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Subject[PATCH v3 3/3] dt-bindings: modify document of Rockchip power domains
Date
Modify binding documentation for the power domains
found on Rockchip RK3368 SoCs.

Signed-off-by: zhangqing <zhangqing@rock-chips.com>
---
.../bindings/soc/rockchip/power_domain.txt | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
index 112756e..13dc6a3 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
+++ b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
@@ -6,6 +6,7 @@ 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.
+ "rockchip,rk3368-power-controller" - for RK3368 SoCs.
- #power-domain-cells: Number of cells in a power-domain specifier.
Should be 1 for multiple PM domains.
- #address-cells: Should be 1.
@@ -14,6 +15,7 @@ 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/rk3288-power.h" - for RK3288 type power domain.
+ "include/dt-bindings/power/rk3368-power.h" - for RK3368 type power domain.
- clocks (optional): phandles to clocks which need to be enabled while power domain
switches state.

@@ -31,11 +33,24 @@ Example:
};
};

+ power: power-controller {
+ compatible = "rockchip,rk3368-power-controller";
+ #power-domain-cells = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pd_gpu_1 {
+ reg = <RK3368_PD_GPU_1>;
+ clocks = <&cru ACLK_GPU_CFG>;
+ };
+ };
+
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/rk3288-power.h" - for rk3288 type power domain.
+ "include/dt-bindings/power/rk3368-power.h" - for rk3368 type power domain.

Example of the node using power domain:

@@ -44,3 +59,9 @@ Example of the node using power domain:
power-domains = <&power RK3288_PD_GPU>;
/* ... */
};
+
+ node {
+ /* ... */
+ power-domains = <&power RK3368_PD_GPU_1>;
+ /* ... */
+ };
--
1.9.1

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