# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/syscon.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: System Controller Devices
description: |
System controller node represents a register region containing a set
of miscellaneous registers. The registers are not cohesive enough to
represent as any specific type of device. The typical use-case is
for some other node's driver, or platform-specific code, to acquire
a reference to the syscon node (e.g. by phandle, node path, or
search using a specific compatible value), interrogate the node (or
associated OS driver) to determine the location of the registers,
and access the registers directly.
maintainers:
- Lee Jones <[email protected]>
# Need a select with all compatibles listed for compatibility with older
# dtschema (<2024.02), so this will not be selected for other schemas having
# syscon fallback.
select:
properties:
compatible:
contains:
enum:
- al,alpine-sysfabric-servic
- allwinner,sun8i-a83t-system-controller
- allwinner,sun8i-h3-system-controller
- allwinner,sun8i-v3s-system-controller
- allwinner,sun50i-a64-system-controller
- altr,l3regs
- altr,sdr-ctl
- amd,pensando-elba-syscon
- amlogic,meson-mx-assist
- amlogic,meson-mx-bootrom
- amlogic,meson8-analog-top
- amlogic,meson8b-analog-top
- amlogic,meson8-pmu
- amlogic,meson8b-pmu
- apm,merlin-poweroff-mailbox
- apm,mustang-poweroff-mailbox
- apm,xgene-csw
- apm,xgene-efuse
- apm,xgene-mcb
- apm,xgene-rb
- apm,xgene-scu
- atmel,sama5d2-sfrbu
- atmel,sama5d3-nfc-io
- atmel,sama5d3-sfrbu
- atmel,sama5d4-sfrbu
- axis,artpec6-syscon
- brcm,cru-clkset
- brcm,sr-cdru
- brcm,sr-mhb
- cirrus,ep7209-syscon1
- cirrus,ep7209-syscon2
- cirrus,ep7209-syscon3
- cnxt,cx92755-uc
- freecom,fsg-cs2-system-controller
- fsl,imx93-aonmix-ns-syscfg
- fsl,imx93-wakeupmix-syscfg
- fsl,ls1088a-reset
- fsl,vf610-anatop
- fsl,vf610-mscm-cpucfg
- hisilicon,dsa-subctrl
- hisilicon,hi6220-sramctrl
- hisilicon,hip04-ppe
- hisilicon,pcie-sas-subctrl
- hisilicon,peri-subctrl
- hpe,gxp-sysreg
- loongson,ls1b-syscon
- loongson,ls1c-syscon
- lsi,axxia-syscon
- marvell,armada-3700-cpu-misc
- marvell,armada-3700-nb-pm
- marvell,armada-3700-avs
- marvell,armada-3700-usb2-host-misc
- marvell,dove-global-config
- mediatek,mt2701-pctl-a-syscfg
- mediatek,mt2712-pctl-a-syscfg
- mediatek,mt6397-pctl-pmic-syscfg
- mediatek,mt8135-pctl-a-syscfg
- mediatek,mt8135-pctl-b-syscfg
- mediatek,mt8173-pctl-a-syscfg
- mediatek,mt8365-syscfg
- microchip,lan966x-cpu-syscon
- microchip,sam9x60-sfr
- microchip,sama7g5-ddr3phy
- mscc,ocelot-cpu-syscon
- mstar,msc313-pmsleep
- nuvoton,ma35d1-sys
- nuvoton,wpcm450-shm
- rockchip,px30-qos
- rockchip,rk3036-qos
- rockchip,rk3066-qos
- rockchip,rk3128-qos
- rockchip,rk3228-qos
- rockchip,rk3288-qos
- rockchip,rk3368-qos
- rockchip,rk3399-qos
- rockchip,rk3568-qos
- rockchip,rk3588-qos
