000 0x1000>;
ti,hwmods = "gpio1";
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <96>;
};

46
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@ -1,46 +0,0 @@
Device-Tree bindings for i2c gpio driver
Required properties:
- compatible = "i2c-gpio";
- sda-gpios: gpio used for the sda signal, this should be flagged as
active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
from <dt-bindings/gpio/gpio.h> since the signal is by definition
open drain.
- scl-gpios: gpio used for the scl signal, this should be flagged as
active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
from <dt-bindings/gpio/gpio.h> since the signal is by definition
open drain.
Optional properties:
- i2c-gpio,scl-output-only: scl as output only
- i2c-gpio,delay-us: delay between GPIO operations (may depend on each platform)
- i2c-gpio,timeout-ms: timeout to get data
Deprecated properties, do not use in new device tree sources:
- gpios: sda and scl gpio, alternative for {sda,scl}-gpios
- i2c-gpio,sda-open-drain: this means that something outside of our
control has put the GPIO line used for SDA into open drain mode, and
that something is not the GPIO chip. It is essentially an
inconsistency flag.
- i2c-gpio,scl-open-drain: this means that something outside of our
control has put the GPIO line used for SCL into open drain mode, and
that something is not the GPIO chip. It is essentially an
inconsistency flag.
Example nodes:
#include <dt-bindings/gpio/gpio.h>
i2c@0 {
compatible = "i2c-gpio";
sda-gpios = <&pioA 23 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
scl-gpios = <&pioA 24 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
i2c-gpio,delay-us = <2>; /* ~100 kHz */
#address-cells = <1>;
#size-cells = <0>;
rv3029c2@56 {
compatible = "rv3029c2";
reg = <0x56>;
};
};

73
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/i2c/i2c-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Bindings for GPIO bitbanged I2C
maintainers:
- Wolfram Sang <wolfram@the-dreams.de>
allOf:
- $ref: /schemas/i2c/i2c-controller.yaml#
properties:
compatible:
items:
- const: i2c-gpio
sda-gpios:
description:
gpio used for the sda signal, this should be flagged as
active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
from <dt-bindings/gpio/gpio.h> since the signal is by definition
open drain.
maxItems: 1
scl-gpios:
description:
gpio used for the scl signal, this should be flagged as
active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
from <dt-bindings/gpio/gpio.h> since the signal is by definition
open drain.
maxItems: 1
i2c-gpio,scl-output-only:
description: scl as output only
type: boolean
i2c-gpio,delay-us:
description: delay between GPIO operations (may depend on each platform)
$ref: /schemas/types.yaml#/definitions/uint32
i2c-gpio,timeout-ms:
description: timeout to get data
$ref: /schemas/types.yaml#/definitions/uint32
# Deprecated properties, do not use in new device tree sources:
gpios:
minItems: 2
maxItems: 2
description: sda and scl gpio, alternative for {sda,scl}-gpios
i2c-gpio,sda-open-drain:
# Generate a warning if present
not: true
description: this means that something outside of our control has put
the GPIO line used for SDA into open drain mode, and that something is
not the GPIO chip. It is essentially an inconsistency flag.
i2c-gpio,scl-open-drain:
# Generate a warning if present
not: true
description: this means that something outside of our control has put the
GPIO line used for SCL into open drain mode, and that something is not
the GPIO chip. It is essentially an inconsistency flag.
required:
- compatible
- sda-gpios
- scl-gpios
...

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* FREESCALE MAG3110 magnetometer sensor
Required properties:
- compatible : should be "fsl,mag3110"
- reg : the I2C address of the magnetometer
Optional properties:
- interrupts: the sole interrupt generated by the device
Refer to interrupt-controller/interrupts.txt for generic interrupt client
node bindings.
- vdd-supply: phandle to the regulator that provides power to the sensor.
- vddio-supply: phandle to the regulator that provides power to the sensor's IO.
Example:
magnetometer@e {
compatible = "fsl,mag3110";
reg = <0x0e>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c3_mag3110_int>;
interrupt-parent = <&gpio3>;
interrupts = <16 IRQ_TYPE_EDGE_RISING>;
};

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@ -5,7 +5,7 @@ Required properties:
"mrvl,mmp2-mux-intc"
- reg : Address and length of the register set of the interrupt controller.
If the interrupt controller is intc, address and length means the range
of the whold interrupt controller. If the interrupt controller is mux-intc,
of the whole interrupt controller. If the interrupt controller is mux-intc,
address and length means one register. Since address of mux-intc is in the
range of intc. mux-intc is secondary interrupt controller.
- reg-names : Name of the register set of the interrupt controller. It's

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Cadence Sierra PHY
-----------------------
Required properties:
- compatible: cdns,sierra-phy-t0
- clocks: Must contain an entry in clock-names.
See ../clocks/clock-bindings.txt for details.
- clock-names: Must be "phy_clk"
- resets: Must contain an entry for each in reset-names.
See ../reset/reset.txt for details.
- reset-names: Must include "sierra_reset" and "sierra_apb".
"sierra_reset" must control the reset line to the PHY.
"sierra_apb" must control the reset line to the APB PHY
interface.
- reg: register range for the PHY.
- #address-cells: Must be 1
- #size-cells: Must be 0
Optional properties:
- cdns,autoconf: A boolean property whose presence indicates that the
PHY registers will be configured by hardware. If not
present, all sub-node optional properties must be
provided.
Sub-nodes:
Each group of PHY lanes with a single master lane should be represented as
a sub-node. Note that the actual configuration of each lane is determined by
hardware strapping, and must match the configuration specified here.
Sub-node required properties:
- #phy-cells: Generic PHY binding; must be 0.
- reg: The master lane number. This is the lowest numbered lane
in the lane group.
- resets: Must contain one entry which controls the reset line for the
master lane of the sub-node.
See ../reset/reset.txt for details.
Sub-node optional properties:
- cdns,num-lanes: Number of lanes in this group. From 1 to 4. The
group is made up of consecutive lanes.
- cdns,phy-type: Can be PHY_TYPE_PCIE or PHY_TYPE_USB3, depending on
configuration of lanes.
Example:
pcie_phy4: pcie-phy@fd240000 {
compatible = "cdns,sierra-phy-t0";
reg = <0x0 0xfd240000 0x0 0x40000>;
resets = <&phyrst 0>, <&phyrst 1>;
reset-names = "sierra_reset", "sierra_apb";
clocks = <&phyclock>;
clock-names = "phy_clk";
#address-cells = <1>;
#size-cells = <0>;
pcie0_phy0: pcie-phy@0 {
reg = <0>;
resets = <&phyrst 2>;
cdns,num-lanes = <2>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
};
pcie0_phy1: pcie-phy@2 {
reg = <2>;
resets = <&phyrst 4>;
cdns,num-lanes = <1>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
};

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* Xen hypervisor reserved-memory binding
Expose one or more memory regions as reserved-memory to the guest
virtual machine. Typically, a region is configured at VM creation time
to be a shared memory area across multiple virtual machines for
communication among them.
For each of these pre-shared memory regions, a range is exposed under
the /reserved-memory node as a child node. Each range sub-node is named
xen-shmem@<address> and has the following properties:
- compatible:
compatible = "xen,shared-memory-v1"
- reg:
the base guest physical address and size of the shared memory region
- xen,offset: (borrower VMs only)
64 bit integer offset within the owner virtual machine's shared
memory region used for the mapping in the borrower VM.
- xen,id:
a string that identifies the shared memory region as specified in
the VM config file

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Device-Tree bindings for Mediatek random number generator
found in Mediatek SoC family
found in MediaTek SoC family
Required properties:
- compatible : Should be
"mediatek,mt7622-rng", "mediatek,mt7623-rng" : for MT7622
"mediatek,mt7629-rng", "mediatek,mt7623-rng" : for MT7629
"mediatek,mt7623-rng" : for MT7623
- clocks : list of clock specifiers, corresponding to
entries in clock-names property;

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Generic device tree bindings for Real Time Clock devices
========================================================
This document describes generic bindings which can be used to describe Real Time
Clock devices in a device tree.
Required properties
-------------------
- compatible : name of RTC device following generic names recommended practice.
For other required properties e.g. to describe register sets,
clocks, etc. check the binding documentation of the specific driver.
Optional properties
-------------------
- start-year : if provided, the default hardware range supported by the RTC is
shifted so the first usable year is the specified one.
The following properties may not be supported by all drivers. However, if a
driver wants to support one of the below features, it should adapt the bindings
below.
- trickle-resistor-ohms : Selected resistor for trickle charger. Should be given
if trickle charger should be enabled
- trickle-diode-disable : Do not use internal trickle charger diode Should be
given if internal trickle charger diode should be
disabled
- wakeup-source : Enables wake up of host system on alarm
Trivial RTCs
------------
This is a list of trivial RTC devices that have simple device tree
bindings, consisting only of a compatible field, an address and
possibly an interrupt line.
Compatible Vendor / Chip
========== =============
abracon,abb5zes3 AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
dallas,ds1374 I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
dallas,ds1672 Dallas DS1672 Real-time Clock
dallas,ds3232 Extremely Accurate I²C RTC with Integrated Crystal and SRAM
epson,rx8010 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
epson,rx8581 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
emmicro,em3027 EM Microelectronic EM3027 Real-time Clock
isil,isl1208 Intersil ISL1208 Low Power RTC with Battery Backed SRAM
isil,isl1218 Intersil ISL1218 Low Power RTC with Battery Backed SRAM
isil,isl12022 Intersil ISL12022 Real-time Clock
microcrystal,rv3029 Real Time Clock Module with I2C-Bus
nxp,pcf2127 Real-time clock
nxp,pcf2129 Real-time clock
nxp,pcf8523 Real-time Clock
nxp,pcf8563 Real-time clock/calendar
nxp,pcf85063 Tiny Real-Time Clock
pericom,pt7c4338 Real-time Clock Module
ricoh,r2025sd I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,r2221tl I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rs5c372a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rs5c372b I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c386 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c387a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
sii,s35390a 2-wire CMOS real-time clock

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* ARM architected timer
ARM cores may have a per-core architected timer, which provides per-cpu timers,
or a memory mapped architected timer, which provides up to 8 frames with a
physical and optional virtual timer per frame.
The per-core architected timer is attached to a GIC to deliver its
per-processor interrupts via PPIs. The memory mapped timer is attached to a GIC
to deliver its interrupts via SPIs.
** CP15 Timer node properties:
- compatible : Should at least contain one of
"arm,armv7-timer"
"arm,armv8-timer"
- interrupts : Interrupt list for secure, non-secure, virtual and
hypervisor timers, in that order.
- clock-frequency : The frequency of the main counter, in Hz. Should be present
only where necessary to work around broken firmware which does not configure
CNTFRQ on all CPUs to a uniform correct value. Use of this property is
strongly discouraged; fix your firmware unless absolutely impossible.
- always-on : a boolean property. If present, the timer is powered through an
always-on power domain, therefore it never loses context.
- fsl,erratum-a008585 : A boolean property. Indicates the presence of
QorIQ erratum A-008585, which says that reading the counter is
unreliable unless the same value is returned by back-to-back reads.
This also affects writes to the tval register, due to the implicit
counter read.
- hisilicon,erratum-161010101 : A boolean property. Indicates the
presence of Hisilicon erratum 161010101, which says that reading the
counters is unreliable in some cases, and reads may return a value 32
beyond the correct value. This also affects writes to the tval
registers, due to the implicit counter read.
** Optional properties:
- arm,cpu-registers-not-fw-configured : Firmware does not initialize
any of the generic timer CPU registers, which contain their
architecturally-defined reset values. Only supported for 32-bit
systems which follow the ARMv7 architected reset values.
- arm,no-tick-in-suspend : The main counter does not tick when the system is in
low-power system suspend on some SoCs. This behavior does not match the
Architecture Reference Manual's specification that the system counter "must
be implemented in an always-on power domain."
Example:
timer {
compatible = "arm,cortex-a15-timer",
"arm,armv7-timer";
interrupts = <1 13 0xf08>,
<1 14 0xf08>,
<1 11 0xf08>,
<1 10 0xf08>;
clock-frequency = <100000000>;
};
** Memory mapped timer node properties:
- compatible : Should at least contain "arm,armv7-timer-mem".
- clock-frequency : The frequency of the main counter, in Hz. Should be present
only when firmware has not configured the MMIO CNTFRQ registers.
- reg : The control frame base address.
Note that #address-cells, #size-cells, and ranges shall be present to ensure
the CPU can address a frame's registers.
A timer node has up to 8 frame sub-nodes, each with the following properties:
- frame-number: 0 to 7.
- interrupts : Interrupt list for physical and virtual timers in that order.
The virtual timer interrupt is optional.
- reg : The first and second view base addresses in that order. The second view
base address is optional.
- status : "disabled" indicates the frame is not available for use. Optional.
Example:
timer@f0000000 {
compatible = "arm,armv7-timer-mem";
#address-cells = <1>;
#size-cells = <1>;
ranges;
reg = <0xf0000000 0x1000>;
clock-frequency = <50000000>;
frame@f0001000 {
frame-number = <0>
interrupts = <0 13 0x8>,
<0 14 0x8>;
reg = <0xf0001000 0x1000>,
<0xf0002000 0x1000>;
};
frame@f0003000 {
frame-number = <1>
interrupts = <0 15 0x8>;
reg = <0xf0003000 0x1000>;
};
};

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/arm,arch_timer.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM architected timer
maintainers:
- Marc Zyngier <marc.zyngier@arm.com>
- Mark Rutland <mark.rutland@arm.com>
description: |+
ARM cores may have a per-core architected timer, which provides per-cpu timers,
or a memory mapped architected timer, which provides up to 8 frames with a
physical and optional virtual timer per frame.
The per-core architected timer is attached to a GIC to deliver its
per-processor interrupts via PPIs. The memory mapped timer is attached to a GIC
to deliver its interrupts via SPIs.
properties:
compatible:
oneOf:
- items:
- enum:
- arm,cortex-a15-timer
- enum:
- arm,armv7-timer
- items:
- enum:
- arm,armv7-timer
- items:
- enum:
- arm,armv8-timer
interrupts:
items:
- description: secure timer irq
- description: non-secure timer irq
- description: virtual timer irq
- description: hypervisor timer irq
clock-frequency:
description: The frequency of the main counter, in Hz. Should be present
only where necessary to work around broken firmware which does not configure
CNTFRQ on all CPUs to a uniform correct value. Use of this property is
strongly discouraged; fix your firmware unless absolutely impossible.
always-on:
type: boolean
description: If present, the timer is powered through an always-on power
domain, therefore it never loses context.
fsl,erratum-a008585:
type: boolean
description: Indicates the presence of QorIQ erratum A-008585, which says
that reading the counter is unreliable unless the same value is returned
by back-to-back reads. This also affects writes to the tval register, due
to the implicit counter read.
hisilicon,erratum-161010101:
type: boolean
description: Indicates the presence of Hisilicon erratum 161010101, which
says that reading the counters is unreliable in some cases, and reads may
return a value 32 beyond the correct value. This also affects writes to
the tval registers, due to the implicit counter read.
arm,cpu-registers-not-fw-configured:
type: boolean
description: Firmware does not initialize any of the generic timer CPU
registers, which contain their architecturally-defined reset values. Only
supported for 32-bit systems which follow the ARMv7 architected reset
values.
arm,no-tick-in-suspend:
type: boolean
description: The main counter does not tick when the system is in
low-power system suspend on some SoCs. This behavior does not match the
Architecture Reference Manual's specification that the system counter "must
be implemented in an always-on power domain."
required:
- compatible
oneOf:
- required:
- interrupts
- required:
- interrupts-extended
examples:
- |
timer {
compatible = "arm,cortex-a15-timer",
"arm,armv7-timer";
interrupts = <1 13 0xf08>,
<1 14 0xf08>,
<1 11 0xf08>,
<1 10 0xf08>;
clock-frequency = <100000000>;
};
...

