[PATCH v7 2/3] dt-bindings: add document of Rockchip power domain
From: jinkun.hong <hidden>
Date: 2014-10-24 07:30:32
Also in:
linux-devicetree, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: "jinkun.hong" <redacted> Signed-off-by: Jack Dai <redacted> Signed-off-by: jinkun.hong <redacted> --- Changes in v7: None Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: - DT structure has changed Changes in v2: - move clocks to "optional" .../bindings/arm/rockchip/power_domain.txt | 46 ++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/power_domain.txt
diff --git a/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt b/Documentation/devicetree/bindings/arm/rockchip/power_domain.txt
new file mode 100644
index 0000000..f8357b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/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-gpu - for rk3288 type gpu power domain. + * rockchip,rk3288-power-hevc - for rk3288 type hevc power domain. + * rockchip,rk3288-power-video - for rk3288 type video power domain. + * rockchip,rk3288-power-vio - for rk3288 type vio power domain. +- rockchip,pmu: phandle referencing a syscon providing the pmu registers +- #power-domain-cells: Number of cells in a power-domain specifier. + should be 0. + +Example: + + gpu_power: gpu-power-controller { + compatible = "rockchip,rk3288-power-gpu"; + rockchip,pmu = <&pmu>; + #power-domain-cells = <0>; + }; + + hevc_power: hevc-power-controller { + compatible = "rockchip,rk3288-power-hevc"; + rockchip,pmu = <&pmu>; + #power-domain-cells = <0>; + }; + + video_power: video-power-controller { + compatible = "rockchip,rk3288-power-video"; + rockchip,pmu = <&pmu>; + #power-domain-cells = <0>; + }; + + vio_power: vio-power-controller { + compatible = "rockchip,rk3288-power-vio"; + rockchip,pmu = <&pmu>; + #power-domain-cells = <0>; + }; + + gpu: gpu at 0xffa30000 { + ... + power-domains = <&gpu_power>; + ... + };
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1.7.9.5