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101 lines
2.7 KiB
101 lines
2.7 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/mfd/syscon.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: System Controller Registers R/W Device Tree Bindings |
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description: | |
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System controller node represents a register region containing a set |
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of miscellaneous registers. The registers are not cohesive enough to |
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represent as any specific type of device. The typical use-case is |
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for some other node's driver, or platform-specific code, to acquire |
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a reference to the syscon node (e.g. by phandle, node path, or |
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search using a specific compatible value), interrogate the node (or |
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associated OS driver) to determine the location of the registers, |
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and access the registers directly. |
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maintainers: |
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- Lee Jones <[email protected]> |
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select: |
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properties: |
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compatible: |
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contains: |
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enum: |
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- syscon |
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required: |
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- compatible |
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properties: |
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compatible: |
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anyOf: |
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- items: |
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- enum: |
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- allwinner,sun8i-a83t-system-controller |
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- allwinner,sun8i-h3-system-controller |
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- allwinner,sun8i-v3s-system-controller |
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- allwinner,sun50i-a64-system-controller |
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- hisilicon,dsa-subctrl |
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- hisilicon,hi6220-sramctrl |
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- hisilicon,pcie-sas-subctrl |
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- hisilicon,peri-subctrl |
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- microchip,sparx5-cpu-syscon |
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- mstar,msc313-pmsleep |
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- rockchip,px30-qos |
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- rockchip,rk3036-qos |
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- rockchip,rk3066-qos |
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- rockchip,rk3228-qos |
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- rockchip,rk3288-qos |
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- rockchip,rk3399-qos |
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- rockchip,rk3568-qos |
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- samsung,exynos3-sysreg |
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- samsung,exynos4-sysreg |
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- samsung,exynos5-sysreg |
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- samsung,exynos5433-sysreg |
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- const: syscon |
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- contains: |
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const: syscon |
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minItems: 2 |
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maxItems: 4 # Should be enough |
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reg: |
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maxItems: 1 |
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reg-io-width: |
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description: | |
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The size (in bytes) of the IO accesses that should be performed |
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on the device. |
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$ref: /schemas/types.yaml#/definitions/uint32 |
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enum: [1, 2, 4, 8] |
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hwlocks: |
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maxItems: 1 |
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description: |
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Reference to a phandle of a hardware spinlock provider node. |
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required: |
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- compatible |
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- reg |
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additionalProperties: true |
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examples: |
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- | |
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syscon: syscon@1c00000 { |
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compatible = "allwinner,sun8i-h3-system-controller", "syscon"; |
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reg = <0x01c00000 0x1000>; |
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}; |
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- | |
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gpr: iomuxc-gpr@20e0000 { |
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compatible = "fsl,imx6q-iomuxc-gpr", "syscon"; |
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reg = <0x020e0000 0x38>; |
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hwlocks = <&hwlock1 1>; |
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}; |
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...
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