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/arm,arch_timer_mmio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM memory mapped architected timer
maintainers:
- Marc Zyngier <marc.zyngier@arm.com>
- Mark Rutland <mark.rutland@arm.com>
description: |+
ARM cores may have a memory mapped architected timer, which provides up to 8
frames with a physical and optional virtual timer per frame.
The memory mapped timer is attached to a GIC to deliver its interrupts via SPIs.
properties:
compatible:
items:
- enum:
- arm,armv7-timer-mem
reg:
maxItems: 1
description: The control frame base address
'#address-cells':
enum: [1, 2]
'#size-cells':
const: 1
clock-frequency:
description: The frequency of the main counter, in Hz. Should be present
only where necessary to work around broken firmware which does not configure
CNTFRQ on all CPUs to a uniform correct value. Use of this property is
strongly discouraged; fix your firmware unless absolutely impossible.
always-on:
type: boolean
description: If present, the timer is powered through an always-on power
domain, therefore it never loses context.
arm,cpu-registers-not-fw-configured:
type: boolean
description: Firmware does not initialize any of the generic timer CPU
registers, which contain their architecturally-defined reset values. Only
supported for 32-bit systems which follow the ARMv7 architected reset
values.
arm,no-tick-in-suspend:
type: boolean
description: The main counter does not tick when the system is in
low-power system suspend on some SoCs. This behavior does not match the
Architecture Reference Manual's specification that the system counter "must
be implemented in an always-on power domain."
patternProperties:
'^frame@[0-9a-z]*$':
description: A timer node has up to 8 frame sub-nodes, each with the following properties.
properties:
frame-number:
allOf:
- $ref: "/schemas/types.yaml#/definitions/uint32"
- minimum: 0
maximum: 7
interrupts:
minItems: 1
maxItems: 2
items:
- description: physical timer irq
- description: virtual timer irq
reg :
minItems: 1
maxItems: 2
items:
- description: 1st view base address
- description: 2nd optional view base address
required:
- frame-number
- interrupts
- reg
required:
- compatible
- reg
- '#address-cells'
- '#size-cells'
examples:
- |
timer@f0000000 {
compatible = "arm,armv7-timer-mem";
#address-cells = <1>;
#size-cells = <1>;
ranges;
reg = <0xf0000000 0x1000>;
clock-frequency = <50000000>;
frame@f0001000 {
frame-number = <0>;
interrupts = <0 13 0x8>,
<0 14 0x8>;
reg = <0xf0001000 0x1000>,
<0xf0002000 0x1000>;
};
frame@f0003000 {
frame-number = <1>;
interrupts = <0 15 0x8>;
reg = <0xf0003000 0x1000>;
};
};
...

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* ARM Global Timer
Cortex-A9 are often associated with a per-core Global timer.
** Timer node required properties:
- compatible : should contain
* "arm,cortex-a5-global-timer" for Cortex-A5 global timers.
* "arm,cortex-a9-global-timer" for Cortex-A9 global
timers or any compatible implementation. Note: driver
supports versions r2p0 and above.
- interrupts : One interrupt to each core
- reg : Specify the base address and the size of the GT timer
register window.
- clocks : Should be phandle to a clock.
Example:
timer@2c000600 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x2c000600 0x20>;
interrupts = <1 13 0xf01>;
clocks = <&arm_periph_clk>;
};

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/timer/arm,global_timer.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARM Global Timer
maintainers:
- Stuart Menefy <stuart.menefy@st.com>
description:
Cortex-A9 are often associated with a per-core Global timer.
properties:
compatible:
items:
- enum:
- arm,cortex-a5-global-timer
- arm,cortex-a9-global-timer
description: driver supports versions r2p0 and above.
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
required:
- compatible
- reg
- clocks
examples:
- |
timer@2c000600 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x2c000600 0x20>;
interrupts = <1 13 0xf01>;
clocks = <&arm_periph_clk>;
};
...

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This is a list of trivial i2c devices that have simple device tree
bindings, consisting only of a compatible field, an address and
possibly an interrupt line.
If a device needs more specific bindings, such as properties to
describe some aspect of it, there needs to be a specific binding
document for it just like any other devices.
Compatible Vendor / Chip
========== =============
abracon,abb5zes3 AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
ad,ad7414 SMBus/I2C Digital Temperature Sensor in 6-Pin SOT with SMBus Alert and Over Temperature Pin
ad,adm9240 ADM9240: Complete System Hardware Monitor for uProcessor-Based Systems
adi,adt7461 +/-1C TDM Extended Temp Range I.C
adt7461 +/-1C TDM Extended Temp Range I.C
adi,adt7473 +/-1C TDM Extended Temp Range I.C
adi,adt7475 +/-1C TDM Extended Temp Range I.C
adi,adt7476 +/-1C TDM Extended Temp Range I.C
adi,adt7490 +/-1C TDM Extended Temp Range I.C
adi,adxl345 Three-Axis Digital Accelerometer
adi,adxl346 Three-Axis Digital Accelerometer (backward-compatibility value "adi,adxl345" must be listed too)
ams,iaq-core AMS iAQ-Core VOC Sensor
at,24c08 i2c serial eeprom (24cxx)
atmel,at97sc3204t i2c trusted platform module (TPM)
capella,cm32181 CM32181: Ambient Light Sensor
capella,cm3232 CM3232: Ambient Light Sensor
dallas,ds1374 I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output
dallas,ds1631 High-Precision Digital Thermometer
dallas,ds1672 Dallas DS1672 Real-time Clock
dallas,ds1682 Total-Elapsed-Time Recorder with Alarm
dallas,ds1775 Tiny Digital Thermometer and Thermostat
dallas,ds3232 Extremely Accurate I²C RTC with Integrated Crystal and SRAM
dallas,ds4510 CPU Supervisor with Nonvolatile Memory and Programmable I/O
dallas,ds75 Digital Thermometer and Thermostat
devantech,srf02 Devantech SRF02 ultrasonic ranger in I2C mode
devantech,srf08 Devantech SRF08 ultrasonic ranger
devantech,srf10 Devantech SRF10 ultrasonic ranger
dlg,da9053 DA9053: flexible system level PMIC with multicore support
dlg,da9063 DA9063: system PMIC for quad-core application processors
domintech,dmard09 DMARD09: 3-axis Accelerometer
domintech,dmard10 DMARD10: 3-axis Accelerometer
epson,rx8010 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
epson,rx8581 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
emmicro,em3027 EM Microelectronic EM3027 Real-time Clock
fsl,mag3110 MAG3110: Xtrinsic High Accuracy, 3D Magnetometer
fsl,mma7660 MMA7660FC: 3-Axis Orientation/Motion Detection Sensor
fsl,mma8450 MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer
fsl,mpl3115 MPL3115: Absolute Digital Pressure Sensor
fsl,mpr121 MPR121: Proximity Capacitive Touch Sensor Controller
fsl,sgtl5000 SGTL5000: Ultra Low-Power Audio Codec
gmt,g751 G751: Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
infineon,slb9635tt Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
infineon,slb9645tt Infineon SLB9645 I2C TPM (new protocol, max 400khz)
infineon,tlv493d-a1b6 Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
isil,isl1208 Intersil ISL1208 Low Power RTC with Battery Backed SRAM
isil,isl1218 Intersil ISL1218 Low Power RTC with Battery Backed SRAM
isil,isl12022 Intersil ISL12022 Real-time Clock
isil,isl29028 Intersil ISL29028 Ambient Light and Proximity Sensor
isil,isl29030 Intersil ISL29030 Ambient Light and Proximity Sensor
maxim,ds1050 5 Bit Programmable, Pulse-Width Modulator
maxim,max1237 Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
maxim,max6621 PECI-to-I2C translator for PECI-to-SMBus/I2C protocol conversion
maxim,max6625 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface
mcube,mc3230 mCube 3-axis 8-bit digital accelerometer
memsic,mxc6225 MEMSIC 2-axis 8-bit digital accelerometer
microchip,mcp4017-502 Microchip 7-bit Single I2C Digital POT (5k)
microchip,mcp4017-103 Microchip 7-bit Single I2C Digital POT (10k)
microchip,mcp4017-503 Microchip 7-bit Single I2C Digital POT (50k)
microchip,mcp4017-104 Microchip 7-bit Single I2C Digital POT (100k)
microchip,mcp4018-502 Microchip 7-bit Single I2C Digital POT (5k)
microchip,mcp4018-103 Microchip 7-bit Single I2C Digital POT (10k)
microchip,mcp4018-503 Microchip 7-bit Single I2C Digital POT (50k)
microchip,mcp4018-104 Microchip 7-bit Single I2C Digital POT (100k)
microchip,mcp4019-502 Microchip 7-bit Single I2C Digital POT (5k)
microchip,mcp4019-103 Microchip 7-bit Single I2C Digital POT (10k)
microchip,mcp4019-503 Microchip 7-bit Single I2C Digital POT (50k)
microchip,mcp4019-104 Microchip 7-bit Single I2C Digital POT (100k)
microchip,mcp4531-502 Microchip 7-bit Single I2C Digital Potentiometer (5k)
microchip,mcp4531-103 Microchip 7-bit Single I2C Digital Potentiometer (10k)
microchip,mcp4531-503 Microchip 7-bit Single I2C Digital Potentiometer (50k)
microchip,mcp4531-104 Microchip 7-bit Single I2C Digital Potentiometer (100k)
microchip,mcp4532-502 Microchip 7-bit Single I2C Digital Potentiometer (5k)
microchip,mcp4532-103 Microchip 7-bit Single I2C Digital Potentiometer (10k)
microchip,mcp4532-503 Microchip 7-bit Single I2C Digital Potentiometer (50k)
microchip,mcp4532-104 Microchip 7-bit Single I2C Digital Potentiometer (100k)
microchip,mcp4541-502 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4541-103 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4541-503 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4541-104 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4542-502 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4542-103 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4542-503 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4542-104 Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4551-502 Microchip 8-bit Single I2C Digital Potentiometer (5k)
microchip,mcp4551-103 Microchip 8-bit Single I2C Digital Potentiometer (10k)
microchip,mcp4551-503 Microchip 8-bit Single I2C Digital Potentiometer (50k)
microchip,mcp4551-104 Microchip 8-bit Single I2C Digital Potentiometer (100k)
microchip,mcp4552-502 Microchip 8-bit Single I2C Digital Potentiometer (5k)
microchip,mcp4552-103 Microchip 8-bit Single I2C Digital Potentiometer (10k)
microchip,mcp4552-503 Microchip 8-bit Single I2C Digital Potentiometer (50k)
microchip,mcp4552-104 Microchip 8-bit Single I2C Digital Potentiometer (100k)
microchip,mcp4561-502 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4561-103 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4561-503 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4561-104 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4562-502 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4562-103 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4562-503 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4562-104 Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4631-502 Microchip 7-bit Dual I2C Digital Potentiometer (5k)
microchip,mcp4631-103 Microchip 7-bit Dual I2C Digital Potentiometer (10k)
microchip,mcp4631-503 Microchip 7-bit Dual I2C Digital Potentiometer (50k)
microchip,mcp4631-104 Microchip 7-bit Dual I2C Digital Potentiometer (100k)
microchip,mcp4632-502 Microchip 7-bit Dual I2C Digital Potentiometer (5k)
microchip,mcp4632-103 Microchip 7-bit Dual I2C Digital Potentiometer (10k)
microchip,mcp4632-503 Microchip 7-bit Dual I2C Digital Potentiometer (50k)
microchip,mcp4632-104 Microchip 7-bit Dual I2C Digital Potentiometer (100k)
microchip,mcp4641-502 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4641-103 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4641-503 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4641-104 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4642-502 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4642-103 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4642-503 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4642-104 Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4651-502 Microchip 8-bit Dual I2C Digital Potentiometer (5k)
microchip,mcp4651-103 Microchip 8-bit Dual I2C Digital Potentiometer (10k)
microchip,mcp4651-503 Microchip 8-bit Dual I2C Digital Potentiometer (50k)
microchip,mcp4651-104 Microchip 8-bit Dual I2C Digital Potentiometer (100k)
microchip,mcp4652-502 Microchip 8-bit Dual I2C Digital Potentiometer (5k)
microchip,mcp4652-103 Microchip 8-bit Dual I2C Digital Potentiometer (10k)
microchip,mcp4652-503 Microchip 8-bit Dual I2C Digital Potentiometer (50k)
microchip,mcp4652-104 Microchip 8-bit Dual I2C Digital Potentiometer (100k)
microchip,mcp4661-502 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4661-103 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4661-503 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4661-104 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
microchip,mcp4662-502 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
microchip,mcp4662-103 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
microchip,mcp4662-503 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
microchip,mcp4662-104 Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
microchip,tc654 PWM Fan Speed Controller With Fan Fault Detection
microchip,tc655 PWM Fan Speed Controller With Fan Fault Detection
microcrystal,rv3029 Real Time Clock Module with I2C-Bus
miramems,da226 MiraMEMS DA226 2-axis 14-bit digital accelerometer
miramems,da280 MiraMEMS DA280 3-axis 14-bit digital accelerometer
miramems,da311 MiraMEMS DA311 3-axis 12-bit digital accelerometer
national,lm63 Temperature sensor with integrated fan control
national,lm75 I2C TEMP SENSOR
national,lm80 Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
national,lm85 Temperature sensor with integrated fan control
national,lm92 ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
nuvoton,npct501 i2c trusted platform module (TPM)
nuvoton,npct601 i2c trusted platform module (TPM2)
nuvoton,w83773g Nuvoton Temperature Sensor
nxp,pca9556 Octal SMBus and I2C registered interface
nxp,pca9557 8-bit I2C-bus and SMBus I/O port with reset
nxp,pcf2127 Real-time clock
nxp,pcf2129 Real-time clock
nxp,pcf8523 Real-time Clock
nxp,pcf8563 Real-time clock/calendar
nxp,pcf85063 Tiny Real-Time Clock
oki,ml86v7667 OKI ML86V7667 video decoder
ovti,ov5642 OV5642: Color CMOS QSXGA (5-megapixel) Image Sensor with OmniBSI and Embedded TrueFocus
pericom,pt7c4338 Real-time Clock Module
plx,pex8648 48-Lane, 12-Port PCI Express Gen 2 (5.0 GT/s) Switch
pulsedlight,lidar-lite-v2 Pulsedlight LIDAR range-finding sensor
ricoh,r2025sd I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,r2221tl I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rs5c372a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rs5c372b I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c386 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c387a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
samsung,24ad0xd1 S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
sgx,vz89x SGX Sensortech VZ89X Sensors
sii,s35390a 2-wire CMOS real-time clock
silabs,si7020 Relative Humidity and Temperature Sensors
skyworks,sky81452 Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply
st,24c256 i2c serial eeprom (24cxx)
taos,tsl2550 Ambient Light Sensor with SMBUS/Two Wire Serial Interface
ti,ads7828 8-Channels, 12-bit ADC
ti,ads7830 8-Channels, 8-bit ADC
ti,amc6821 Temperature Monitoring and Fan Control
ti,tsc2003 I2C Touch-Screen Controller
ti,tmp102 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface
ti,tmp103 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface
ti,tmp275 Digital Temperature Sensor
winbond,w83793 Winbond/Nuvoton H/W Monitor
winbond,wpct301 i2c trusted platform module (TPM)

