syscon.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/mfd/syscon.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: System Controller Registers R/W Device Tree Bindings
    8 
    9 description: |
   10   System controller node represents a register region containing a set
   11   of miscellaneous registers. The registers are not cohesive enough to
   12   represent as any specific type of device. The typical use-case is
   13   for some other node's driver, or platform-specific code, to acquire
   14   a reference to the syscon node (e.g. by phandle, node path, or
   15   search using a specific compatible value), interrogate the node (or
   16   associated OS driver) to determine the location of the registers,
   17   and access the registers directly.
   18 
   19 maintainers:
   20   - Lee Jones <lee@kernel.org>
   21 
   22 select:
   23   properties:
   24     compatible:
   25       contains:
   26         enum:
   27           - syscon
   28 
   29   required:
   30     - compatible
   31 
   32 properties:
   33   compatible:
   34     anyOf:
   35       - items:
   36           - enum:
   37               - allwinner,sun8i-a83t-system-controller
   38               - allwinner,sun8i-h3-system-controller
   39               - allwinner,sun8i-v3s-system-controller
   40               - allwinner,sun50i-a64-system-controller
   41               - brcm,cru-clkset
   42               - freecom,fsg-cs2-system-controller
   43               - hisilicon,dsa-subctrl
   44               - hisilicon,hi6220-sramctrl
   45               - hisilicon,pcie-sas-subctrl
   46               - hisilicon,peri-subctrl
   47               - intel,lgm-syscon
   48               - marvell,armada-3700-usb2-host-misc
   49               - mediatek,mt8135-pctl-a-syscfg
   50               - mediatek,mt8135-pctl-b-syscfg
   51               - microchip,lan966x-cpu-syscon
   52               - microchip,sparx5-cpu-syscon
   53               - mstar,msc313-pmsleep
   54               - rockchip,px30-qos
   55               - rockchip,rk3036-qos
   56               - rockchip,rk3066-qos
   57               - rockchip,rk3228-qos
   58               - rockchip,rk3288-qos
   59               - rockchip,rk3368-qos
   60               - rockchip,rk3399-qos
   61               - rockchip,rk3568-qos
   62               - samsung,exynos3-sysreg
   63               - samsung,exynos4-sysreg
   64               - samsung,exynos5-sysreg
   65               - samsung,exynos5433-sysreg
   66               - samsung,exynos850-sysreg
   67               - samsung,exynosautov9-sysreg
   68 
   69           - const: syscon
   70 
   71       - contains:
   72           const: syscon
   73         minItems: 2
   74         maxItems: 4  # Should be enough
   75 
   76   reg:
   77     maxItems: 1
   78 
   79   reg-io-width:
   80     description: |
   81       The size (in bytes) of the IO accesses that should be performed
   82       on the device.
   83     $ref: /schemas/types.yaml#/definitions/uint32
   84     enum: [1, 2, 4, 8]
   85 
   86   hwlocks:
   87     maxItems: 1
   88     description:
   89       Reference to a phandle of a hardware spinlock provider node.
   90 
   91 required:
   92   - compatible
   93   - reg
   94 
   95 additionalProperties: true
   96 
   97 examples:
   98   - |
   99     syscon: syscon@1c00000 {
  100         compatible = "allwinner,sun8i-h3-system-controller", "syscon";
  101         reg = <0x01c00000 0x1000>;
  102     };
  103 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/mfd/syscon.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/mfd/syscon.yaml