- rockchip,rv1126-qos
- st,spear1340-misc
- stericsson,nomadik-pmu
- starfive,jh7100-sysmain
- ti,am62-opp-efuse-table
- ti,am62-usb-phy-ctrl
- ti,am625-dss-oldi-io-ctrl
- ti,am62p-cpsw-mac-efuse
- ti,am654-dss-oldi-io-ctrl
- ti,j784s4-pcie-ctrl
- ti,keystone-pllctrl
required:
- compatible
properties:
compatible:
items:
- enum:
- al,alpine-sysfabric-service
- allwinner,sun8i-a83t-system-controller
- allwinner,sun8i-h3-system-controller
- allwinner,sun8i-v3s-system-controller
- allwinner,sun50i-a64-system-controller
- altr,l3regs
- altr,sdr-ctl
- amd,pensando-elba-syscon
- amlogic,meson-mx-assist
- amlogic,meson-mx-bootrom
- amlogic,meson8-analog-top
- amlogic,meson8b-analog-top
- amlogic,meson8-pmu
- amlogic,meson8b-pmu
- apm,merlin-poweroff-mailbox
- apm,mustang-poweroff-mailbox
- apm,xgene-csw
- apm,xgene-efuse
- apm,xgene-mcb
- apm,xgene-rb
- apm,xgene-scu
- atmel,sama5d2-sfrbu
- atmel,sama5d3-nfc-io
- atmel,sama5d3-sfrbu
- atmel,sama5d4-sfrbu
- axis,artpec6-syscon
- brcm,cru-clkset
- brcm,sr-cdru
- brcm,sr-mhb
- cirrus,ep7209-syscon1
- cirrus,ep7209-syscon2
- cirrus,ep7209-syscon3
- cnxt,cx92755-uc
- freecom,fsg-cs2-system-controller
- fsl,imx93-aonmix-ns-syscfg
- fsl,imx93-wakeupmix-syscfg
- fsl,ls1088a-reset
- fsl,vf610-anatop
- fsl,vf610-mscm-cpucfg
- hisilicon,dsa-subctrl
- hisilicon,hi6220-sramctrl
- hisilicon,hip04-ppe
- hisilicon,pcie-sas-subctrl
- hisilicon,peri-subctrl
- hpe,gxp-sysreg
- loongson,ls1b-syscon
- loongson,ls1c-syscon
- lsi,axxia-syscon
- marvell,armada-3700-cpu-misc
- marvell,armada-3700-nb-pm
- marvell,armada-3700-avs
- marvell,armada-3700-usb2-host-misc
- marvell,dove-global-config
- mediatek,mt2701-pctl-a-syscfg
- mediatek,mt2712-pctl-a-syscfg
- mediatek,mt6397-pctl-pmic-syscfg
- mediatek,mt8135-pctl-a-syscfg
- mediatek,mt8135-pctl-b-syscfg
- mediatek,mt8173-pctl-a-syscfg
- mediatek,mt8365-syscfg
- microchip,lan966x-cpu-syscon
- microchip,sam9x60-sfr
- microchip,sama7g5-ddr3phy
- mscc,ocelot-cpu-syscon
- mstar,msc313-pmsleep
- nuvoton,ma35d1-sys
- nuvoton,wpcm450-shm
- rockchip,px30-qos
- rockchip,rk3036-qos
- rockchip,rk3066-qos
- rockchip,rk3128-qos
- rockchip,rk3228-qos
- rockchip,rk3288-qos
- rockchip,rk3368-qos
- rockchip,rk3399-qos
- rockchip,rk3568-qos
- rockchip,rk3588-qos
- rockchip,rv1126-qos
- st,spear1340-misc
- stericsson,nomadik-pmu
- starfive,jh7100-sysmain
- ti,am62-opp-efuse-table
- ti,am62-usb-phy-ctrl
- ti,am625-dss-oldi-io-ctrl
- ti,am62p-cpsw-mac-efuse
- ti,am654-dss-oldi-io-ctrl
- ti,j784s4-pcie-ctrl
- ti,keystone-pllctrl
- const: syscon
reg:
maxItems: 1
resets:
maxItems: 1
required:
- compatible
- reg
allOf:
- $ref: syscon-common.yaml#
unevaluatedProperties: false
examples:
- |
syscon: syscon@1c00000 {
compatible = "allwinner,sun8i-h3-system-controller", "syscon";
reg = <0x01c00000 0x1000>;
};
...
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