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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/trivial-devices.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Trivial I2C and SPI devices that have simple device tree bindings
maintainers:
- Rob Herring <robh@kernel.org>
description: |
This is a list of trivial I2C and SPI devices that have simple device tree
bindings, consisting only of a compatible field, an address and possibly an
interrupt line.
If a device needs more specific bindings, such as properties to
describe some aspect of it, there needs to be a specific binding
document for it just like any other devices.
properties:
reg:
maxItems: 1
interrupts:
maxItems: 1
compatible:
items:
- enum:
# SMBus/I2C Digital Temperature Sensor in 6-Pin SOT with SMBus Alert and Over Temperature Pin
- ad,ad7414
# ADM9240: Complete System Hardware Monitor for uProcessor-Based Systems
- ad,adm9240
# +/-1C TDM Extended Temp Range I.C
- adi,adt7461
# +/-1C TDM Extended Temp Range I.C
- adt7461
# +/-1C TDM Extended Temp Range I.C
- adi,adt7473
# +/-1C TDM Extended Temp Range I.C
- adi,adt7475
# +/-1C TDM Extended Temp Range I.C
- adi,adt7476
# +/-1C TDM Extended Temp Range I.C
- adi,adt7490
# Three-Axis Digital Accelerometer
- adi,adxl345
# Three-Axis Digital Accelerometer (backward-compatibility value "adi,adxl345" must be listed too)
- adi,adxl346
# AMS iAQ-Core VOC Sensor
- ams,iaq-core
# i2c serial eeprom (24cxx)
- at,24c08
# i2c trusted platform module (TPM)
- atmel,at97sc3204t
# CM32181: Ambient Light Sensor
- capella,cm32181
# CM3232: Ambient Light Sensor
- capella,cm3232
# High-Precision Digital Thermometer
- dallas,ds1631
# Total-Elapsed-Time Recorder with Alarm
- dallas,ds1682
# Tiny Digital Thermometer and Thermostat
- dallas,ds1775
# CPU Supervisor with Nonvolatile Memory and Programmable I/O
- dallas,ds4510
# Digital Thermometer and Thermostat
- dallas,ds75
# Devantech SRF02 ultrasonic ranger in I2C mode
- devantech,srf02
# Devantech SRF08 ultrasonic ranger
- devantech,srf08
# Devantech SRF10 ultrasonic ranger
- devantech,srf10
# DA9053: flexible system level PMIC with multicore support
- dlg,da9053
# DA9063: system PMIC for quad-core application processors
- dlg,da9063
# DMARD09: 3-axis Accelerometer
- domintech,dmard09
# DMARD10: 3-axis Accelerometer
- domintech,dmard10
# MMA7660FC: 3-Axis Orientation/Motion Detection Sensor
- fsl,mma7660
# MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer
- fsl,mma8450
# MPL3115: Absolute Digital Pressure Sensor
- fsl,mpl3115
# MPR121: Proximity Capacitive Touch Sensor Controller
- fsl,mpr121
# SGTL5000: Ultra Low-Power Audio Codec
- fsl,sgtl5000
# G751: Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
- gmt,g751
# Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
- infineon,slb9635tt
# Infineon SLB9645 I2C TPM (new protocol, max 400khz)
- infineon,slb9645tt
# Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
- infineon,tlv493d-a1b6
# Intersil ISL29028 Ambient Light and Proximity Sensor
- isil,isl29028
# Intersil ISL29030 Ambient Light and Proximity Sensor
- isil,isl29030
# 5 Bit Programmable, Pulse-Width Modulator
- maxim,ds1050
# Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
- maxim,max1237
# PECI-to-I2C translator for PECI-to-SMBus/I2C protocol conversion
- maxim,max6621
# 9-Bit/12-Bit Temperature Sensors with I²C-Compatible Serial Interface
- maxim,max6625
# mCube 3-axis 8-bit digital accelerometer
- mcube,mc3230
# MEMSIC 2-axis 8-bit digital accelerometer
- memsic,mxc6225
# Microchip 7-bit Single I2C Digital POT (5k)
- microchip,mcp4017-502
# Microchip 7-bit Single I2C Digital POT (10k)
- microchip,mcp4017-103
# Microchip 7-bit Single I2C Digital POT (50k)
- microchip,mcp4017-503
# Microchip 7-bit Single I2C Digital POT (100k)
- microchip,mcp4017-104
# Microchip 7-bit Single I2C Digital POT (5k)
- microchip,mcp4018-502
# Microchip 7-bit Single I2C Digital POT (10k)
- microchip,mcp4018-103
# Microchip 7-bit Single I2C Digital POT (50k)
- microchip,mcp4018-503
# Microchip 7-bit Single I2C Digital POT (100k)
- microchip,mcp4018-104
# Microchip 7-bit Single I2C Digital POT (5k)
- microchip,mcp4019-502
# Microchip 7-bit Single I2C Digital POT (10k)
- microchip,mcp4019-103
# Microchip 7-bit Single I2C Digital POT (50k)
- microchip,mcp4019-503
# Microchip 7-bit Single I2C Digital POT (100k)
- microchip,mcp4019-104
# Microchip 7-bit Single I2C Digital Potentiometer (5k)
- microchip,mcp4531-502
# Microchip 7-bit Single I2C Digital Potentiometer (10k)
- microchip,mcp4531-103
# Microchip 7-bit Single I2C Digital Potentiometer (50k)
- microchip,mcp4531-503
# Microchip 7-bit Single I2C Digital Potentiometer (100k)
- microchip,mcp4531-104
# Microchip 7-bit Single I2C Digital Potentiometer (5k)
- microchip,mcp4532-502
# Microchip 7-bit Single I2C Digital Potentiometer (10k)
- microchip,mcp4532-103
# Microchip 7-bit Single I2C Digital Potentiometer (50k)
- microchip,mcp4532-503
# Microchip 7-bit Single I2C Digital Potentiometer (100k)
- microchip,mcp4532-104
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4541-502
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4541-103
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4541-503
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4541-104
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4542-502
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4542-103
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4542-503
# Microchip 7-bit Single I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4542-104
# Microchip 8-bit Single I2C Digital Potentiometer (5k)
- microchip,mcp4551-502
# Microchip 8-bit Single I2C Digital Potentiometer (10k)
- microchip,mcp4551-103
# Microchip 8-bit Single I2C Digital Potentiometer (50k)
- microchip,mcp4551-503
# Microchip 8-bit Single I2C Digital Potentiometer (100k)
- microchip,mcp4551-104
# Microchip 8-bit Single I2C Digital Potentiometer (5k)
- microchip,mcp4552-502
# Microchip 8-bit Single I2C Digital Potentiometer (10k)
- microchip,mcp4552-103
# Microchip 8-bit Single I2C Digital Potentiometer (50k)
- microchip,mcp4552-503
# Microchip 8-bit Single I2C Digital Potentiometer (100k)
- microchip,mcp4552-104
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4561-502
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4561-103
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4561-503
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4561-104
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4562-502
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4562-103
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4562-503
# Microchip 8-bit Single I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4562-104
# Microchip 7-bit Dual I2C Digital Potentiometer (5k)
- microchip,mcp4631-502
# Microchip 7-bit Dual I2C Digital Potentiometer (10k)
- microchip,mcp4631-103
# Microchip 7-bit Dual I2C Digital Potentiometer (50k)
- microchip,mcp4631-503
# Microchip 7-bit Dual I2C Digital Potentiometer (100k)
- microchip,mcp4631-104
# Microchip 7-bit Dual I2C Digital Potentiometer (5k)
- microchip,mcp4632-502
# Microchip 7-bit Dual I2C Digital Potentiometer (10k)
- microchip,mcp4632-103
# Microchip 7-bit Dual I2C Digital Potentiometer (50k)
- microchip,mcp4632-503
# Microchip 7-bit Dual I2C Digital Potentiometer (100k)
- microchip,mcp4632-104
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4641-502
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4641-103
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4641-503
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4641-104
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4642-502
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4642-103
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4642-503
# Microchip 7-bit Dual I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4642-104
# Microchip 8-bit Dual I2C Digital Potentiometer (5k)
- microchip,mcp4651-502
# Microchip 8-bit Dual I2C Digital Potentiometer (10k)
- microchip,mcp4651-103
# Microchip 8-bit Dual I2C Digital Potentiometer (50k)
- microchip,mcp4651-503
# Microchip 8-bit Dual I2C Digital Potentiometer (100k)
- microchip,mcp4651-104
# Microchip 8-bit Dual I2C Digital Potentiometer (5k)
- microchip,mcp4652-502
# Microchip 8-bit Dual I2C Digital Potentiometer (10k)
- microchip,mcp4652-103
# Microchip 8-bit Dual I2C Digital Potentiometer (50k)
- microchip,mcp4652-503
# Microchip 8-bit Dual I2C Digital Potentiometer (100k)
- microchip,mcp4652-104
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4661-502
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4661-103
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4661-503
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4661-104
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (5k)
- microchip,mcp4662-502
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (10k)
- microchip,mcp4662-103
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (50k)
- microchip,mcp4662-503
# Microchip 8-bit Dual I2C Digital Potentiometer with NV Memory (100k)
- microchip,mcp4662-104
# PWM Fan Speed Controller With Fan Fault Detection
- microchip,tc654
# PWM Fan Speed Controller With Fan Fault Detection
- microchip,tc655
# MiraMEMS DA226 2-axis 14-bit digital accelerometer
- miramems,da226
# MiraMEMS DA280 3-axis 14-bit digital accelerometer
- miramems,da280
# MiraMEMS DA311 3-axis 12-bit digital accelerometer
- miramems,da311
# Temperature sensor with integrated fan control
- national,lm63
# I2C TEMP SENSOR
- national,lm75
# Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
- national,lm80
# Temperature sensor with integrated fan control
- national,lm85
# ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
- national,lm92
# i2c trusted platform module (TPM)
- nuvoton,npct501
# i2c trusted platform module (TPM2)
- nuvoton,npct601
# Nuvoton Temperature Sensor
- nuvoton,w83773g
# Octal SMBus and I2C registered interface
- nxp,pca9556
# 8-bit I2C-bus and SMBus I/O port with reset
- nxp,pca9557
# OKI ML86V7667 video decoder
- oki,ml86v7667
# OV5642: Color CMOS QSXGA (5-megapixel) Image Sensor with OmniBSI and Embedded TrueFocus
- ovti,ov5642
# 48-Lane, 12-Port PCI Express Gen 2 (5.0 GT/s) Switch
- plx,pex8648
# Pulsedlight LIDAR range-finding sensor
- pulsedlight,lidar-lite-v2
# S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
- samsung,24ad0xd1
# SGX Sensortech VZ89X Sensors
- sgx,vz89x
# Relative Humidity and Temperature Sensors
- silabs,si7020
# Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply
- skyworks,sky81452
# i2c serial eeprom (24cxx)
- st,24c256
# Ambient Light Sensor with SMBUS/Two Wire Serial Interface
- taos,tsl2550
# 8-Channels, 12-bit ADC
- ti,ads7828
# 8-Channels, 8-bit ADC
- ti,ads7830
# Temperature Monitoring and Fan Control
- ti,amc6821
# I2C Touch-Screen Controller
- ti,tsc2003
# Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface
- ti,tmp102
# Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface
- ti,tmp103
# Digital Temperature Sensor
- ti,tmp275
# Winbond/Nuvoton H/W Monitor
- winbond,w83793
# i2c trusted platform module (TPM)
- winbond,wpct301
required:
- compatible
- reg
...

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Todo list for devicetree:
=== General structure ===
- Switch from custom lists to (h)list_head for nodes and properties structure
=== CONFIG_OF_DYNAMIC ===
- Switch to RCU for tree updates and get rid of global spinlock
- Document node lifecycle for CONFIG_OF_DYNAMIC
- Always set ->full_name at of_attach_node() time
- pseries: Get rid of open-coded tree modification from arch/powerpc/platforms/pseries/dlpar.c

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# Writing DeviceTree Bindings in json-schema
Devicetree bindings are written using json-schema vocabulary. Schema files are
written in a JSON compatible subset of YAML. YAML is used instead of JSON as it
considered more human readable and has some advantages such as allowing
comments (Prefixed with '#').
## Schema Contents
Each schema doc is a structured json-schema which is defined by a set of
top-level properties. Generally, there is one binding defined per file. The
top-level json-schema properties used are:
- __$id__ - A json-schema unique identifier string. The string must be a valid
URI typically containing the binding's filename and path. For DT schema, it must
begin with "http://devicetree.org/schemas/". The URL is used in constructing
references to other files specified in schema "$ref" properties. A $ref values
with a leading '/' will have the hostname prepended. A $ref value a relative
path or filename only will be prepended with the hostname and path components
of the current schema file's '$id' value. A URL is used even for local files,
but there may not actually be files present at those locations.
- __$schema__ - Indicates the meta-schema the schema file adheres to.
- __title__ - A one line description on the contents of the binding schema.
- __maintainers__ - A DT specific property. Contains a list of email address(es)
for maintainers of this binding.
- __description__ - Optional. A multi-line text block containing any detailed
information about this binding. It should contain things such as what the block
or device does, standards the device conforms to, and links to datasheets for
more information.
- __select__ - Optional. A json-schema used to match nodes for applying the
schema. By default without 'select', nodes are matched against their possible
compatible string values or node name. Most bindings should not need select.
- __allOf__ - Optional. A list of other schemas to include. This is used to
include other schemas the binding conforms to. This may be schemas for a
particular class of devices such as I2C or SPI controllers.
- __properties__ - A set of sub-schema defining all the DT properties for the
binding. The exact schema syntax depends on whether properties are known,
common properties (e.g. 'interrupts') or are binding/vendor specific properties.
A property can also define a child DT node with child properties defined
under it.
For more details on properties sections, see 'Property Schema' section.
- __patternProperties__ - Optional. Similar to 'properties', but names are regex.
- __required__ - A list of DT properties from the 'properties' section that
must always be present.
- __examples__ - Optional. A list of one or more DTS hunks implementing the
binding. Note: YAML doesn't allow leading tabs, so spaces must be used instead.
Unless noted otherwise, all properties are required.
## Property Schema
The 'properties' section of the schema contains all the DT properties for a
binding. Each property contains a set of constraints using json-schema
vocabulary for that property. The properties schemas are what is used for
validation of DT files.
For common properties, only additional constraints not covered by the common
binding schema need to be defined such as how many values are valid or what
possible values are valid.
Vendor specific properties will typically need more detailed schema. With the
exception of boolean properties, they should have a reference to a type in
schemas/types.yaml. A "description" property is always required.
The Devicetree schemas don't exactly match the YAML encoded DT data produced by
dtc. They are simplified to make them more compact and avoid a bunch of
boilerplate. The tools process the schema files to produce the final schema for
validation. There are currently 2 transformations the tools perform.
The default for arrays in json-schema is they are variable sized and allow more
entries than explicitly defined. This can be restricted by defining 'minItems',
'maxItems', and 'additionalItems'. However, for DeviceTree Schemas, a fixed
size is desired in most cases, so these properties are added based on the
number of entries in an 'items' list.
The YAML Devicetree format also makes all string values an array and scalar
values a matrix (in order to define groupings) even when only a single value
is present. Single entries in schemas are fixed up to match this encoding.
## Testing
### Dependencies
The DT schema project must be installed in order to validate the DT schema
binding documents and validate DTS files using the DT schema. The DT schema
project can be installed with pip:
`pip3 install git+https://github.com/robherring/yaml-bindings.git@master`
dtc must also be built with YAML output support enabled. This requires that
libyaml and its headers be installed on the host system.
### Running checks
The DT schema binding documents must be validated using the meta-schema (the
schema for the schema) to ensure they are both valid json-schema and valid
binding schema. All of the DT binding documents can be validated using the
`dt_binding_check` target:
`make dt_binding_check`
In order to perform validation of DT source files, use the `dtbs_check` target:
`make dtbs_check`
This will first run the `dt_binding_check` which generates the processed schema.
It is also possible to run checks with a single schema file by setting the
'DT_SCHEMA_FILES' variable to a specific schema file.
`make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/trivial-devices.yaml`
## json-schema Resources
[JSON-Schema Specifications](http://json-schema.org/)
[Using JSON Schema Book](http://usingjsonschema.com/)

2
MAINTAINERS
View File

@ -2353,7 +2353,7 @@ F: drivers/pinctrl/zte/
F: drivers/soc/zte/
F: drivers/thermal/zx2967_thermal.c
F: drivers/watchdog/zx2967_wdt.c
F: Documentation/devicetree/bindings/arm/zte.txt
F: Documentation/devicetree/bindings/arm/zte.yaml
F: Documentation/devicetree/bindings/clock/zx2967*.txt
F: Documentation/devicetree/bindings/dma/zxdma.txt
F: Documentation/devicetree/bindings/gpio/zx296702-gpio.txt

