Commit Graph

24 Commits

Author SHA1 Message Date
Linus Torvalds 64b1b217f1 ARM: New SoC family support
Two new SoC families are added this time.
 
 Sugaya Taichi submitted support for the Milbeaut SoC family from
 Socionext and explains:
 
  "SC2000 is a SoC of the Milbeaut series. equipped with a DSP optimized for
   computer vision. It also features advanced functionalities such as 360-degree,
   real-time spherical stitching with multi cameras, image stabilization for
   without mechanical gimbals, and rolling shutter correction. More detail is
   below:
   https://www.socionext.com/en/products/assp/milbeaut/SC2000.html"
 
 Interestingly, this one has a history dating back to older chips
 made by Socionext and previously Matsushita/Panasonic based on their
 own mn10300 CPU architecture that was removed from the kernel last year.
 
 Manivannan Sadhasivam adds support for another SoC family, this is the
 Bitmain BM1880 chip used in the Sophon Edge TPU developer board.
 The chip is intended for Deep Learning applications, and comes
 with dual-core Arm Cortex-A53 to run Linux as well as a RISC-V
 microcontroller core to control the tensor unit.
 For the moment, the TPU is not accessible in mainline Linux, so
 we treat it as a generic Arm SoC.
 More information is available at https://www.sophon.ai/
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM new SoC family support from Arnd Bergmann:
 "Two new SoC families are added this time.

  Sugaya Taichi submitted support for the Milbeaut SoC family from
  Socionext and explains:

    "SC2000 is a SoC of the Milbeaut series. equipped with a DSP
     optimized for computer vision. It also features advanced
     functionalities such as 360-degree, real-time spherical stitching
     with multi cameras, image stabilization for without mechanical
     gimbals, and rolling shutter correction. More detail is below:

       https://www.socionext.com/en/products/assp/milbeaut/SC2000.html"

  Interestingly, this one has a history dating back to older chips made
  by Socionext and previously Matsushita/Panasonic based on their own
  mn10300 CPU architecture that was removed from the kernel last year.

  Manivannan Sadhasivam adds support for another SoC family, this is the
  Bitmain BM1880 chip used in the Sophon Edge TPU developer board.

  The chip is intended for Deep Learning applications, and comes with
  dual-core Arm Cortex-A53 to run Linux as well as a RISC-V
  microcontroller core to control the tensor unit. For the moment, the
  TPU is not accessible in mainline Linux, so we treat it as a generic
  Arm SoC.

  More information is available at

       https://www.sophon.ai/"

* tag 'armsoc-newsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: multi_v7_defconfig: add ARCH_MILBEAUT and ARCH_MILBEAUT_M10V
  ARM: configs: Add Milbeaut M10V defconfig
  ARM: dts: milbeaut: Add device tree set for the Milbeaut M10V board
  clocksource/drivers/timer-milbeaut: Introduce timer for Milbeaut SoCs
  dt-bindings: timer: Add Milbeaut M10V timer description
  ARM: milbeaut: Add basic support for Milbeaut m10v SoC
  dt-bindings: Add documentation for Milbeaut SoCs
  dt-bindings: arm: Add SMP enable-method for Milbeaut
  dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram
  MAINTAINERS: Add entry for Bitmain SoC platform
  arm64: dts: bitmain: Add Sophon Egde board support
  arm64: dts: bitmain: Add BM1880 SoC support
  arm64: Add ARCH_BITMAIN platform
  dt-bindings: arm: Document Bitmain BM1880 SoC
2019-03-06 10:15:42 -08:00
Sugaya Taichi 1d0bf7b9d3 dt-bindings: sram: milbeaut: Add binding for Milbeaut smp-sram
The Milbeaut M10V SoC needs a part of sram for smp, so this adds the
M10V sram compatible and binding.

