Add binding documentation for the power domains
found on Rockchip RK3399 SoCs
Signed-off-by: Elaine Zhang <zhangq...@rock-chips.com>
---
.../bindings/soc/rockchip/power_domain.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
index 13dc6a3..98085c8 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
+++ b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
@@ -7,6 +7,7 @@ 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.
+ "rockchip,rk3399-power-controller" - for RK3399 SoCs.
- #power-domain-cells: Number of cells in a power-domain specifier.
Should be 1 for multiple PM domains.
- #address-cells: Should be 1.
@@ -16,6 +17,7 @@ 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.
+ "include/dt-bindings/power/rk3399-power.h" - for RK3399 type power
domain.
- clocks (optional): phandles to clocks which need to be enabled while power
domain
switches state.
@@ -45,12 +47,41 @@ Example:
};
};
+Example 2:
+ power: power-controller {
+ compatible = "rockchip,rk3399-power-controller";
+ #power-domain-cells = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pd_vio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <RK3399_PD_VIO>;
+
+ pd_vo {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <RK3399_PD_VO>;
+
+ pd_vopb {
+ reg = <RK3399_PD_VOPB>;
+ };
+
+ pd_vopl {
+ reg = <RK3399_PD_VOPL>;
+ };
+ };
+ };
+ };
+
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.
+ "include/dt-bindings/power/rk3399-power.h" - for rk3399 type power
domain.
Example of the node using power domain:
@@ -65,3 +96,9 @@ Example of the node using power domain:
power-domains = <&power RK3368_PD_GPU_1>;
/* ... */
};
+
+ node {
+ /* ... */
+ power-domains = <&power RK3399_PD_VOPB>;
+ /* ... */
+ };
--
1.9.1