13
Makefile
View File

@ -1230,10 +1230,13 @@ ifneq ($(dtstree),)
%.dtb: prepare3 scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
PHONY += dtbs dtbs_install
dtbs: prepare3 scripts_dtc
PHONY += dtbs dtbs_install dt_binding_check
dtbs dtbs_check: prepare3 scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree)
dtbs_check: export CHECK_DTBS=1
dtbs_check: dt_binding_check
dtbs_install:
$(Q)$(MAKE) $(dtbinst)=$(dtstree)
@ -1247,6 +1250,9 @@ PHONY += scripts_dtc
scripts_dtc: scripts_basic
$(Q)$(MAKE) $(build)=scripts/dtc
dt_binding_check: scripts_dtc
$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
# ---------------------------------------------------------------------------
# Modules
@ -1609,7 +1615,8 @@ clean: $(clean-dirs)
$(call cmd,rmfiles)
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
\( -name '*.[aios]' -o -name '*.ko' -o -name '.*.cmd' \
-o -name '*.ko.*' -o -name '*.dtb' -o -name '*.dtb.S' \
-o -name '*.ko.*' \
-o -name '*.dtb' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
-o -name '*.dwo' -o -name '*.lst' \
-o -name '*.su' \
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \

25
arch/arc/mm/init.c
View File

@ -78,24 +78,6 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size)
base, TO_MB(size), !in_use ? "Not used":"");
}
#ifdef CONFIG_BLK_DEV_INITRD
static int __init early_initrd(char *p)
{
unsigned long start, size;
char *endp;
start = memparse(p, &endp);
if (*endp == ',') {
size = memparse(endp + 1, NULL);
initrd_start = (unsigned long)__va(start);
initrd_end = (unsigned long)__va(start + size);
}
return 0;
}
early_param("initrd", early_initrd);
#endif
/*
* First memory setup routine called from setup_arch()
* 1. setup swapper's mm @init_mm
@ -140,8 +122,11 @@ void __init setup_arch_memory(void)
memblock_reserve(low_mem_start, __pa(_end) - low_mem_start);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start)
memblock_reserve(__pa(initrd_start), initrd_end - initrd_start);
if (phys_initrd_size) {
memblock_reserve(phys_initrd_start, phys_initrd_size);
initrd_start = (unsigned long)__va(phys_initrd_start);
initrd_end = initrd_start + phys_initrd_size;
}
#endif
early_init_fdt_reserve_self();

28
arch/arm/mm/init.c
View File

@ -50,26 +50,7 @@ unsigned long __init __clear_cr(unsigned long mask)
}
#endif
static phys_addr_t phys_initrd_start __initdata = 0;
static unsigned long phys_initrd_size __initdata = 0;
static int __init early_initrd(char *p)
{
phys_addr_t start;
unsigned long size;
char *endp;
start = memparse(p, &endp);
if (*endp == ',') {
size = memparse(endp + 1, NULL);
phys_initrd_start = start;
phys_initrd_size = size;
}
return 0;
}
early_param("initrd", early_initrd);
#ifdef CONFIG_BLK_DEV_INITRD
static int __init parse_tag_initrd(const struct tag *tag)
{
pr_warn("ATAG_INITRD is deprecated; "
@ -89,6 +70,7 @@ static int __init parse_tag_initrd2(const struct tag *tag)
}
__tagtable(ATAG_INITRD2, parse_tag_initrd2);
#endif
static void __init find_limits(unsigned long *min, unsigned long *max_low,
unsigned long *max_high)
@ -236,12 +218,6 @@ static void __init arm_initrd_init(void)
phys_addr_t start;
unsigned long size;
/* FDT scan will populate initrd_start */
if (initrd_start && !phys_initrd_size) {
phys_initrd_start = __virt_to_phys(initrd_start);
phys_initrd_size = initrd_end - initrd_start;
}
initrd_start = initrd_end = 0;
if (!phys_initrd_size)

8
arch/arm64/include/asm/memory.h
View File

@ -171,14 +171,6 @@
#define IOREMAP_MAX_ORDER (PMD_SHIFT)
#endif
#ifdef CONFIG_BLK_DEV_INITRD
#define __early_init_dt_declare_initrd(__start, __end) \
do { \
initrd_start = (__start); \
initrd_end = (__end); \
} while (0)
#endif
#ifndef __ASSEMBLY__
#include <linux/bitops.h>

34
arch/arm64/mm/init.c
View File

@ -63,24 +63,6 @@ EXPORT_SYMBOL(memstart_addr);
phys_addr_t arm64_dma_phys_limit __ro_after_init;
#ifdef CONFIG_BLK_DEV_INITRD
static int __init early_initrd(char *p)
{
unsigned long start, size;
char *endp;
start = memparse(p, &endp);
if (*endp == ',') {
size = memparse(endp + 1, NULL);
initrd_start = start;
initrd_end = start + size;
}
return 0;
}
early_param("initrd", early_initrd);
#endif
#ifdef CONFIG_KEXEC_CORE
/*
* reserve_crashkernel() - reserves memory for crash kernel
@ -417,14 +399,14 @@ void __init arm64_memblock_init(void)
memblock_add(__pa_symbol(_text), (u64)(_end - _text));
}
if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) && initrd_start) {
if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) && phys_initrd_size) {
/*
* Add back the memory we just removed if it results in the
* initrd to become inaccessible via the linear mapping.
* Otherwise, this is a no-op
*/
u64 base = initrd_start & PAGE_MASK;
u64 size = PAGE_ALIGN(initrd_end) - base;
u64 base = phys_initrd_start & PAGE_MASK;
u64 size = PAGE_ALIGN(phys_initrd_size);
/*
* We can only add back the initrd memory if we don't end up
@ -468,15 +450,11 @@ void __init arm64_memblock_init(void)
* pagetables with memblock.
*/
memblock_reserve(__pa_symbol(_text), _end - _text);
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start) {
memblock_reserve(initrd_start, initrd_end - initrd_start);
if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) && phys_initrd_size) {
/* the generic initrd code expects virtual addresses */
initrd_start = __phys_to_virt(initrd_start);
initrd_end = __phys_to_virt(initrd_end);
initrd_start = __phys_to_virt(phys_initrd_start);
initrd_end = initrd_start + phys_initrd_size;
}
#endif
early_init_fdt_scan_reserved_mem();

2
arch/nds32/mm/init.c
View File

@ -21,8 +21,6 @@
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
DEFINE_SPINLOCK(anon_alias_lock);
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern unsigned long phys_initrd_start;
extern unsigned long phys_initrd_size;
/*
* empty_zero_page is a special page that is used for

2
arch/powerpc/platforms/pseries/dlpar.c
View File

@ -270,6 +270,8 @@ int dlpar_detach_node(struct device_node *dn)
if (rc)
return rc;
of_node_put(dn);
return 0;
}

24
arch/unicore32/mm/init.c
View File

@ -30,25 +30,6 @@
#include "mm.h"
static unsigned long phys_initrd_start __initdata = 0x01000000;
static unsigned long phys_initrd_size __initdata = SZ_8M;
static int __init early_initrd(char *p)
{
unsigned long start, size;
char *endp;
start = memparse(p, &endp);
if (*endp == ',') {
size = memparse(endp + 1, NULL);
phys_initrd_start = start;
phys_initrd_size = size;
}
return 0;
}
early_param("initrd", early_initrd);
/*
* This keeps memory configuration data used by a couple memory
* initialization functions, as well as show_mem() for the skipping
@ -156,6 +137,11 @@ void __init uc32_memblock_init(struct meminfo *mi)
memblock_reserve(__pa(_text), _end - _text);
#ifdef CONFIG_BLK_DEV_INITRD
if (!phys_initrd_size) {
phys_initrd_start = 0x01000000;
phys_initrd_size = SZ_8M;
}
if (phys_initrd_size) {
memblock_reserve(phys_initrd_start, phys_initrd_size);

4
drivers/irqchip/irq-gic-v3.c
View File

@ -1199,8 +1199,8 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node)
part->partition_id = of_node_to_fwnode(child_part);
pr_info("GIC: PPI partition %s[%d] { ",
child_part->name, part_idx);
pr_info("GIC: PPI partition %pOFn[%d] { ",
child_part, part_idx);
n = of_property_count_elems_of_size(child_part, "affinity",
sizeof(u32));

22
drivers/irqchip/irq-orion.c
View File

@ -64,14 +64,14 @@ static int __init orion_irq_init(struct device_node *np,
num_chips * ORION_IRQS_PER_CHIP,
&irq_generic_chip_ops, NULL);
if (!orion_irq_domain)
panic("%s: unable to add irq domain\n", np->name);
panic("%pOFn: unable to add irq domain\n", np);
ret = irq_alloc_domain_generic_chips(orion_irq_domain,
ORION_IRQS_PER_CHIP, 1, np->name,
ORION_IRQS_PER_CHIP, 1, np->full_name,
handle_level_irq, clr, 0,
IRQ_GC_INIT_MASK_CACHE);
if (ret)
panic("%s: unable to alloc irq domain gc\n", np->name);
panic("%pOFn: unable to alloc irq domain gc\n", np);
for (n = 0, base = 0; n < num_chips; n++, base += ORION_IRQS_PER_CHIP) {
struct irq_chip_generic *gc =
@ -80,12 +80,12 @@ static int __init orion_irq_init(struct device_node *np,
of_address_to_resource(np, n, &r);
if (!request_mem_region(r.start, resource_size(&r), np->name))
panic("%s: unable to request mem region %d",
np->name, n);
panic("%pOFn: unable to request mem region %d",
np, n);
gc->reg_base = ioremap(r.start, resource_size(&r));
if (!gc->reg_base)
panic("%s: unable to map resource %d", np->name, n);
panic("%pOFn: unable to map resource %d", np, n);
gc->chip_types[0].regs.mask = ORION_IRQ_MASK;
gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit;
@ -150,20 +150,20 @@ static int __init orion_bridge_irq_init(struct device_node *np,
domain = irq_domain_add_linear(np, nrirqs,
&irq_generic_chip_ops, NULL);
if (!domain) {
pr_err("%s: unable to add irq domain\n", np->name);
pr_err("%pOFn: unable to add irq domain\n", np);
return -ENOMEM;
}
ret = irq_alloc_domain_generic_chips(domain, nrirqs, 1, np->name,
handle_edge_irq, clr, 0, IRQ_GC_INIT_MASK_CACHE);
if (ret) {
pr_err("%s: unable to alloc irq domain gc\n", np->name);
pr_err("%pOFn: unable to alloc irq domain gc\n", np);
return ret;
}
ret = of_address_to_resource(np, 0, &r);
if (ret) {
pr_err("%s: unable to get resource\n", np->name);
pr_err("%pOFn: unable to get resource\n", np);
return ret;
}
@ -175,14 +175,14 @@ static int __init orion_bridge_irq_init(struct device_node *np,
/* Map the parent interrupt for the chained handler */
irq = irq_of_parse_and_map(np, 0);
if (irq <= 0) {
pr_err("%s: unable to parse irq\n", np->name);
pr_err("%pOFn: unable to parse irq\n", np);
return -EINVAL;
}
gc = irq_get_domain_generic_chip(domain, 0);
gc->reg_base = ioremap(r.start, resource_size(&r));
if (!gc->reg_base) {
pr_err("%s: unable to map resource\n", np->name);
pr_err("%pOFn: unable to map resource\n", np);
return -ENOMEM;
}

18
drivers/irqchip/irq-tb10x.c
View File

@ -115,21 +115,21 @@ static int __init of_tb10x_init_irq(struct device_node *ictl,
void __iomem *reg_base;
if (of_address_to_resource(ictl, 0, &mem)) {
pr_err("%s: No registers declared in DeviceTree.\n",
ictl->name);
pr_err("%pOFn: No registers declared in DeviceTree.\n",
ictl);
return -EINVAL;
}
if (!request_mem_region(mem.start, resource_size(&mem),
ictl->name)) {
pr_err("%s: Request mem region failed.\n", ictl->name);
ictl->full_name)) {
pr_err("%pOFn: Request mem region failed.\n", ictl);
return -EBUSY;
}
reg_base = ioremap(mem.start, resource_size(&mem));
if (!reg_base) {
ret = -EBUSY;
pr_err("%s: ioremap failed.\n", ictl->name);
pr_err("%pOFn: ioremap failed.\n", ictl);
goto ioremap_fail;
}
@ -137,8 +137,8 @@ static int __init of_tb10x_init_irq(struct device_node *ictl,
&irq_generic_chip_ops, NULL);
if (!domain) {
ret = -ENOMEM;
pr_err("%s: Could not register interrupt domain.\n",
ictl->name);
pr_err("%pOFn: Could not register interrupt domain.\n",
ictl);
goto irq_domain_add_fail;
}
@ -147,8 +147,8 @@ static int __init of_tb10x_init_irq(struct device_node *ictl,
IRQ_NOREQUEST, IRQ_NOPROBE,
IRQ_GC_INIT_MASK_CACHE);
if (ret) {
pr_err("%s: Could not allocate generic interrupt chip.\n",
ictl->name);
pr_err("%pOFn: Could not allocate generic interrupt chip.\n",
ictl);
goto gc_alloc_fail;
}

18
drivers/memory/omap-gpmc.c
View File

@ -2146,8 +2146,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
gpmc_s.device_width = GPMC_DEVWIDTH_16BIT;
break;
default:
dev_err(&pdev->dev, "%s: invalid 'nand-bus-width'\n",
child->name);
dev_err(&pdev->dev, "%pOFn: invalid 'nand-bus-width'\n",
child);
ret = -EINVAL;
goto err;
}
@ -2188,8 +2188,8 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
ret = gpmc_cs_set_timings(cs, &gpmc_t, &gpmc_s);
if (ret) {
dev_err(&pdev->dev, "failed to set gpmc timings for: %s\n",
child->name);
dev_err(&pdev->dev, "failed to set gpmc timings for: %pOFn\n",
child);
goto err_cs;
}
@ -2217,7 +2217,7 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
err_child_fail:
dev_err(&pdev->dev, "failed to create gpmc child %s\n", child->name);
dev_err(&pdev->dev, "failed to create gpmc child %pOFn\n", child);
ret = -ENODEV;
err_cs:
@ -2267,14 +2267,10 @@ static void gpmc_probe_dt_children(struct platform_device *pdev)
struct device_node *child;
for_each_available_child_of_node(pdev->dev.of_node, child) {
if (!child->name)
continue;
ret = gpmc_probe_generic_child(pdev, child);
if (ret) {
dev_err(&pdev->dev, "failed to probe DT child '%s': %d\n",
child->name, ret);
dev_err(&pdev->dev, "failed to probe DT child '%pOFn': %d\n",
child, ret);
}
}
}

4
drivers/memory/samsung/exynos-srom.c
View File

@ -139,8 +139,8 @@ static int exynos_srom_probe(struct platform_device *pdev)
for_each_child_of_node(np, child) {
if (exynos_srom_configure_bank(srom, child)) {
dev_err(dev,
"Could not decode bank configuration for %s\n",
child->name);
"Could not decode bank configuration for %pOFn\n",
child);
bad_bank_config = true;
}
}

6
drivers/memory/tegra/mc.c
View File

@ -345,7 +345,7 @@ static int load_one_timing(struct tegra_mc *mc,
err = of_property_read_u32(node, "clock-frequency", &tmp);
if (err) {
dev_err(mc->dev,
"timing %s: failed to read rate\n", node->name);
"timing %pOFn: failed to read rate\n", node);
return err;
}
@ -360,8 +360,8 @@ static int load_one_timing(struct tegra_mc *mc,
mc->soc->num_emem_regs);
if (err) {
dev_err(mc->dev,
"timing %s: failed to read EMEM configuration\n",
node->name);
"timing %pOFn: failed to read EMEM configuration\n",
node);
return err;
}

12
drivers/memory/tegra/tegra124-emc.c
View File

@ -888,8 +888,8 @@ static int load_one_timing_from_dt(struct tegra_emc *emc,
err = of_property_read_u32(node, "clock-frequency", &value);
if (err) {
dev_err(emc->dev, "timing %s: failed to read rate: %d\n",
node->name, err);
dev_err(emc->dev, "timing %pOFn: failed to read rate: %d\n",
node, err);
return err;
}
@ -900,16 +900,16 @@ static int load_one_timing_from_dt(struct tegra_emc *emc,
ARRAY_SIZE(timing->emc_burst_data));
if (err) {
dev_err(emc->dev,
"timing %s: failed to read emc burst data: %d\n",
node->name, err);
"timing %pOFn: failed to read emc burst data: %d\n",
node, err);
return err;
}
#define EMC_READ_PROP(prop, dtprop) { \
err = of_property_read_u32(node, dtprop, &timing->prop); \
if (err) { \
dev_err(emc->dev, "timing %s: failed to read " #prop ": %d\n", \
node->name, err); \
dev_err(emc->dev, "timing %pOFn: failed to read " #prop ": %d\n", \
node, err); \
return err; \
} \
}