Signed-off-by: Sugaya Taichi <sugaya.taichi@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-03-01 15:18:26 +01:00
Jernej Skrabec 4571a7d814
dt-bindings: sram: sunxi: Add compatible for the H6 SRAM C1
This introduces a new compatible for the H6 SRAM C1 section, that is
compatible with the SRAM C1 section as found on the A10.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2019-01-29 10:07:26 +01:00
Paul Kocialkowski d44d37cb27
dt-bindings: sram: sunxi: Add compatible for the A64 SRAM C1
This introduces a new compatible for the A64 SRAM C1 section, that is
compatible with the SRAM C1 section as found on the A10.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-12-05 12:03:47 +01:00
Paul Kocialkowski ebc0a24d11
dt-bindings: sram: sunxi: Add bindings for the H5 with SRAM C1
This introduces new bindings for the H5 SoC in the SRAM controller.
Because the SRAM layout is different from other SoCs, no backward
compatibility is assumed with any of them.

However, the C1 SRAM section alone looks similar to previous SoCs,
so it is compatible with the initial A10 binding.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-12-05 12:03:43 +01:00
Mesih Kilinc 46d1ec73c1
dt-bindings: sram: Add Allwinner suniv F1C100s
The suniv ARMv5 F1C100s chip has similar sram controller to sun4i A10.
Add compatible string for it.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-12-05 11:58:19 +01:00
Icenowy Zheng 69a8c2452c dt-bindings: sunxi-sram: add binding for Allwinner H6 SRAM C
The Allwinner H6 SoC's DE3 needs the SRAM C section being claimed in the
system controller to work, like A64 DE2.

As H6 and A64 system controller are quite similar, code is reused now,
and the A64 fallback compatible string is added after the H6 compatible
string.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
[fixed typo in compatible string]
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2018-09-12 22:40:26 +08:00
Linus Torvalds f3ea496213 ARM: SoC driver updates
Some of the larger changes this merge window:
  - Removal of drivers for Exynos5440, a Samsung SoC that never saw
    widespread use.
  - Uniphier support for USB3 and SPI reset handling
  - Syste control and SRAM drivers and bindings for Allwinner platforms
  - Qualcomm AOSS (Always-on subsystem) reset controller drivers
  - Raspberry Pi hwmon driver for voltage
  - Mediatek pwrap (pmic) support for MT6797 SoC
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "Some of the larger changes this merge window:

   - Removal of drivers for Exynos5440, a Samsung SoC that never saw
     widespread use.

   - Uniphier support for USB3 and SPI reset handling

   - Syste control and SRAM drivers and bindings for Allwinner platforms

   - Qualcomm AOSS (Always-on subsystem) reset controller drivers

   - Raspberry Pi hwmon driver for voltage

   - Mediatek pwrap (pmic) support for MT6797 SoC"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (52 commits)
  drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests
  soc: fsl: cleanup Kconfig menu
  soc: fsl: dpio: Convert DPIO documentation to .rst
  staging: fsl-mc: Remove remaining files
  staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl
  staging: fsl-dpaa2: eth: move generic FD defines to DPIO
  soc: fsl: qe: gpio: Add qe_gpio_set_multiple
  usb: host: exynos: Remove support for Exynos5440
  clk: samsung: Remove support for Exynos5440
  soc: sunxi: Add the A13, A23 and H3 system control compatibles
  reset: uniphier: add reset control support for SPI
  cpufreq: exynos: Remove support for Exynos5440
  ata: ahci-platform: Remove support for Exynos5440
  soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata
  soc: mediatek: pwrap: add mt6351 driver for mt6797 SoCs
  soc: mediatek: pwrap: add pwrap driver for mt6797 SoCs
  soc: mediatek: pwrap: fix cipher init setting error
  dt-bindings: pwrap: mediatek: add pwrap support for MT6797
  reset: uniphier: add USB3 core reset control
  dt-bindings: reset: uniphier: add USB3 core reset support
  ...
2018-08-23 13:52:46 -07:00
Paul Kocialkowski 0ec201cfe7
dt-bindings: sram: sunxi: Populate valid sections compatibles
This adds a list of valid SRAM sections compatibles for the A13, A20,
A23 and H3 platforms. Per-platform compatibles are introduced for the
SRAM sections of these platforms, with the A10 compatibles also listed
as valid when applicable.

