dt-bindings: add binding for rk3399 power domains

Add binding documentation for the power domains
found on Rockchip RK3399 SoCs

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
index 13dc6a3..98085c8 100644 (file)
--- 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>;
+               /* ... */
+       };