2
drivers/mtd/devices/powernv_flash.c
View File

@ -212,7 +212,7 @@ static int powernv_flash_set_driver_info(struct device *dev,
* Going to have to check what details I need to set and how to
* get them
*/
mtd->name = of_get_property(dev->of_node, "name", NULL);
mtd->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFn", dev->of_node);
mtd->type = MTD_NORFLASH;
mtd->flags = MTD_WRITEABLE;
mtd->size = size;

6
drivers/of/address.c
View File

@ -110,8 +110,8 @@ static int of_bus_pci_match(struct device_node *np)
* "vci" is for the /chaos bridge on 1st-gen PCI powermacs
* "ht" is hypertransport
*/
return !strcmp(np->type, "pci") || !strcmp(np->type, "pciex") ||
!strcmp(np->type, "vci") || !strcmp(np->type, "ht");
return of_node_is_type(np, "pci") || of_node_is_type(np, "pciex") ||
of_node_is_type(np, "vci") || of_node_is_type(np, "ht");
}
static void of_bus_pci_count_cells(struct device_node *np,
@ -371,7 +371,7 @@ EXPORT_SYMBOL(of_pci_range_to_resource);
static int of_bus_isa_match(struct device_node *np)
{
return !strcmp(np->name, "isa");
return of_node_name_eq(np, "isa");
}
static void of_bus_isa_count_cells(struct device_node *child,

126
drivers/of/base.c
View File

@ -79,6 +79,13 @@ bool of_node_name_prefix(const struct device_node *np, const char *prefix)
}
EXPORT_SYMBOL(of_node_name_prefix);
static bool __of_node_is_type(const struct device_node *np, const char *type)
{
const char *match = __of_get_property(np, "device_type", NULL);
return np && match && type && !strcmp(match, type);
}
int of_n_addr_cells(struct device_node *np)
{
u32 cells;
@ -116,9 +123,6 @@ int __weak of_node_to_nid(struct device_node *np)
}
#endif
static struct device_node **phandle_cache;
static u32 phandle_cache_mask;
/*
* Assumptions behind phandle_cache implementation:
* - phandle property values are in a contiguous range of 1..n
@ -127,6 +131,66 @@ static u32 phandle_cache_mask;
* - the phandle lookup overhead reduction provided by the cache
* will likely be less
*/
static struct device_node **phandle_cache;
static u32 phandle_cache_mask;
/*
* Caller must hold devtree_lock.
*/
static void __of_free_phandle_cache(void)
{
u32 cache_entries = phandle_cache_mask + 1;
u32 k;
if (!phandle_cache)
return;
for (k = 0; k < cache_entries; k++)
of_node_put(phandle_cache[k]);
kfree(phandle_cache);
phandle_cache = NULL;
}
int of_free_phandle_cache(void)
{
unsigned long flags;
raw_spin_lock_irqsave(&devtree_lock, flags);
__of_free_phandle_cache();
raw_spin_unlock_irqrestore(&devtree_lock, flags);
return 0;
}
#if !defined(CONFIG_MODULES)
late_initcall_sync(of_free_phandle_cache);
#endif
/*
* Caller must hold devtree_lock.
*/
void __of_free_phandle_cache_entry(phandle handle)
{
phandle masked_handle;
struct device_node *np;
if (!handle)
return;
masked_handle = handle & phandle_cache_mask;
if (phandle_cache) {
np = phandle_cache[masked_handle];
if (np && handle == np->phandle) {
of_node_put(np);
phandle_cache[masked_handle] = NULL;
}
}
}
void of_populate_phandle_cache(void)
{
unsigned long flags;
@ -136,8 +200,7 @@ void of_populate_phandle_cache(void)
raw_spin_lock_irqsave(&devtree_lock, flags);
kfree(phandle_cache);
phandle_cache = NULL;
__of_free_phandle_cache();
for_each_of_allnodes(np)
if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL)
@ -155,30 +218,15 @@ void of_populate_phandle_cache(void)
goto out;
for_each_of_allnodes(np)
if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL)
if (np->phandle && np->phandle != OF_PHANDLE_ILLEGAL) {
of_node_get(np);
phandle_cache[np->phandle & phandle_cache_mask] = np;
}
out:
raw_spin_unlock_irqrestore(&devtree_lock, flags);
}
int of_free_phandle_cache(void)
{
unsigned long flags;
raw_spin_lock_irqsave(&devtree_lock, flags);
kfree(phandle_cache);
phandle_cache = NULL;
raw_spin_unlock_irqrestore(&devtree_lock, flags);
return 0;
}
#if !defined(CONFIG_MODULES)
late_initcall_sync(of_free_phandle_cache);
#endif
void __init of_core_init(void)
{
struct device_node *np;
@ -482,14 +530,14 @@ static int __of_device_is_compatible(const struct device_node *device,
/* Matching type is better than matching name */
if (type && type[0]) {
if (!device->type || of_node_cmp(type, device->type))
if (!__of_node_is_type(device, type))
return 0;
score += 2;
}
/* Matching name is a bit better than not */
if (name && name[0]) {
if (!device->name || of_node_cmp(name, device->name))
if (!of_node_name_eq(device, name))
return 0;
score++;
}
@ -775,7 +823,7 @@ struct device_node *of_get_next_cpu_node(struct device_node *prev)
}
for (; next; next = next->sibling) {
if (!(of_node_name_eq(next, "cpu") ||
(next->type && !of_node_cmp(next->type, "cpu"))))
__of_node_is_type(next, "cpu")))
continue;
if (of_node_get(next))
break;
@ -828,7 +876,7 @@ struct device_node *of_get_child_by_name(const struct device_node *node,
struct device_node *child;
for_each_child_of_node(node, child)
if (child->name && (of_node_cmp(child->name, name) == 0))
if (of_node_name_eq(child, name))
break;
return child;
}
@ -954,8 +1002,7 @@ struct device_node *of_find_node_by_name(struct device_node *from,
raw_spin_lock_irqsave(&devtree_lock, flags);
for_each_of_allnodes_from(from, np)
if (np->name && (of_node_cmp(np->name, name) == 0)
&& of_node_get(np))
if (of_node_name_eq(np, name) && of_node_get(np))
break;
of_node_put(from);
raw_spin_unlock_irqrestore(&devtree_lock, flags);
@ -983,8 +1030,7 @@ struct device_node *of_find_node_by_type(struct device_node *from,
raw_spin_lock_irqsave(&devtree_lock, flags);
for_each_of_allnodes_from(from, np)
if (np->type && (of_node_cmp(np->type, type) == 0)
&& of_node_get(np))
if (__of_node_is_type(np, type) && of_node_get(np))
break;
of_node_put(from);
raw_spin_unlock_irqrestore(&devtree_lock, flags);
@ -1190,13 +1236,23 @@ struct device_node *of_find_node_by_phandle(phandle handle)
if (phandle_cache[masked_handle] &&
handle == phandle_cache[masked_handle]->phandle)
np = phandle_cache[masked_handle];
if (np && of_node_check_flag(np, OF_DETACHED)) {
WARN_ON(1); /* did not uncache np on node removal */
of_node_put(np);
phandle_cache[masked_handle] = NULL;
np = NULL;
}
}
if (!np) {
for_each_of_allnodes(np)
if (np->phandle == handle) {
if (phandle_cache)
if (np->phandle == handle &&
!of_node_check_flag(np, OF_DETACHED)) {
if (phandle_cache) {
/* will put when removed from cache */
of_node_get(np);
phandle_cache[masked_handle] = np;
}
break;
}
}
@ -2108,9 +2164,9 @@ struct device_node *of_find_next_cache_node(const struct device_node *np)
/* OF on pmac has nodes instead of properties named "l2-cache"
* beneath CPU nodes.
*/
if (IS_ENABLED(CONFIG_PPC_PMAC) && !strcmp(np->type, "cpu"))
if (IS_ENABLED(CONFIG_PPC_PMAC) && of_node_is_type(np, "cpu"))
for_each_child_of_node(np, child)
if (!strcmp(child->type, "cache"))
if (of_node_is_type(child, "cache"))
return child;
return NULL;

9
drivers/of/device.c
View File

@ -211,7 +211,7 @@ static ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len
/* Name & Type */
/* %p eats all alphanum characters, so %c must be used here */
csize = snprintf(str, len, "of:N%pOFn%c%s", dev->of_node, 'T',
dev->of_node->type);
of_node_get_device_type(dev->of_node));
tsize = csize;
len -= csize;
if (str)
@ -281,7 +281,7 @@ EXPORT_SYMBOL_GPL(of_device_modalias);
*/
void of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
{
const char *compat;
const char *compat, *type;
struct alias_prop *app;
struct property *p;
int seen = 0;
@ -291,8 +291,9 @@ void of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
add_uevent_var(env, "OF_NAME=%pOFn", dev->of_node);
add_uevent_var(env, "OF_FULLNAME=%pOF", dev->of_node);
if (dev->of_node->type && strcmp("<NULL>", dev->of_node->type) != 0)
add_uevent_var(env, "OF_TYPE=%s", dev->of_node->type);
type = of_node_get_device_type(dev->of_node);
if (type)
add_uevent_var(env, "OF_TYPE=%s", type);
/* Since the compatible field can contain pretty much anything
* it's not really legal to split it out with commas. We split it

60
drivers/of/dynamic.c
View File

@ -205,15 +205,24 @@ static void __of_attach_node(struct device_node *np)
const __be32 *phandle;
int sz;
np->name = __of_get_property(np, "name", NULL) ? : "<NULL>";
np->type = __of_get_property(np, "device_type", NULL) ? : "<NULL>";
if (!of_node_check_flag(np, OF_OVERLAY)) {
np->name = __of_get_property(np, "name", NULL);
np->type = __of_get_property(np, "device_type", NULL);
if (!np->name)
np->name = "<NULL>";
if (!np->type)
np->type = "<NULL>";
phandle = __of_get_property(np, "phandle", &sz);
if (!phandle)
phandle = __of_get_property(np, "linux,phandle", &sz);
if (IS_ENABLED(CONFIG_PPC_PSERIES) && !phandle)
phandle = __of_get_property(np, "ibm,phandle", &sz);
np->phandle = (phandle && (sz >= 4)) ? be32_to_cpup(phandle) : 0;
phandle = __of_get_property(np, "phandle", &sz);
if (!phandle)
phandle = __of_get_property(np, "linux,phandle", &sz);
if (IS_ENABLED(CONFIG_PPC_PSERIES) && !phandle)
phandle = __of_get_property(np, "ibm,phandle", &sz);
if (phandle && (sz >= 4))
np->phandle = be32_to_cpup(phandle);
else
np->phandle = 0;
}
np->child = NULL;
np->sibling = np->parent->child;
@ -268,13 +277,13 @@ void __of_detach_node(struct device_node *np)
}
of_node_set_flag(np, OF_DETACHED);
/* race with of_find_node_by_phandle() prevented by devtree_lock */
__of_free_phandle_cache_entry(np->phandle);
}
/**
* of_detach_node() - "Unplug" a node from the device tree.
*
* The caller must hold a reference to the node. The memory associated with
* the node is not freed until its refcount goes to zero.
*/
int of_detach_node(struct device_node *np)
{
@ -330,6 +339,25 @@ void of_node_release(struct kobject *kobj)
if (!of_node_check_flag(node, OF_DYNAMIC))
return;
if (of_node_check_flag(node, OF_OVERLAY)) {
if (!of_node_check_flag(node, OF_OVERLAY_FREE_CSET)) {
/* premature refcount of zero, do not free memory */
pr_err("ERROR: memory leak before free overlay changeset, %pOF\n",
node);
return;
}
/*
* If node->properties non-empty then properties were added
* to this node either by different overlay that has not
* yet been removed, or by a non-overlay mechanism.
*/
if (node->properties)
pr_err("ERROR: %s(), unexpected properties in %pOF\n",
__func__, node);
}
property_list_free(node->properties);
property_list_free(node->deadprops);
@ -434,6 +462,16 @@ struct device_node *__of_node_dup(const struct device_node *np,
static void __of_changeset_entry_destroy(struct of_changeset_entry *ce)
{
if (ce->action == OF_RECONFIG_ATTACH_NODE &&
of_node_check_flag(ce->np, OF_OVERLAY)) {
if (kref_read(&ce->np->kobj.kref) > 1) {
pr_err("ERROR: memory leak, expected refcount 1 instead of %d, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node %pOF\n",
kref_read(&ce->np->kobj.kref), ce->np);
} else {
of_node_set_flag(ce->np, OF_OVERLAY_FREE_CSET);
}
}
of_node_put(ce->np);
list_del(&ce->node);
kfree(ce);

23
drivers/of/fdt.c
View File

@ -891,15 +891,20 @@ const void * __init of_flat_dt_match_machine(const void *default_match,
}
#ifdef CONFIG_BLK_DEV_INITRD
#ifndef __early_init_dt_declare_initrd
static void __early_init_dt_declare_initrd(unsigned long start,
unsigned long end)
{
initrd_start = (unsigned long)__va(start);
initrd_end = (unsigned long)__va(end);
initrd_below_start_ok = 1;
/* ARM64 would cause a BUG to occur here when CONFIG_DEBUG_VM is
* enabled since __va() is called too early. ARM64 does make use
* of phys_initrd_start/phys_initrd_size so we can skip this
* conversion.
*/
if (!IS_ENABLED(CONFIG_ARM64)) {
initrd_start = (unsigned long)__va(start);
initrd_end = (unsigned long)__va(end);
initrd_below_start_ok = 1;
}
}
#endif
/**
* early_init_dt_check_for_initrd - Decode initrd location from flat tree
@ -924,6 +929,8 @@ static void __init early_init_dt_check_for_initrd(unsigned long node)
end = of_read_number(prop, len/4);
__early_init_dt_declare_initrd(start, end);
phys_initrd_start = start;
phys_initrd_size = end - start;
pr_debug("initrd_start=0x%llx initrd_end=0x%llx\n",
(unsigned long long)start, (unsigned long long)end);
@ -1200,8 +1207,12 @@ bool __init early_init_dt_verify(void *params)
void __init early_init_dt_scan_nodes(void)
{
int rc = 0;
/* Retrieve various information from the /chosen node */
of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
rc = of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
if (!rc)
pr_warn("No chosen node found, continuing without\n");
/* Initialize {size,address}-cells info */
of_scan_flat_dt(early_init_dt_scan_root, NULL);

4
drivers/of/kobj.c
View File

@ -133,6 +133,9 @@ int __of_attach_node_sysfs(struct device_node *np)
}
if (!name)
return -ENOMEM;
of_node_get(np);
rc = kobject_add(&np->kobj, parent, "%s", name);
kfree(name);
if (rc)
@ -159,6 +162,5 @@ void __of_detach_node_sysfs(struct device_node *np)
kobject_del(&np->kobj);
}
/* finally remove the kobj_init ref */
of_node_put(np);
}

4
drivers/of/of_private.h
View File

@ -84,6 +84,10 @@ static inline void __of_detach_node_sysfs(struct device_node *np) {}
int of_resolve_phandles(struct device_node *tree);
#endif
#if defined(CONFIG_OF_DYNAMIC)
void __of_free_phandle_cache_entry(phandle handle);
#endif
#if defined(CONFIG_OF_OVERLAY)
void of_overlay_mutex_lock(void);
void of_overlay_mutex_unlock(void);

