From d64180fd5921be9db9cf63cc12c11086c444c0d0 Mon Sep 17 00:00:00 2001 From: Caesar Wang Date: Tue, 8 Sep 2015 14:18:20 +0800 Subject: dt-bindings: add document of Rockchip power domains This add the necessary binding documentation for the power domains found on Rockchip SoCs. Signed-off-by: Caesar Wang Reviewed-by: Kevin Hilman Signed-off-by: Heiko Stuebner --- .../bindings/soc/rockchip/power_domain.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt (limited to 'Documentation/devicetree/bindings/soc') diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt new file mode 100644 index 000000000000..4be34188afe4 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt @@ -0,0 +1,46 @@ +* Rockchip Power Domains + +Rockchip processors include support for multiple power domains which can be +powered up/down by software based on different application scenes to save power. + +Required properties for power domain controller: +- compatible: Should be one of the following. + "rockchip,rk3288-power-controller" - for RK3288 SoCs. +- #power-domain-cells: Number of cells in a power-domain specifier. + Should be 1 for multiple PM domains. +- #address-cells: Should be 1. +- #size-cells: Should be 0. + +Required properties for power domain sub nodes: +- reg: index of the power domain, should use macros in: + "include/dt-bindings/power-domain/rk3288.h" - for RK3288 type power domain. +- clocks (optional): phandles to clocks which need to be enabled while power domain + switches state. + +Example: + + power: power-controller { + compatible = "rockchip,rk3288-power-controller"; + #power-domain-cells = <1>; + #address-cells = <1>; + #size-cells = <0>; + + pd_gpu { + reg = ; + clocks = <&cru ACLK_GPU>; + }; + }; + +Node of a device using power domains must have a power-domains property, +containing a phandle to the power device node and an index specifying which +power domain to use. +The index should use macros in: + "include/dt-bindings/power-domain/rk3288.h" - for rk3288 type power domain. + +Example of the node using power domain: + + node { + /* ... */ + power-domains = <&power RK3288_PD_GPU>; + /* ... */ + }; -- cgit v1.2.3 From 4681347153dba01836aca18ebcfb4101c927d8ec Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 16 Oct 2015 16:11:41 +0200 Subject: dt-bindings: Correct paths in Rockchip power domains binding document Signed-off-by: Geert Uytterhoeven Signed-off-by: Heiko Stuebner --- Documentation/devicetree/bindings/soc/rockchip/power_domain.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation/devicetree/bindings/soc') diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt index 4be34188afe4..112756e11802 100644 --- a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt +++ b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt @@ -13,7 +13,7 @@ Required properties for power domain controller: Required properties for power domain sub nodes: - reg: index of the power domain, should use macros in: - "include/dt-bindings/power-domain/rk3288.h" - for RK3288 type power domain. + "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain. - clocks (optional): phandles to clocks which need to be enabled while power domain switches state. @@ -35,7 +35,7 @@ Node of a device using power domains must have a power-domains property, containing a phandle to the power device node and an index specifying which power domain to use. The index should use macros in: - "include/dt-bindings/power-domain/rk3288.h" - for rk3288 type power domain. + "include/dt-bindings/power/rk3288-power.h" - for rk3288 type power domain. Example of the node using power domain: -- cgit v1.2.3