1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/mfd/syscon.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: System Controller Registers R/W
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.
20 - Lee Jones <lee@kernel.org>
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 - amd,pensando-elba-syscon
43 - freecom,fsg-cs2-system-controller
44 - fsl,imx93-aonmix-ns-syscfg
45 - fsl,imx93-wakeupmix-syscfg
46 - hisilicon,dsa-subctrl
47 - hisilicon,hi6220-sramctrl
48 - hisilicon,pcie-sas-subctrl
49 - hisilicon,peri-subctrl
52 - loongson,ls1b-syscon
53 - loongson,ls1c-syscon
54 - marvell,armada-3700-usb2-host-misc
55 - mediatek,mt8135-pctl-a-syscfg
56 - mediatek,mt8135-pctl-b-syscfg
57 - mediatek,mt8365-syscfg
58 - microchip,lan966x-cpu-syscon
59 - microchip,sparx5-cpu-syscon
60 - mstar,msc313-pmsleep
74 - starfive,jh7100-sysmain
75 - ti,am654-dss-oldi-io-ctrl
82 maxItems: 5 # Should be enough
89 The size (in bytes) of the IO accesses that should be performed
99 Reference to a phandle of a hardware spinlock provider node.
117 additionalProperties: true
121 syscon: syscon@1c00000 {
122 compatible = "allwinner,sun8i-h3-system-controller", "syscon";
123 reg = <0x01c00000 0x1000>;