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4681347153
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
47 lines
1.4 KiB
Plaintext
47 lines
1.4 KiB
Plaintext
* Rockchip Power Domains
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Rockchip processors include support for multiple power domains which can be
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powered up/down by software based on different application scenes to save power.
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Required properties for power domain controller:
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- compatible: Should be one of the following.
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"rockchip,rk3288-power-controller" - for RK3288 SoCs.
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- #power-domain-cells: Number of cells in a power-domain specifier.
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Should be 1 for multiple PM domains.
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- #address-cells: Should be 1.
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- #size-cells: Should be 0.
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Required properties for power domain sub nodes:
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- reg: index of the power domain, should use macros in:
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"include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
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- clocks (optional): phandles to clocks which need to be enabled while power domain
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switches state.
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Example:
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power: power-controller {
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compatible = "rockchip,rk3288-power-controller";
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#power-domain-cells = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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pd_gpu {
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reg = <RK3288_PD_GPU>;
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clocks = <&cru ACLK_GPU>;
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};
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};
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Node of a device using power domains must have a power-domains property,
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containing a phandle to the power device node and an index specifying which
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power domain to use.
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The index should use macros in:
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"include/dt-bindings/power/rk3288-power.h" - for rk3288 type power domain.
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Example of the node using power domain:
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node {
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/* ... */
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power-domains = <&power RK3288_PD_GPU>;
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/* ... */
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};
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