ae46654bcf
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
...
77 lines
1.9 KiB
Plaintext
77 lines
1.9 KiB
Plaintext
Allwinnner SoC SRAM controllers
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-----------------------------------------------------
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The SRAM controller found on most Allwinner devices is represented by
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a regular node for the SRAM controller itself, with sub-nodes
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reprensenting the SRAM handled by the SRAM controller.
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Controller Node
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---------------
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Required properties:
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- compatible : should be:
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- "allwinner,sun4i-a10-sram-controller"
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- "allwinner,sun50i-a64-sram-controller"
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- reg : sram controller register offset + length
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SRAM nodes
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----------
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Each SRAM is described using the mmio-sram bindings documented in
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Documentation/devicetree/bindings/sram/sram.txt
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Each SRAM will have SRAM sections that are going to be handled by the
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SRAM controller as subnodes. These sections are represented following
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once again the representation described in the mmio-sram binding.
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The valid sections compatible for A10 are:
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- allwinner,sun4i-a10-sram-a3-a4
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- allwinner,sun4i-a10-sram-d
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The valid sections compatible for A64 are:
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- allwinner,sun50i-a64-sram-c
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Devices using SRAM sections
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---------------------------
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Some devices need to request to the SRAM controller to map an SRAM for
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their exclusive use.
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The relationship between such a device and an SRAM section is
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expressed through the allwinner,sram property, that will take a
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phandle and an argument.
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This valid values for this argument are:
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- 0: CPU
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- 1: Device
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Example
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-------
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sram-controller@01c00000 {
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compatible = "allwinner,sun4i-a10-sram-controller";
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reg = <0x01c00000 0x30>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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sram_a: sram@00000000 {
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compatible = "mmio-sram";
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reg = <0x00000000 0xc000>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 0x00000000 0xc000>;
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emac_sram: sram-section@8000 {
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compatible = "allwinner,sun4i-a10-sram-a3-a4";
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reg = <0x8000 0x4000>;
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};
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};
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};
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emac: ethernet@01c0b000 {
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compatible = "allwinner,sun4i-a10-emac";
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...
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allwinner,sram = <&emac_sram 1>;
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};
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