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Diffstat (limited to 'Documentation/devicetree/bindings/power/pd-samsung.txt')
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diff --git a/Documentation/devicetree/bindings/power/pd-samsung.txt b/Documentation/devicetree/bindings/power/pd-samsung.txt new file mode 100644 index 000000000..92ef355e8 --- /dev/null +++ b/Documentation/devicetree/bindings/power/pd-samsung.txt @@ -0,0 +1,45 @@ +* Samsung Exynos Power Domains + +Exynos processors include support for multiple power domains which are used +to gate power to one or more peripherals on the processor. + +Required Properties: +- compatible: should be one of the following. + * samsung,exynos4210-pd - for exynos4210 type power domain. + * samsung,exynos5433-pd - for exynos5433 type power domain. +- reg: physical base address of the controller and length of memory mapped + region. +- #power-domain-cells: number of cells in power domain specifier; + must be 0. + +Optional Properties: +- label: Human readable string with domain name. Will be visible in userspace + to let user to distinguish between multiple domains in SoC. +- power-domains: phandle pointing to the parent power domain, for more details + see Documentation/devicetree/bindings/power/power_domain.txt + +Deprecated Properties: +- clocks +- clock-names + +Node of a device using power domains must have a power-domains property +defined with a phandle to respective power domain. + +Example: + + lcd0: power-domain-lcd0 { + compatible = "samsung,exynos4210-pd"; + reg = <0x10023C00 0x10>; + #power-domain-cells = <0>; + label = "LCD0"; + }; + + mfc_pd: power-domain@10044060 { + compatible = "samsung,exynos4210-pd"; + reg = <0x10044060 0x20>; + #power-domain-cells = <0>; + label = "MFC"; + }; + +See Documentation/devicetree/bindings/power/power_domain.txt for description +of consumer-side bindings. |