292
drivers/of/overlay.c
View File

@ -23,14 +23,34 @@
#include "of_private.h"
/**
* struct target - info about current target node as recursing through overlay
* @np: node where current level of overlay will be applied
* @in_livetree: @np is a node in the live devicetree
*
* Used in the algorithm to create the portion of a changeset that describes
* an overlay fragment, which is a devicetree subtree. Initially @np is a node
* in the live devicetree where the overlay subtree is targeted to be grafted
* into. When recursing to the next level of the overlay subtree, the target
* also recurses to the next level of the live devicetree, as long as overlay
* subtree node also exists in the live devicetree. When a node in the overlay
* subtree does not exist at the same level in the live devicetree, target->np
* points to a newly allocated node, and all subsequent targets in the subtree
* will be newly allocated nodes.
*/
struct target {
struct device_node *np;
bool in_livetree;
};
/**
* struct fragment - info about fragment nodes in overlay expanded device tree
* @target: target of the overlay operation
* @overlay: pointer to the __overlay__ node
*/
struct fragment {
struct device_node *target;
struct device_node *overlay;
struct device_node *target;
};
/**
@ -72,8 +92,7 @@ static int devicetree_corrupt(void)
}
static int build_changeset_next_level(struct overlay_changeset *ovcs,
struct device_node *target_node,
const struct device_node *overlay_node);
struct target *target, const struct device_node *overlay_node);
/*
* of_resolve_phandles() finds the largest phandle in the live tree.
@ -257,15 +276,23 @@ static struct property *dup_and_fixup_symbol_prop(
/**
* add_changeset_property() - add @overlay_prop to overlay changeset
* @ovcs: overlay changeset
* @target_node: where to place @overlay_prop in live tree
* @target: where @overlay_prop will be placed
* @overlay_prop: property to add or update, from overlay tree
* @is_symbols_prop: 1 if @overlay_prop is from node "/__symbols__"
*
* If @overlay_prop does not already exist in @target_node, add changeset entry
* to add @overlay_prop in @target_node, else add changeset entry to update
* If @overlay_prop does not already exist in live devicetree, add changeset
* entry to add @overlay_prop in @target, else add changeset entry to update
* value of @overlay_prop.
*
* Some special properties are not updated (no error returned).
* @target may be either in the live devicetree or in a new subtree that
* is contained in the changeset.
*
* Some special properties are not added or updated (no error returned):
* "name", "phandle", "linux,phandle".
*
* Properties "#address-cells" and "#size-cells" are not updated if they
* are already in the live tree, but if present in the live tree, the values
* in the overlay must match the values in the live tree.
*
* Update of property in symbols node is not allowed.
*
@ -273,19 +300,23 @@ static struct property *dup_and_fixup_symbol_prop(
* invalid @overlay.
*/
static int add_changeset_property(struct overlay_changeset *ovcs,
struct device_node *target_node,
struct property *overlay_prop,
struct target *target, struct property *overlay_prop,
bool is_symbols_prop)
{
struct property *new_prop = NULL, *prop;
int ret = 0;
bool check_for_non_overlay_node = false;
prop = of_find_property(target_node, overlay_prop->name, NULL);
if (target->in_livetree)
if (!of_prop_cmp(overlay_prop->name, "name") ||
!of_prop_cmp(overlay_prop->name, "phandle") ||
!of_prop_cmp(overlay_prop->name, "linux,phandle"))
return 0;
if (!of_prop_cmp(overlay_prop->name, "name") ||
!of_prop_cmp(overlay_prop->name, "phandle") ||
!of_prop_cmp(overlay_prop->name, "linux,phandle"))
return 0;
if (target->in_livetree)
prop = of_find_property(target->np, overlay_prop->name, NULL);
else
prop = NULL;
if (is_symbols_prop) {
if (prop)
@ -298,12 +329,36 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
if (!new_prop)
return -ENOMEM;
if (!prop)
ret = of_changeset_add_property(&ovcs->cset, target_node,
if (!prop) {
check_for_non_overlay_node = true;
if (!target->in_livetree) {
new_prop->next = target->np->deadprops;
target->np->deadprops = new_prop;
}
ret = of_changeset_add_property(&ovcs->cset, target->np,
new_prop);
else
ret = of_changeset_update_property(&ovcs->cset, target_node,
} else if (!of_prop_cmp(prop->name, "#address-cells")) {
if (!of_prop_val_eq(prop, new_prop)) {
pr_err("ERROR: changing value of #address-cells is not allowed in %pOF\n",
target->np);
ret = -EINVAL;
}
} else if (!of_prop_cmp(prop->name, "#size-cells")) {
if (!of_prop_val_eq(prop, new_prop)) {
pr_err("ERROR: changing value of #size-cells is not allowed in %pOF\n",
target->np);
ret = -EINVAL;
}
} else {
check_for_non_overlay_node = true;
ret = of_changeset_update_property(&ovcs->cset, target->np,
new_prop);
}
if (check_for_non_overlay_node &&
!of_node_check_flag(target->np, OF_OVERLAY))
pr_err("WARNING: memory leak will occur if overlay removed, property: %pOF/%s\n",
target->np, new_prop->name);
if (ret) {
kfree(new_prop->name);
@ -315,14 +370,14 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
/**
* add_changeset_node() - add @node (and children) to overlay changeset
* @ovcs: overlay changeset
* @target_node: where to place @node in live tree
* @node: node from within overlay device tree fragment
* @ovcs: overlay changeset
* @target: where @node will be placed in live tree or changeset
* @node: node from within overlay device tree fragment
*
* If @node does not already exist in @target_node, add changeset entry
* to add @node in @target_node.
* If @node does not already exist in @target, add changeset entry
* to add @node in @target.
*
* If @node already exists in @target_node, and the existing node has
* If @node already exists in @target, and the existing node has
* a phandle, the overlay node is not allowed to have a phandle.
*
* If @node has child nodes, add the children recursively via
@ -342,49 +397,65 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
* a live devicetree created from Open Firmware.
*
* NOTE_2: Multiple mods of created nodes not supported.
* If more than one fragment contains a node that does not already exist
* in the live tree, then for each fragment of_changeset_attach_node()
* will add a changeset entry to add the node. When the changeset is
* applied, __of_attach_node() will attach the node twice (once for
* each fragment). At this point the device tree will be corrupted.
*
* TODO: add integrity check to ensure that multiple fragments do not
* create the same node.
*
* Returns 0 on success, -ENOMEM if memory allocation failure, or -EINVAL if
* invalid @overlay.
*/
static int add_changeset_node(struct overlay_changeset *ovcs,
struct device_node *target_node, struct device_node *node)
struct target *target, struct device_node *node)
{
const char *node_kbasename;
const __be32 *phandle;
struct device_node *tchild;
int ret = 0;
struct target target_child;
int ret = 0, size;
node_kbasename = kbasename(node->full_name);
for_each_child_of_node(target_node, tchild)
for_each_child_of_node(target->np, tchild)
if (!of_node_cmp(node_kbasename, kbasename(tchild->full_name)))
break;
if (!tchild) {
tchild = __of_node_dup(node, node_kbasename);
tchild = __of_node_dup(NULL, node_kbasename);
if (!tchild)
return -ENOMEM;
tchild->parent = target_node;
tchild->parent = target->np;
tchild->name = __of_get_property(node, "name", NULL);
tchild->type = __of_get_property(node, "device_type", NULL);
if (!tchild->name)
tchild->name = "<NULL>";
if (!tchild->type)
tchild->type = "<NULL>";
/* ignore obsolete "linux,phandle" */
phandle = __of_get_property(node, "phandle", &size);
if (phandle && (size == 4))
tchild->phandle = be32_to_cpup(phandle);
of_node_set_flag(tchild, OF_OVERLAY);
ret = of_changeset_attach_node(&ovcs->cset, tchild);
if (ret)
return ret;
return build_changeset_next_level(ovcs, tchild, node);
target_child.np = tchild;
target_child.in_livetree = false;
ret = build_changeset_next_level(ovcs, &target_child, node);
of_node_put(tchild);
return ret;
}
if (node->phandle && tchild->phandle)
if (node->phandle && tchild->phandle) {
ret = -EINVAL;
else
ret = build_changeset_next_level(ovcs, tchild, node);
} else {
target_child.np = tchild;
target_child.in_livetree = target->in_livetree;
ret = build_changeset_next_level(ovcs, &target_child, node);
}
of_node_put(tchild);
return ret;
@ -393,7 +464,7 @@ static int add_changeset_node(struct overlay_changeset *ovcs,
/**
* build_changeset_next_level() - add level of overlay changeset
* @ovcs: overlay changeset
* @target_node: where to place @overlay_node in live tree
* @target: where to place @overlay_node in live tree
* @overlay_node: node from within an overlay device tree fragment
*
* Add the properties (if any) and nodes (if any) from @overlay_node to the
@ -406,27 +477,26 @@ static int add_changeset_node(struct overlay_changeset *ovcs,
* invalid @overlay_node.
*/
static int build_changeset_next_level(struct overlay_changeset *ovcs,
struct device_node *target_node,
const struct device_node *overlay_node)
struct target *target, const struct device_node *overlay_node)
{
struct device_node *child;
struct property *prop;
int ret;
for_each_property_of_node(overlay_node, prop) {
ret = add_changeset_property(ovcs, target_node, prop, 0);
ret = add_changeset_property(ovcs, target, prop, 0);
if (ret) {
pr_debug("Failed to apply prop @%pOF/%s, err=%d\n",
target_node, prop->name, ret);
target->np, prop->name, ret);
return ret;
}
}
for_each_child_of_node(overlay_node, child) {
ret = add_changeset_node(ovcs, target_node, child);
ret = add_changeset_node(ovcs, target, child);
if (ret) {
pr_debug("Failed to apply node @%pOF/%pOFn, err=%d\n",
target_node, child, ret);
target->np, child, ret);
of_node_put(child);
return ret;
}
@ -439,17 +509,17 @@ static int build_changeset_next_level(struct overlay_changeset *ovcs,
* Add the properties from __overlay__ node to the @ovcs->cset changeset.
*/
static int build_changeset_symbols_node(struct overlay_changeset *ovcs,
struct device_node *target_node,
struct target *target,
const struct device_node *overlay_symbols_node)
{
struct property *prop;
int ret;
for_each_property_of_node(overlay_symbols_node, prop) {
ret = add_changeset_property(ovcs, target_node, prop, 1);
ret = add_changeset_property(ovcs, target, prop, 1);
if (ret) {
pr_debug("Failed to apply prop @%pOF/%s, err=%d\n",
target_node, prop->name, ret);
pr_debug("Failed to apply symbols prop @%pOF/%s, err=%d\n",
target->np, prop->name, ret);
return ret;
}
}
@ -457,6 +527,98 @@ static int build_changeset_symbols_node(struct overlay_changeset *ovcs,
return 0;
}
static int find_dup_cset_node_entry(struct overlay_changeset *ovcs,
struct of_changeset_entry *ce_1)
{
struct of_changeset_entry *ce_2;
char *fn_1, *fn_2;
int node_path_match;
if (ce_1->action != OF_RECONFIG_ATTACH_NODE &&
ce_1->action != OF_RECONFIG_DETACH_NODE)
return 0;
ce_2 = ce_1;
list_for_each_entry_continue(ce_2, &ovcs->cset.entries, node) {
if ((ce_2->action != OF_RECONFIG_ATTACH_NODE &&
ce_2->action != OF_RECONFIG_DETACH_NODE) ||
of_node_cmp(ce_1->np->full_name, ce_2->np->full_name))
continue;
fn_1 = kasprintf(GFP_KERNEL, "%pOF", ce_1->np);
fn_2 = kasprintf(GFP_KERNEL, "%pOF", ce_2->np);
node_path_match = !strcmp(fn_1, fn_2);
kfree(fn_1);
kfree(fn_2);
if (node_path_match) {
pr_err("ERROR: multiple fragments add and/or delete node %pOF\n",
ce_1->np);
return -EINVAL;
}
}
return 0;
}
static int find_dup_cset_prop(struct overlay_changeset *ovcs,
struct of_changeset_entry *ce_1)
{
struct of_changeset_entry *ce_2;
char *fn_1, *fn_2;
int node_path_match;
if (ce_1->action != OF_RECONFIG_ADD_PROPERTY &&
ce_1->action != OF_RECONFIG_REMOVE_PROPERTY &&
ce_1->action != OF_RECONFIG_UPDATE_PROPERTY)
return 0;
ce_2 = ce_1;
list_for_each_entry_continue(ce_2, &ovcs->cset.entries, node) {
if ((ce_2->action != OF_RECONFIG_ADD_PROPERTY &&
ce_2->action != OF_RECONFIG_REMOVE_PROPERTY &&
ce_2->action != OF_RECONFIG_UPDATE_PROPERTY) ||
of_node_cmp(ce_1->np->full_name, ce_2->np->full_name))
continue;
fn_1 = kasprintf(GFP_KERNEL, "%pOF", ce_1->np);
fn_2 = kasprintf(GFP_KERNEL, "%pOF", ce_2->np);
node_path_match = !strcmp(fn_1, fn_2);
kfree(fn_1);
kfree(fn_2);
if (node_path_match &&
!of_prop_cmp(ce_1->prop->name, ce_2->prop->name)) {
pr_err("ERROR: multiple fragments add, update, and/or delete property %pOF/%s\n",
ce_1->np, ce_1->prop->name);
return -EINVAL;
}
}
return 0;
}
/**
* changeset_dup_entry_check() - check for duplicate entries
* @ovcs: Overlay changeset
*
* Check changeset @ovcs->cset for multiple {add or delete} node entries for
* the same node or duplicate {add, delete, or update} properties entries
* for the same property.
*
* Returns 0 on success, or -EINVAL if duplicate changeset entry found.
*/
static int changeset_dup_entry_check(struct overlay_changeset *ovcs)
{
struct of_changeset_entry *ce_1;
int dup_entry = 0;
list_for_each_entry(ce_1, &ovcs->cset.entries, node) {
dup_entry |= find_dup_cset_node_entry(ovcs, ce_1);
dup_entry |= find_dup_cset_prop(ovcs, ce_1);
}
return dup_entry ? -EINVAL : 0;
}
/**
* build_changeset() - populate overlay changeset in @ovcs from @ovcs->fragments
* @ovcs: Overlay changeset
@ -472,6 +634,7 @@ static int build_changeset_symbols_node(struct overlay_changeset *ovcs,
static int build_changeset(struct overlay_changeset *ovcs)
{
struct fragment *fragment;
struct target target;
int fragments_count, i, ret;
/*
@ -486,25 +649,32 @@ static int build_changeset(struct overlay_changeset *ovcs)
for (i = 0; i < fragments_count; i++) {
fragment = &ovcs->fragments[i];
ret = build_changeset_next_level(ovcs, fragment->target,
target.np = fragment->target;
target.in_livetree = true;
ret = build_changeset_next_level(ovcs, &target,
fragment->overlay);
if (ret) {
pr_debug("apply failed '%pOF'\n", fragment->target);
pr_debug("fragment apply failed '%pOF'\n",
fragment->target);
return ret;
}
}
if (ovcs->symbols_fragment) {
fragment = &ovcs->fragments[ovcs->count - 1];
ret = build_changeset_symbols_node(ovcs, fragment->target,
target.np = fragment->target;
target.in_livetree = true;
ret = build_changeset_symbols_node(ovcs, &target,
fragment->overlay);
if (ret) {
pr_debug("apply failed '%pOF'\n", fragment->target);
pr_debug("symbols fragment apply failed '%pOF'\n",
fragment->target);
return ret;
}
}
return 0;
return changeset_dup_entry_check(ovcs);
}
/*
@ -514,7 +684,7 @@ static int build_changeset(struct overlay_changeset *ovcs)
* 1) "target" property containing the phandle of the target
* 2) "target-path" property containing the path of the target
*/
static struct device_node *find_target_node(struct device_node *info_node)
static struct device_node *find_target(struct device_node *info_node)
{
struct device_node *node;
const char *path;
@ -620,7 +790,7 @@ static int init_overlay_changeset(struct overlay_changeset *ovcs,
fragment = &fragments[cnt];
fragment->overlay = overlay_node;
fragment->target = find_target_node(node);
fragment->target = find_target(node);
if (!fragment->target) {
of_node_put(fragment->overlay);
ret = -EINVAL;
@ -808,7 +978,7 @@ static int of_overlay_apply(const void *fdt, struct device_node *tree,
ret = __of_changeset_apply_notify(&ovcs->cset);
if (ret)
pr_err("overlay changeset entry notify error %d\n", ret);
pr_err("overlay apply changeset entry notify error %d\n", ret);
/* notify failure is not fatal, continue */
list_add_tail(&ovcs->ovcs_list, &ovcs_list);
@ -1067,7 +1237,7 @@ int of_overlay_remove(int *ovcs_id)
ret = __of_changeset_revert_notify(&ovcs->cset);
if (ret)
pr_err("overlay changeset entry notify error %d\n", ret);
pr_err("overlay remove changeset entry notify error %d\n", ret);
/* notify failure is not fatal, continue */
*ovcs_id = 0;

