1 * Rockchip Power Domains
3 Rockchip processors include support for multiple power domains which can be
4 powered up/down by software based on different application scenes to save power.
6 Required properties for power domain controller:
7 - compatible: Should be one of the following.
8 "rockchip,px30-power-controller" - for PX30 SoCs.
9 "rockchip,rk3036-power-controller" - for RK3036 SoCs.
10 "rockchip,rk3128-power-controller" - for RK3128 SoCs.
11 "rockchip,rk3228-power-controller" - for RK3228 SoCs.
12 "rockchip,rk3288-power-controller" - for RK3288 SoCs.
13 "rockchip,rk3328-power-controller" - for RK3328 SoCs.
14 "rockchip,rk3366-power-controller" - for RK3366 SoCs.
15 "rockchip,rk3368-power-controller" - for RK3368 SoCs.
16 "rockchip,rk3399-power-controller" - for RK3399 SoCs.
17 - #power-domain-cells: Number of cells in a power-domain specifier.
18 Should be 1 for multiple PM domains.
19 - #address-cells: Should be 1.
20 - #size-cells: Should be 0.
22 Required properties for power domain sub nodes:
23 - reg: index of the power domain, should use macros in:
24 "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
25 "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
26 "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
27 "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
28 "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
29 "include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
30 "include/dt-bindings/power/rk3366-power.h" - for RK3366 type power domain.
31 "include/dt-bindings/power/rk3368-power.h" - for RK3368 type power domain.
32 "include/dt-bindings/power/rk3399-power.h" - for RK3399 type power domain.
33 - clocks (optional): phandles to clocks which need to be enabled while power domain
35 - pm_qos (optional): phandles to qos blocks which need to be saved and restored
36 while power domain switches state.
40 qos_gpu: qos_gpu@ffaf0000 {
42 reg = <0x0 0xffaf0000 0x0 0x20>;
47 power: power-controller {
48 compatible = "rockchip,rk3288-power-controller";
49 #power-domain-cells = <1>;
54 reg = <RK3288_PD_GPU>;
55 clocks = <&cru ACLK_GPU>;
60 power: power-controller {
61 compatible = "rockchip,rk3368-power-controller";
62 #power-domain-cells = <1>;
67 reg = <RK3368_PD_GPU_1>;
68 clocks = <&cru ACLK_GPU_CFG>;
73 power: power-controller {
74 compatible = "rockchip,rk3399-power-controller";
75 #power-domain-cells = <1>;
82 reg = <RK3399_PD_VIO>;
90 reg = <RK3399_PD_VOPB>;
94 reg = <RK3399_PD_VOPL>;
100 Node of a device using power domains must have a power-domains property,
101 containing a phandle to the power device node and an index specifying which
103 The index should use macros in:
104 "include/dt-bindings/power/px30-power.h" - for px30 type power domain.
105 "include/dt-bindings/power/rk3036-power.h" - for rk3036 type power domain.
106 "include/dt-bindings/power/rk3128-power.h" - for rk3128 type power domain.
107 "include/dt-bindings/power/rk3128-power.h" - for rk3228 type power domain.
108 "include/dt-bindings/power/rk3288-power.h" - for rk3288 type power domain.
109 "include/dt-bindings/power/rk3328-power.h" - for rk3328 type power domain.
110 "include/dt-bindings/power/rk3366-power.h" - for rk3366 type power domain.
111 "include/dt-bindings/power/rk3368-power.h" - for rk3368 type power domain.
112 "include/dt-bindings/power/rk3399-power.h" - for rk3399 type power domain.
114 Example of the node using power domain:
118 power-domains = <&power RK3288_PD_GPU>;
124 power-domains = <&power RK3368_PD_GPU_1>;
130 power-domains = <&power RK3399_PD_VOPB>;