In particular, compatibles for the C1 SRAM section are introduced. Other
SRAMs (C2 and C3 in particular) are left out. They will be added we needed.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
[Maxime: Added the A10 compatible as fallback, not alternatives]
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-07-11 10:55:43 +02:00
Paul Kocialkowski 7d88cd7827
dt-bindings: sram: sunxi: Add A13, A20, A23 and H3 dedicated bindings
This introduces dedicated bindings for the system control blocks found
on the A13, A20, A23 and H3 sunxi platforms.

Since the controllers on the A33 are the very same as those on the A23,
no specific compatible is introduced for it.

These bindings are introduced to allow reflecting the differences that
exist between these controllers, that may become significant to driver
implementations.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
[Maxime: Added A10 fallback compatible for the A20]
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-07-11 10:55:43 +02:00
Paul Kocialkowski 2263dd0ce1
dt-bindings: sram: sunxi: Introduce new A10 binding for system-control
Following-up on the introduction of a new binding for the A64, this
introduces a system-control binding for the A10 as a replacement of
the sram-controller binding.

This change is motivated by consistency with the Allwinner literature,
that mentions system control over SRAM controller. Moreover, the system
control block is sometimes used for more than SRAM (e.g. for muxing
related to the ethernet PHY).

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2018-07-11 10:34:23 +02:00
Fabio Estevam 11ca58727e dt-bindings: sram: Add 'clocks' as an optional property
Some SoCs (like i.MX53) need to specify the SRAM clock in the
device tree via the clocks property.

Add an entry to the optional property section.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2018-07-10 08:08:57 -06:00
Chen-Yu Tsai f412c8d7a2 dt-bindings: sram: Rename A64 SRAM controller compatible
The SRAM mapping controls on Allwinner SoCs is located in a block called
"System Controls". This block also has registers for identifying the SoC,
reading the state of an external boot-related pin, and on some newer SoCs,
glue layer controls for the EMAC Ethernet controller.

The A64 variant compatible is renamed to "allwinner,a64-system-control"
to reflect this. The old A64 compatible is deprecated. So far we haven't
seen any actual use of it.

Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2018-06-19 22:56:23 +08:00
Marco Franchi 48c926cd34 dt-bindings: Remove leading zeros from bindings notation
Improve the binding example by removing all the leading zeros to fix the
following dtc warnings:

Warning (unit_address_format): Node /XXX unit name should not have leading 0s

Converted using the following command:

perl -p -i -e 's/\@0+([0-9a-f])/\@$1/g' `find ./Documentation/devicetree/bindings "*.txt"`

Some unnecessary changes were manually fixed.

Signed-off-by: Marco Franchi <marco.franchi@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2017-11-09 17:05:05 -06:00
Linus Torvalds e90937e756 ARM: arm64: Devicetree updates for v4.14
As usual, device tree updates is the bulk of our material in this merge
 window. This time around, 559 patches affecting both 32- and 64-bit
 platforms.
 
 Changes are too many to list individually, but some of the larger ones:
 
 New platform/SoC support:
 
  - Automotive:
    + Renesas R-Car D3 (R8A77995)
    + TI DT76x
    + MediaTek mt2712e
  - Communication-oriented:
    + Qualcomm IPQ8074
    + Broadcom Stingray
    + Marvell Armada 8080
  - Set top box:
    + Uniphier PXs3
 
 Besides some vendor reference boards for the SoC above, there are also several
 new boards/machines:
 
  - TI AM335x Moxa UC-8100-ME-T open platform
  - TI AM57xx Beaglebone X15 Rev C
  - Microchip/Atmel sama5d27 SoM1 EK
  - Broadcom Raspberry Pi Zero W
  - Gemini-based D-Link DIR-685 router
  - Freescale i.MX6:
    + Toradex Apalis module + Apalis and Ixora carrier boards
    + Engicam GEAM6UL Starter Kit
  - Freescale i.MX53-based Beckhoff CX9020 Embedded PC
  - Mediatek mt7623-based BananaPi R2
  - Several Allwinner-based single-board computers:
   + Cubietruck plus
   + Bananapi M3, M2M and M64
   + NanoPi A64
   + A64-OLinuXino
   + Pine64
  - Rockchip RK3328 Pine64/Rock64 board support
  - Rockchip RK3399 boards:
   + RK3399 Sapphire module on Excavator carrier (RK3399 reference design)
   + Theobroma Systems RK3399-Q7 SoM
  - ZTE ZX296718 PCBOX Board
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Merge tag 'armsoc-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM/arm64 Devicetree updates from Olof Johansson:
 "As usual, device tree updates is the bulk of our material in this
  merge window. This time around, 559 patches affecting both 32- and
  64-bit platforms.

