syscon.yaml (2977B)
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 7title: System Controller Registers R/W Device Tree Bindings 8 9description: | 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 19maintainers: 20 - Lee Jones <lee.jones@linaro.org> 21 22select: 23 properties: 24 compatible: 25 contains: 26 enum: 27 - syscon 28 29 required: 30 - compatible 31 32properties: 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 91required: 92 - compatible 93 - reg 94 95additionalProperties: true 96 97examples: 98 - | 99 syscon: syscon@1c00000 { 100 compatible = "allwinner,sun8i-h3-system-controller", "syscon"; 101 reg = <0x01c00000 0x1000>; 102 }; 103...