5
drivers/of/pdt.c
View File

@ -21,8 +21,6 @@
static struct of_pdt_ops *of_pdt_prom_ops __initdata;
void __initdata (*of_pdt_build_more)(struct device_node *dp);
#if defined(CONFIG_SPARC)
unsigned int of_pdt_unique_id __initdata;
@ -189,9 +187,6 @@ static struct device_node * __init of_pdt_build_tree(struct device_node *parent,
dp->child = of_pdt_build_tree(dp, of_pdt_prom_ops->getchild(node));
if (of_pdt_build_more)
of_pdt_build_more(dp);
node = of_pdt_prom_ops->getsibling(node);
}

10
drivers/of/property.c
View File

@ -571,7 +571,7 @@ struct device_node *of_graph_get_port_by_id(struct device_node *parent, u32 id)
for_each_child_of_node(parent, port) {
u32 port_id = 0;
if (of_node_cmp(port->name, "port") != 0)
if (!of_node_name_eq(port, "port"))
continue;
of_property_read_u32(port, "reg", &port_id);
if (id == port_id)
@ -646,7 +646,7 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
port = of_get_next_child(parent, port);
if (!port)
return NULL;
} while (of_node_cmp(port->name, "port"));
} while (!of_node_name_eq(port, "port"));
}
}
EXPORT_SYMBOL(of_graph_get_next_endpoint);
@ -715,7 +715,7 @@ struct device_node *of_graph_get_port_parent(struct device_node *node)
/* Walk 3 levels up only if there is 'ports' node. */
for (depth = 3; depth && node; depth--) {
node = of_get_next_parent(node);
if (depth == 2 && of_node_cmp(node->name, "ports"))
if (depth == 2 && !of_node_name_eq(node, "ports"))
break;
}
return node;
@ -893,7 +893,7 @@ of_fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
struct device_node *child;
for_each_available_child_of_node(node, child)
if (!of_node_cmp(child->name, childname))
if (of_node_name_eq(child, childname))
return of_fwnode_handle(child);
return NULL;
@ -955,7 +955,7 @@ of_fwnode_graph_get_port_parent(struct fwnode_handle *fwnode)
return NULL;
/* Is this the "ports" node? If not, it's the port parent. */
if (of_node_cmp(np->name, "ports"))
if (!of_node_name_eq(np, "ports"))
return of_fwnode_handle(np);
return of_fwnode_handle(of_get_next_parent(np));

4
drivers/of/resolver.c
View File

@ -281,7 +281,7 @@ int of_resolve_phandles(struct device_node *overlay)
adjust_overlay_phandles(overlay, phandle_delta);
for_each_child_of_node(overlay, local_fixups)
if (!of_node_cmp(local_fixups->name, "__local_fixups__"))
if (of_node_name_eq(local_fixups, "__local_fixups__"))
break;
err = adjust_local_phandle_references(local_fixups, overlay, phandle_delta);
@ -291,7 +291,7 @@ int of_resolve_phandles(struct device_node *overlay)
overlay_fixups = NULL;
for_each_child_of_node(overlay, child) {
if (!of_node_cmp(child->name, "__fixups__"))
if (of_node_name_eq(child, "__fixups__"))
overlay_fixups = child;
}

2
drivers/of/unittest-data/Makefile
View File

@ -17,6 +17,8 @@ obj-$(CONFIG_OF_OVERLAY) += overlay.dtb.o \
overlay_12.dtb.o \
overlay_13.dtb.o \
overlay_15.dtb.o \
overlay_bad_add_dup_node.dtb.o \
overlay_bad_add_dup_prop.dtb.o \
overlay_bad_phandle.dtb.o \
overlay_bad_symbol.dtb.o \
overlay_base.dtb.o

28
drivers/of/unittest-data/overlay_bad_add_dup_node.dts Normal file
View File

@ -0,0 +1,28 @@
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
/plugin/;
/*
* &electric_1/motor-1 and &spin_ctrl_1 are the same node:
* /testcase-data-2/substation@100/motor-1
*
* Thus the new node "controller" in each fragment will
* result in an attempt to add the same node twice.
* This will result in an error and the overlay apply
* will fail.
*/
&electric_1 {
motor-1 {
controller {
power_bus = < 0x1 0x2 >;
};
};
};
&spin_ctrl_1 {
controller {
power_bus_emergency = < 0x101 0x102 >;
};
};

24
drivers/of/unittest-data/overlay_bad_add_dup_prop.dts Normal file
View File

@ -0,0 +1,24 @@
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
/plugin/;
/*
* &electric_1/motor-1 and &spin_ctrl_1 are the same node:
* /testcase-data-2/substation@100/motor-1
*
* Thus the property "rpm_avail" in each fragment will
* result in an attempt to update the same property twice.
* This will result in an error and the overlay apply
* will fail.
*/
&electric_1 {
motor-1 {
rpm_avail = < 100 >;
};
};
&spin_ctrl_1 {
rpm_avail = < 100 200 >;
};

1
drivers/of/unittest-data/overlay_base.dts
View File

@ -30,6 +30,7 @@ hvac_1: hvac-medium-1 {
spin_ctrl_1: motor-1 {
compatible = "ot,ferris-wheel-motor";
spin = "clockwise";
rpm_avail = < 50 >;
};
spin_ctrl_2: motor-8 {

100
drivers/of/unittest.c
View File

@ -379,6 +379,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
for (i = 0; i < 8; i++) {
bool passed = true;
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list",
"#phandle-cells", i, &args);
@ -432,6 +433,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
}
/* Check for missing list property */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-missing",
"#phandle-cells", 0, &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
@ -440,6 +442,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
/* Check for missing cells property */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list",
"#phandle-cells-missing", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@ -448,6 +451,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for bad phandle in list */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
"#phandle-cells", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@ -456,6 +460,7 @@ static void __init of_unittest_parse_phandle_with_args(void)
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for incorrectly formed argument list */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
"#phandle-cells", 1, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@ -506,6 +511,7 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
for (i = 0; i < 8; i++) {
bool passed = true;
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list",
"phandle", i, &args);
@ -563,21 +569,25 @@ static void __init of_unittest_parse_phandle_with_args_map(void)
}
/* Check for missing list property */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-missing",
"phandle", 0, &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
/* Check for missing cells,map,mask property */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list",
"phandle-missing", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for bad phandle in list */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle",
"phandle", 0, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
/* Check for incorrectly formed argument list */
memset(&args, 0, sizeof(args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args",
"phandle", 1, &args);
unittest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
@ -787,7 +797,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
args.args_count = 0;
memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
passed &= !rc;
@ -808,7 +818,7 @@ static void __init of_unittest_parse_interrupts(void)
for (i = 0; i < 4; i++) {
bool passed = true;
args.args_count = 0;
memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
@ -864,6 +874,7 @@ static void __init of_unittest_parse_interrupts_extended(void)
for (i = 0; i < 7; i++) {
bool passed = true;
memset(&args, 0, sizeof(args));
rc = of_irq_parse_one(np, i, &args);
/* Test the values from tests-phandle.dtsi */
@ -1071,20 +1082,44 @@ static void __init of_unittest_platform_populate(void)
* of np into dup node (present in live tree) and
* updates parent of children of np to dup.
*
* @np: node already present in live tree
* @np: node whose properties are being added to the live tree
* @dup: node present in live tree to be updated
*/
static void update_node_properties(struct device_node *np,
struct device_node *dup)
{
struct property *prop;
struct property *save_next;
struct device_node *child;
for_each_property_of_node(np, prop)
of_add_property(dup, prop);
int ret;
for_each_child_of_node(np, child)
child->parent = dup;
/*
* "unittest internal error: unable to add testdata property"
*
* If this message reports a property in node '/__symbols__' then
* the respective unittest overlay contains a label that has the
* same name as a label in the live devicetree. The label will
* be in the live devicetree only if the devicetree source was
* compiled with the '-@' option. If you encounter this error,
* please consider renaming __all__ of the labels in the unittest
* overlay dts files with an odd prefix that is unlikely to be
* used in a real devicetree.
*/
/*
* open code for_each_property_of_node() because of_add_property()
* sets prop->next to NULL
*/
for (prop = np->properties; prop != NULL; prop = save_next) {
save_next = prop->next;
ret = of_add_property(dup, prop);
if (ret)
pr_err("unittest internal error: unable to add testdata property %pOF/%s",
np, prop->name);
}
}
/**
@ -1093,18 +1128,23 @@ static void update_node_properties(struct device_node *np,
*
* @np: Node to attach to live tree
*/
static int attach_node_and_children(struct device_node *np)
static void attach_node_and_children(struct device_node *np)
{
struct device_node *next, *dup, *child;
unsigned long flags;
const char *full_name;
full_name = kasprintf(GFP_KERNEL, "%pOF", np);
if (!strcmp(full_name, "/__local_fixups__") ||
!strcmp(full_name, "/__fixups__"))
return;
dup = of_find_node_by_path(full_name);
kfree(full_name);
if (dup) {
update_node_properties(np, dup);
return 0;
return;
}
child = np->child;
@ -1125,8 +1165,6 @@ static int attach_node_and_children(struct device_node *np)
attach_node_and_children(child);
child = next;
}
return 0;
}
/**
@ -1433,8 +1471,7 @@ static void of_unittest_destroy_tracked_overlays(void)
} while (defers > 0);
}
static int __init of_unittest_apply_overlay(int overlay_nr, int unittest_nr,
int *overlay_id)
static int __init of_unittest_apply_overlay(int overlay_nr, int *overlay_id)
{
const char *overlay_name;
@ -1467,7 +1504,7 @@ static int __init of_unittest_apply_overlay_check(int overlay_nr,
}
ovcs_id = 0;
ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ovcs_id);
ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
if (ret != 0) {
/* of_unittest_apply_overlay already called unittest() */
return ret;
@ -1503,7 +1540,7 @@ static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
/* apply the overlay */
ovcs_id = 0;
ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, &ovcs_id);
ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
if (ret != 0) {
/* of_unittest_apply_overlay already called unittest() */
return ret;
@ -2161,10 +2198,12 @@ OVERLAY_INFO_EXTERN(overlay_11);
OVERLAY_INFO_EXTERN(overlay_12);
OVERLAY_INFO_EXTERN(overlay_13);
OVERLAY_INFO_EXTERN(overlay_15);
OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
OVERLAY_INFO_EXTERN(overlay_bad_phandle);
OVERLAY_INFO_EXTERN(overlay_bad_symbol);
/* order of entries is hard-coded into users of overlays[] */
/* entries found by name */
static struct overlay_info overlays[] = {
OVERLAY_INFO(overlay_base, -9999),
OVERLAY_INFO(overlay, 0),
@ -2183,9 +2222,12 @@ static struct overlay_info overlays[] = {
OVERLAY_INFO(overlay_12, 0),
OVERLAY_INFO(overlay_13, 0),
OVERLAY_INFO(overlay_15, 0),
OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL),
OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL),
OVERLAY_INFO(overlay_bad_phandle, -EINVAL),
OVERLAY_INFO(overlay_bad_symbol, -EINVAL),
{}
/* end marker */
{.dtb_begin = NULL, .dtb_end = NULL, .expected_result = 0, .name = NULL}
};
static struct device_node *overlay_base_root;
@ -2215,6 +2257,19 @@ void __init unittest_unflatten_overlay_base(void)
u32 data_size;
void *new_fdt;
u32 size;
int found = 0;
const char *overlay_name = "overlay_base";
for (info = overlays; info && info->name; info++) {
if (!strcmp(overlay_name, info->name)) {
found = 1;
break;
}
}
if (!found) {
pr_err("no overlay data for %s\n", overlay_name);
return;
}
info = &overlays[0];
@ -2262,11 +2317,10 @@ static int __init overlay_data_apply(const char *overlay_name, int *overlay_id)
{
struct overlay_info *info;
int found = 0;
int k;
int ret;
u32 size;
for (k = 0, info = overlays; info && info->name; info++, k++) {
for (info = overlays; info && info->name; info++) {
if (!strcmp(overlay_name, info->name)) {
found = 1;
break;
@ -2339,7 +2393,7 @@ static __init void of_unittest_overlay_high_level(void)
*/
pprev = &overlay_base_root->child;
for (np = overlay_base_root->child; np; np = np->sibling) {
if (!of_node_cmp(np->name, "__local_fixups__")) {
if (of_node_name_eq(np, "__local_fixups__")) {
*pprev = np->sibling;
break;
}
@ -2352,7 +2406,7 @@ static __init void of_unittest_overlay_high_level(void)
/* will have to graft properties from node into live tree */
pprev = &overlay_base_root->child;
for (np = overlay_base_root->child; np; np = np->sibling) {
if (!of_node_cmp(np->name, "__symbols__")) {
if (of_node_name_eq(np, "__symbols__")) {
overlay_base_symbols = np;
*pprev = np->sibling;
break;
@ -2430,6 +2484,12 @@ static __init void of_unittest_overlay_high_level(void)
unittest(overlay_data_apply("overlay", NULL),
"Adding overlay 'overlay' failed\n");
unittest(overlay_data_apply("overlay_bad_add_dup_node", NULL),
"Adding overlay 'overlay_bad_add_dup_node' failed\n");
unittest(overlay_data_apply("overlay_bad_add_dup_prop", NULL),
"Adding overlay 'overlay_bad_add_dup_prop' failed\n");
unittest(overlay_data_apply("overlay_bad_phandle", NULL),
"Adding overlay 'overlay_bad_phandle' failed\n");

2
drivers/power/reset/axxia-reset.c
View File

@ -65,7 +65,7 @@ static int axxia_reset_probe(struct platform_device *pdev)
syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
if (IS_ERR(syscon)) {
pr_err("%s: syscon lookup failed\n", dev->of_node->name);
pr_err("%pOFn: syscon lookup failed\n", dev->of_node);
return PTR_ERR(syscon);
}

2
drivers/video/backlight/pm8941-wled.c
View File

@ -330,7 +330,7 @@ static int pm8941_wled_configure(struct pm8941_wled *wled, struct device *dev)
rc = of_property_read_string(dev->of_node, "label", &wled->name);
if (rc)
wled->name = dev->of_node->name;
wled->name = devm_kasprintf(dev, GFP_KERNEL, "%pOFn", dev->of_node);
*cfg = pm8941_wled_config_defaults;
for (i = 0; i < ARRAY_SIZE(u32_opts); ++i) {

3
include/linux/initrd.h
View File

@ -21,4 +21,7 @@ extern int initrd_below_start_ok;
extern unsigned long initrd_start, initrd_end;
extern void free_initrd_mem(unsigned long, unsigned long);
extern phys_addr_t phys_initrd_start;
extern unsigned long phys_initrd_size;
extern unsigned int real_root_dev;

21
include/linux/of.h
View File

@ -137,11 +137,16 @@ extern struct device_node *of_aliases;
extern struct device_node *of_stdout;
extern raw_spinlock_t devtree_lock;
/* flag descriptions (need to be visible even when !CONFIG_OF) */
#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
#define OF_DETACHED 2 /* node has been detached from the device tree */
#define OF_POPULATED 3 /* device already created for the node */
#define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */
/*
* struct device_node flag descriptions
* (need to be visible even when !CONFIG_OF)
*/
#define OF_DYNAMIC 1 /* (and properties) allocated via kmalloc */
#define OF_DETACHED 2 /* detached from the device tree */
#define OF_POPULATED 3 /* device already created */
#define OF_POPULATED_BUS 4 /* platform bus created for children */
#define OF_OVERLAY 5 /* allocated for an overlay */
#define OF_OVERLAY_FREE_CSET 6 /* in overlay cset being freed */
#define OF_BAD_ADDR ((u64)-1)
@ -984,6 +989,12 @@ static inline int of_map_rid(struct device_node *np, u32 rid,
#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
#endif
static inline int of_prop_val_eq(struct property *p1, struct property *p2)
{
return p1->length == p2->length &&
!memcmp(p1->value, p2->value, (size_t)p1->length);
}
#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
extern int of_node_to_nid(struct device_node *np);
#else