  Changes are too many to list individually, but some of the larger
  ones:

  New platform/SoC support:

   - Automotive:
     + Renesas R-Car D3 (R8A77995)
     + TI DT76x
     + MediaTek mt2712e
   - Communication-oriented:
     + Qualcomm IPQ8074
     + Broadcom Stingray
     + Marvell Armada 8080
   - Set top box:
     + Uniphier PXs3

  Besides some vendor reference boards for the SoC above, there are also
  several new boards/machines:

   - TI AM335x Moxa UC-8100-ME-T open platform
   - TI AM57xx Beaglebone X15 Rev C
   - Microchip/Atmel sama5d27 SoM1 EK
   - Broadcom Raspberry Pi Zero W
   - Gemini-based D-Link DIR-685 router
   - Freescale i.MX6:
     + Toradex Apalis module + Apalis and Ixora carrier boards
     + Engicam GEAM6UL Starter Kit
   - Freescale i.MX53-based Beckhoff CX9020 Embedded PC
   - Mediatek mt7623-based BananaPi R2
   - Several Allwinner-based single-board computers:
  + Cubietruck plus
  + Bananapi M3, M2M and M64
  + NanoPi A64
  + A64-OLinuXino
  + Pine64
   - Rockchip RK3328 Pine64/Rock64 board support
   - Rockchip RK3399 boards:
  + RK3399 Sapphire module on Excavator carrier (RK3399 reference design)
  + Theobroma Systems RK3399-Q7 SoM
   - ZTE ZX296718 PCBOX Board"

* tag 'armsoc-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (559 commits)
  ARM: dts: at91: at91sam9g45: add AC97
  arm64: dts: marvell: mcbin: enable more networking ports
  arm64: dts: marvell: add a reference to the sysctrl syscon in the ppv2 node
  arm64: dts: marvell: add TX interrupts for PPv2.2
  arm64: dts: uniphier: add PXs3 SoC support
  ARM: dts: uniphier: add pinctrl groups of ethernet phy mode
  ARM: dts: uniphier: fix size of sdctrl nodes
  ARM: dts: uniphier: add AIDET nodes
  arm64: dts: uniphier: fix size of sdctrl node
  arm64: dts: uniphier: add AIDET nodes
  Revert "ARM: dts: sun8i: h3: Enable dwmac-sun8i on the Beelink X2"
  arm64: dts: uniphier: add reset controller node of analog amplifier
  arm64: dts: marvell: add Device Tree files for Armada-8KP
  arm64: dts: rockchip: add Haikou baseboard with RK3399-Q7 SoM
  arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM
  dt-bindings: add rk3399-q7 SoM
  ARM: dts: rockchip: enable usb for rv1108-evb
  ARM: dts: rockchip: add usb nodes for rv1108 SoCs
  dt-bindings: update grf-binding for rv1108 SoCs
  ARM: dts: aspeed-g4: fix AHB window size of the SMC controllers
  ...
2017-09-10 20:54:48 -07:00
Linus Torvalds ae46654bcf ARM: SoC driver updates for v4.14
This branch contains platform-related driver updates for ARM and ARM64.
 
 Among them:
 
  - Reset driver updates:
   + New API for dealing with arrays of resets
   + Make unimplemented {de,}assert return success on shared resets
   + MSDKv1 driver
   + Removal of obsolete Gemini reset driver
   + Misc updates for sunxi and Uniphier
 
  - SoC drivers:
   + Platform SoC driver registration on Tegra
   + Shuffle of Qualcomm drivers into a submenu
   + Allwinner A64 support for SRAM
   + Renesas R-Car R3 support
   + Power domains for Rockchip RK3366
 
  - Misc updates and smaller fixes for TEE and memory driver subsystems
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Olof Johansson:
 "This branch contains platform-related driver updates for ARM and ARM64.

