mirror of https://gitee.com/openkylin/linux.git
dt-bindings: bus: Convert Allwinner RSB to a schema
The newer Allwinner SoCs feature a bus designed for the PMIC, similar to I2C called RSB. Let's convert the device tree bindings for that bus over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
parent
e60f1fd252
commit
a28d1b67cf
|
@ -0,0 +1,79 @@
|
|||
# SPDX-License-Identifier: GPL-2.0
|
||||
%YAML 1.2
|
||||
---
|
||||
$id: http://devicetree.org/schemas/bus/allwinner,sun8i-a23-rsb.yaml#
|
||||
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||||
|
||||
title: Allwinner A23 RSB Device Tree Bindings
|
||||
|
||||
maintainers:
|
||||
- Chen-Yu Tsai <wens@csie.org>
|
||||
- Maxime Ripard <maxime.ripard@bootlin.com>
|
||||
|
||||
properties:
|
||||
"#address-cells":
|
||||
const: 1
|
||||
|
||||
"#size-cells":
|
||||
const: 0
|
||||
|
||||
compatible:
|
||||
oneOf:
|
||||
- const: allwinner,sun8i-a23-rsb
|
||||
- items:
|
||||
- const: allwinner,sun8i-a83t-rsb
|
||||
- const: allwinner,sun8i-a23-rsb
|
||||
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
interrupts:
|
||||
maxItems: 1
|
||||
|
||||
clocks:
|
||||
maxItems: 1
|
||||
|
||||
resets:
|
||||
maxItems: 1
|
||||
|
||||
clock-frequency:
|
||||
minimum: 1
|
||||
maximum: 20000000
|
||||
|
||||
patternProperties:
|
||||
"^.*@[0-9a-fA-F]+$":
|
||||
properties:
|
||||
reg:
|
||||
maxItems: 1
|
||||
|
||||
required:
|
||||
- reg
|
||||
|
||||
required:
|
||||
- compatible
|
||||
- reg
|
||||
- interrupts
|
||||
- clocks
|
||||
- resets
|
||||
|
||||
examples:
|
||||
- |
|
||||
rsb@1f03400 {
|
||||
compatible = "allwinner,sun8i-a23-rsb";
|
||||
reg = <0x01f03400 0x400>;
|
||||
interrupts = <0 39 4>;
|
||||
clocks = <&apb0_gates 3>;
|
||||
clock-frequency = <3000000>;
|
||||
resets = <&apb0_rst 3>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
pmic@3e3 {
|
||||
compatible = "...";
|
||||
reg = <0x3e3>;
|
||||
|
||||
/* ... */
|
||||
};
|
||||
};
|
||||
|
||||
additionalProperties: false
|
|
@ -1,47 +0,0 @@
|
|||
Allwinner Reduced Serial Bus (RSB) controller
|
||||
|
||||
The RSB controller found on later Allwinner SoCs is an SMBus like 2 wire
|
||||
serial bus with 1 master and up to 15 slaves. It is represented by a node
|
||||
for the controller itself, and child nodes representing the slave devices.
|
||||
|
||||
Required properties :
|
||||
|
||||
- reg : Offset and length of the register set for the controller.
|
||||
- compatible : Shall be "allwinner,sun8i-a23-rsb".
|
||||
- interrupts : The interrupt line associated to the RSB controller.
|
||||
- clocks : The gate clk associated to the RSB controller.
|
||||
- resets : The reset line associated to the RSB controller.
|
||||
- #address-cells : shall be 1
|
||||
- #size-cells : shall be 0
|
||||
|
||||
Optional properties :
|
||||
|
||||
- clock-frequency : Desired RSB bus clock frequency in Hz. Maximum is 20MHz.
|
||||
If not set this defaults to 3MHz.
|
||||
|
||||
Child nodes:
|
||||
|
||||
An RSB controller node can contain zero or more child nodes representing
|
||||
slave devices on the bus. Child 'reg' properties should contain the slave
|
||||
device's hardware address. The hardware address is hardwired in the device,
|
||||
which can normally be found in the datasheet.
|
||||
|
||||
Example:
|
||||
|
||||
rsb@1f03400 {
|
||||
compatible = "allwinner,sun8i-a23-rsb";
|
||||
reg = <0x01f03400 0x400>;
|
||||
interrupts = <0 39 4>;
|
||||
clocks = <&apb0_gates 3>;
|
||||
clock-frequency = <3000000>;
|
||||
resets = <&apb0_rst 3>;
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
pmic@3e3 {
|
||||
compatible = "...";
|
||||
reg = <0x3e3>;
|
||||
|
||||
/* ... */
|
||||
};
|
||||
};
|
Loading…
Reference in New Issue