2
include/linux/of_pdt.h
View File

@ -35,6 +35,4 @@ extern void *prom_early_alloc(unsigned long size);
/* for building the device tree */
extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops);
extern void (*of_pdt_build_more)(struct device_node *dp);
#endif /* _LINUX_OF_PDT_H */

20
init/do_mounts_initrd.c
View File

@ -16,6 +16,9 @@ int initrd_below_start_ok;
unsigned int real_root_dev; /* do_proc_dointvec cannot handle kdev_t */
static int __initdata mount_initrd = 1;
phys_addr_t phys_initrd_start __initdata;
unsigned long phys_initrd_size __initdata;
static int __init no_initrd(char *str)
{
mount_initrd = 0;
@ -24,6 +27,23 @@ static int __init no_initrd(char *str)
__setup("noinitrd", no_initrd);
static int __init early_initrd(char *p)
{
phys_addr_t start;
unsigned long size;
char *endp;
start = memparse(p, &endp);
if (*endp == ',') {
size = memparse(endp + 1, NULL);
phys_initrd_start = start;
phys_initrd_size = size;
}
return 0;
}
early_param("initrd", early_initrd);
static int init_linuxrc(struct subprocess_info *info, struct cred *new)
{
ksys_unshare(CLONE_FS | CLONE_FILES);

26
scripts/Makefile.lib
View File

@ -61,6 +61,11 @@ real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))
extra-y += $(dtb-y)
extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
ifneq ($(CHECK_DTBS),)
extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
endif
# Add subdir path
extra-y := $(addprefix $(obj)/,$(extra-y))
@ -251,7 +256,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-avoid_unnecessary_addr_size \
-Wno-alias_paths \
-Wno-graph_child_address \
-Wno-graph_port \
-Wno-simple_bus_reg \
-Wno-unique_unit_address \
-Wno-pci_device_reg
endif
@ -284,13 +289,28 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
quiet_cmd_dtc = DTC $@
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
$(DTC) -O dtb -o $@ -b 0 \
$(DTC) -O $(2) -o $@ -b 0 \
$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
-d $(depfile).dtc.tmp $(dtc-tmp) ; \
cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
$(call if_changed_dep,dtc)
$(call if_changed_dep,dtc,dtb)
DT_CHECKER ?= dt-validate
DT_BINDING_DIR := Documentation/devicetree/bindings
DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml
quiet_cmd_dtb_check = CHECK $@
cmd_dtb_check = $(DT_CHECKER) -p $(DT_TMP_SCHEMA) $@ ;
define rule_dtc_dt_yaml
$(call cmd_and_fixdep,dtc,yaml) \
$(call echo-cmd,dtb_check) $(cmd_dtb_check)
endef
$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
$(call if_changed_rule,dtc_dt_yaml)
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)

4
scripts/dtc/Makefile
View File

@ -12,6 +12,10 @@ dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
HOST_EXTRACFLAGS := -I$(src)/libfdt
ifeq ($(wildcard /usr/include/yaml.h),)
ifneq ($(CHECK_DTBS),)
$(error dtc needs libyaml for DT schema validation support. \
Install the necessary libyaml development package.)
endif
HOST_EXTRACFLAGS += -DNO_YAML
else
dtc-objs += yamltree.o

75
scripts/dtc/checks.c
View File

@ -19,6 +19,7 @@
*/
#include "dtc.h"
#include "srcpos.h"
#ifdef TRACE_CHECKS
#define TRACE(c, ...) \
@ -78,23 +79,56 @@ static inline void PRINTF(5, 6) check_msg(struct check *c, struct dt_info *dti,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
char *str = NULL;
struct srcpos *pos = NULL;
char *file_str;
if ((c->warn && (quiet < 1))
|| (c->error && (quiet < 2))) {
fprintf(stderr, "%s: %s (%s): ",
strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
(c->error) ? "ERROR" : "Warning", c->name);
if (node) {
fprintf(stderr, "%s", node->fullpath);
if (prop)
fprintf(stderr, ":%s", prop->name);
fputs(": ", stderr);
}
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
if (!(c->warn && (quiet < 1)) && !(c->error && (quiet < 2)))
return;
if (prop && prop->srcpos)
pos = prop->srcpos;
else if (node && node->srcpos)
pos = node->srcpos;
if (pos) {
file_str = srcpos_string(pos);
xasprintf(&str, "%s", file_str);
free(file_str);
} else if (streq(dti->outname, "-")) {
xasprintf(&str, "<stdout>");
} else {
xasprintf(&str, "%s", dti->outname);
}
xasprintf_append(&str, ": %s (%s): ",
(c->error) ? "ERROR" : "Warning", c->name);
if (node) {
if (prop)
xasprintf_append(&str, "%s:%s: ", node->fullpath, prop->name);
else
xasprintf_append(&str, "%s: ", node->fullpath);
}
va_start(ap, fmt);
xavsprintf_append(&str, fmt, ap);
va_end(ap);
xasprintf_append(&str, "\n");
if (!prop && pos) {
pos = node->srcpos;
while (pos->next) {
pos = pos->next;
file_str = srcpos_string(pos);
xasprintf_append(&str, " also defined at %s\n", file_str);
free(file_str);
}
}
fputs(str, stderr);
}
#define FAIL(c, dti, node, ...) \
@ -910,7 +944,7 @@ static bool node_is_compatible(struct node *node, const char *compat)
for (str = prop->val.val, end = str + prop->val.len; str < end;
str += strnlen(str, end - str) + 1) {
if (strprefixeq(str, end - str, compat))
if (streq(str, compat))
return true;
}
return false;
@ -921,7 +955,8 @@ static void check_simple_bus_bridge(struct check *c, struct dt_info *dti, struct
if (node_is_compatible(node, "simple-bus"))
node->bus = &simple_bus;
}
WARNING(simple_bus_bridge, check_simple_bus_bridge, NULL, &addr_size_cells);
WARNING(simple_bus_bridge, check_simple_bus_bridge, NULL,
&addr_size_cells, &compatible_is_string_list);
static void check_simple_bus_reg(struct check *c, struct dt_info *dti, struct node *node)
{
@ -1035,6 +1070,7 @@ static const struct bus_type spi_bus = {
static void check_spi_bus_bridge(struct check *c, struct dt_info *dti, struct node *node)
{
int spi_addr_cells = 1;
if (strprefixeq(node->name, node->basenamelen, "spi")) {
node->bus = &spi_bus;
@ -1063,7 +1099,9 @@ static void check_spi_bus_bridge(struct check *c, struct dt_info *dti, struct no
if (node->bus != &spi_bus || !node->children)
return;
if (node_addr_cells(node) != 1)
if (get_property(node, "spi-slave"))
spi_addr_cells = 0;
if (node_addr_cells(node) != spi_addr_cells)
FAIL(c, dti, node, "incorrect #address-cells for SPI bus");
if (node_size_cells(node) != 0)
FAIL(c, dti, node, "incorrect #size-cells for SPI bus");
@ -1082,6 +1120,9 @@ static void check_spi_bus_reg(struct check *c, struct dt_info *dti, struct node
if (!node->parent || (node->parent->bus != &spi_bus))
return;
if (get_property(node->parent, "spi-slave"))
return;
prop = get_property(node, "reg");
if (prop)
cells = (cell_t *)prop->val.val;

4
scripts/dtc/dtc-lexer.l
View File

@ -213,14 +213,14 @@ static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
<*>\&{LABEL} { /* label reference */
DPRINT("Ref: %s\n", yytext+1);
yylval.labelref = xstrdup(yytext+1);
return DT_REF;
return DT_LABEL_REF;
}
<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
yytext[yyleng-1] = '\0';
DPRINT("Ref: %s\n", yytext+2);
yylval.labelref = xstrdup(yytext+2);
return DT_REF;
return DT_PATH_REF;
}
<BYTESTRING>[0-9a-fA-F]{2} {

52
scripts/dtc/dtc-parser.y
View File

@ -70,7 +70,8 @@ extern bool treesource_error;
%token <byte> DT_BYTE
%token <data> DT_STRING
%token <labelref> DT_LABEL
%token <labelref> DT_REF
%token <labelref> DT_LABEL_REF
%token <labelref> DT_PATH_REF
%token DT_INCBIN
%type <data> propdata
@ -83,6 +84,7 @@ extern bool treesource_error;
%type <data> bytestring
%type <prop> propdef
%type <proplist> proplist
%type <labelref> dt_ref
%type <node> devicetree
%type <node> nodedef
@ -158,6 +160,8 @@ memreserve:
}
;
dt_ref: DT_LABEL_REF | DT_PATH_REF;
devicetree:
'/' nodedef
{
@ -167,7 +171,7 @@ devicetree:
{
$$ = merge_nodes($1, $3);
}
| DT_REF nodedef
| dt_ref nodedef
{
/*
* We rely on the rule being always:
@ -176,9 +180,12 @@ devicetree:
*/
if (!($<flags>-1 & DTSF_PLUGIN))
ERROR(&@2, "Label or path %s not found", $1);
$$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
$$ = add_orphan_node(
name_node(build_node(NULL, NULL, NULL),
""),
$2, $1);
}
| devicetree DT_LABEL DT_REF nodedef
| devicetree DT_LABEL dt_ref nodedef
{
struct node *target = get_node_by_ref($1, $3);
@ -189,7 +196,7 @@ devicetree:
ERROR(&@3, "Label or path %s not found", $3);
$$ = $1;
}
| devicetree DT_REF nodedef
| devicetree DT_PATH_REF nodedef
{
/*
* We rely on the rule being always:
@ -208,7 +215,26 @@ devicetree:
}
$$ = $1;
}
| devicetree DT_DEL_NODE DT_REF ';'
| devicetree DT_LABEL_REF nodedef
{
struct node *target = get_node_by_ref($1, $2);
if (target) {
merge_nodes(target, $3);
} else {
/*
* We rely on the rule being always:
* versioninfo plugindecl memreserves devicetree
* so $-1 is what we want (plugindecl)
*/
if ($<flags>-1 & DTSF_PLUGIN)
add_orphan_node($1, $3, $2);
else
ERROR(&@2, "Label or path %s not found", $2);
}
$$ = $1;
}
| devicetree DT_DEL_NODE dt_ref ';'
{
struct node *target = get_node_by_ref($1, $3);
@ -220,7 +246,7 @@ devicetree:
$$ = $1;
}
| devicetree DT_OMIT_NO_REF DT_REF ';'
| devicetree DT_OMIT_NO_REF dt_ref ';'
{
struct node *target = get_node_by_ref($1, $3);
@ -237,7 +263,7 @@ devicetree:
nodedef:
'{' proplist subnodes '}' ';'
{
$$ = build_node($2, $3);
$$ = build_node($2, $3, &@$);
}
;
@ -255,11 +281,11 @@ proplist:
propdef:
DT_PROPNODENAME '=' propdata ';'
{
$$ = build_property($1, $3);
$$ = build_property($1, $3, &@$);
}
| DT_PROPNODENAME ';'
{
$$ = build_property($1, empty_data);
$$ = build_property($1, empty_data, &@$);
}
| DT_DEL_PROP DT_PROPNODENAME ';'
{
@ -285,7 +311,7 @@ propdata:
{
$$ = data_merge($1, $3);
}
| propdataprefix DT_REF
| propdataprefix dt_ref
{
$1 = data_add_marker($1, TYPE_STRING, $2);
$$ = data_add_marker($1, REF_PATH, $2);
@ -383,7 +409,7 @@ arrayprefix:
$$.data = data_append_integer($1.data, $2, $1.bits);
}
| arrayprefix DT_REF
| arrayprefix dt_ref
{
uint64_t val = ~0ULL >> (64 - $1.bits);
@ -540,7 +566,7 @@ subnode:
}
| DT_DEL_NODE DT_PROPNODENAME ';'
{
$$ = name_node(build_node_delete(), $2);
$$ = name_node(build_node_delete(&@$), $2);
}
| DT_OMIT_NO_REF subnode
{

11
scripts/dtc/dtc.c
View File

@ -35,6 +35,8 @@ int phandle_format = PHANDLE_EPAPR; /* Use linux,phandle or phandle properties *
int generate_symbols; /* enable symbols & fixup support */
int generate_fixups; /* suppress generation of fixups on symbol support */
int auto_label_aliases; /* auto generate labels -> aliases */
int annotate; /* Level of annotation: 1 for input source location
>1 for full input source location. */
static int is_power_of_2(int x)
{
@ -60,7 +62,7 @@ static void fill_fullpaths(struct node *tree, const char *prefix)
/* Usage related data. */
static const char usage_synopsis[] = "dtc [options] <input file>";
static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@AThv";
static struct option const usage_long_opts[] = {
{"quiet", no_argument, NULL, 'q'},
{"in-format", a_argument, NULL, 'I'},
@ -81,6 +83,7 @@ static struct option const usage_long_opts[] = {
{"error", a_argument, NULL, 'E'},
{"symbols", no_argument, NULL, '@'},
{"auto-alias", no_argument, NULL, 'A'},
{"annotate", no_argument, NULL, 'T'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, no_argument, NULL, 0x0},
@ -117,6 +120,7 @@ static const char * const usage_opts_help[] = {
"\n\tEnable/disable errors (prefix with \"no-\")",
"\n\tEnable generation of symbols",
"\n\tEnable auto-alias of labels",
"\n\tAnnotate output .dts with input source file and line (-T -T for more details)",
"\n\tPrint this help and exit",
"\n\tPrint version and exit",
NULL,
@ -264,6 +268,9 @@ int main(int argc, char *argv[])
case 'A':
auto_label_aliases = 1;
break;
case 'T':
annotate++;
break;
case 'h':
usage(NULL);
@ -302,6 +309,8 @@ int main(int argc, char *argv[])
outform = "dts";
}
}
if (annotate && (!streq(inform, "dts") || !streq(outform, "dts")))
die("--annotate requires -I dts -O dts\n");
if (streq(inform, "dts"))
dti = dt_from_source(arg);
else if (streq(inform, "fs"))

11
scripts/dtc/dtc.h
View File

@ -58,6 +58,7 @@ extern int phandle_format; /* Use linux,phandle or phandle properties */
extern int generate_symbols; /* generate symbols for nodes with labels */
extern int generate_fixups; /* generate fixups */
extern int auto_label_aliases; /* auto generate labels -> aliases */
extern int annotate; /* annotate .dts with input source location */
#define PHANDLE_LEGACY 0x1
#define PHANDLE_EPAPR 0x2
@ -158,6 +159,7 @@ struct property {
struct property *next;
struct label *labels;
struct srcpos *srcpos;
};
struct node {
@ -177,6 +179,7 @@ struct node {
struct label *labels;
const struct bus_type *bus;
struct srcpos *srcpos;
bool omit_if_unused, is_referenced;
};
@ -205,13 +208,15 @@ struct node {
void add_label(struct label **labels, char *label);
void delete_labels(struct label **labels);
struct property *build_property(char *name, struct data val);
struct property *build_property(char *name, struct data val,
struct srcpos *srcpos);
struct property *build_property_delete(char *name);
struct property *chain_property(struct property *first, struct property *list);
struct property *reverse_properties(struct property *first);
struct node *build_node(struct property *proplist, struct node *children);
struct node *build_node_delete(void);
struct node *build_node(struct property *proplist, struct node *children,
struct srcpos *srcpos);
struct node *build_node_delete(struct srcpos *srcpos);
struct node *name_node(struct node *node, char *name);
struct node *omit_node_if_unused(struct node *node);
struct node *reference_node(struct node *node);

Some files were not shown because too many files have changed in this diff Show More