  Among them:

   - Reset driver updates:
     + New API for dealing with arrays of resets
     + Make unimplemented {de,}assert return success on shared resets
     + MSDKv1 driver
     + Removal of obsolete Gemini reset driver
     + Misc updates for sunxi and Uniphier

   - SoC drivers:
     + Platform SoC driver registration on Tegra
     + Shuffle of Qualcomm drivers into a submenu
     + Allwinner A64 support for SRAM
     + Renesas R-Car R3 support
     + Power domains for Rockchip RK3366

   - Misc updates and smaller fixes for TEE and memory driver
     subsystems"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
  firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
  soc/tegra: fuse: Add missing semi-colon
  soc/tegra: Restrict SoC device registration to Tegra
  drivers: soc: sunxi: add support for A64 and its SRAM C
  drivers: soc: sunxi: add support for remapping func value to reg value
  drivers: soc: sunxi: fix error processing on base address when claiming
  dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
  bus: sunxi-rsb: Enable by default for ARM64
  soc/tegra: Register SoC device
  firmware: tegra: set drvdata earlier
  memory: Convert to using %pOF instead of full_name
  soc: Convert to using %pOF instead of full_name
  bus: Convert to using %pOF instead of full_name
  firmware: Convert to using %pOF instead of full_name
  soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
  soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
  soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
  dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
  reset: uniphier: add analog amplifiers reset control
  reset: uniphier: add video input subsystem reset control
  ...
2017-09-10 20:40:00 -07:00
Rob Herring 4da722ca19 dt-bindings: Remove "status" from examples
Pretty much any node can have a status property, so it doesn't need to
be in examples.

Converted with the following command and removed examples with SoC and
board specific splits:

git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2017-09-05 10:03:06 -05:00
Icenowy Zheng 189f02826c dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
The display engine on Allwinner A64 wants to claim the SRAM C section.

Add a SRAM controller compatible for A64, and a SRAM section compatible
for its SRAM C.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
2017-08-18 14:30:19 +08:00
Geert Uytterhoeven d5f2ac6ae9 dt-bindings: sram: Document renesas,smp-sram
Document reserved SRAM for the SMP jump stub on Renesas R-Car Gen2 and
RZ/G1 SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2017-07-27 16:26:54 +02:00
Dave Gerlach 37afff0d87 misc: sram: Integrate protect-exec reserved sram area type
Introduce a new "protect-exec" reserved sram area type which is
makes use of the the existing functionality provided for the "pool"
sram region type for use with the genalloc framework and with the
added requirement that it be maintained as read-only and executable
while allowing for an arbitrary number of drivers to share the space.

This introduces a common way to maintain a region of sram as read-only
and executable and also introduces a helper function, sram_exec_copy,
which allows for copying data to this protected region while maintaining
locking to avoid conflicts between multiple users of the same space. A
region of memory that is marked with the "protect-exec" flag in the
device tree also has the requirement of providing a page aligned block
of memory so that the page attribute manipulation does not affect
surrounding regions.

Also, selectively enable this only for builds that support set_memory_*
calls, for now just ARM, through the use of Kconfig.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25 11:48:03 +01:00
Alexandre Belloni 15adffadc5 misc: sram: document new compatible
Add atmel,sama5d2-securam to the compatible list.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
2016-11-07 23:43:28 +01:00
Geert Uytterhoeven 2366b80f91 misc: sram: DT spelling s/#adress-cells/#address-cells/
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2016-04-25 08:38:44 -05:00
Marcin Wojtas eb43e02313 misc: sram: add optional ioremap without write combining
Some SRAM users may require non-bufferable access to the memory, which is
impossible, because devm_ioremap_wc() is used for setting sram->virt_base.

This commit adds optional flag 'no-memory-wc', which allow to choose remap
method, using DT property. Documentation is updated accordingly.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-14 12:19:45 -04:00
Krzysztof Kozlowski 22697acdd7 dt-bindings: Consolidate SRAM bindings from all vendors
SRAM bindings for various SoCs, using the mmio-sram genalloc
API, are spread over different places - per SoC vendor. Since all of
these are quite similar (they depend on mmio-sram) move them to a common
place.

Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Kukjin Kim <kgene@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-12-09 15:29:37 -06:00