dt-bindings: power: rockchip: Convert to json-schema
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Message ID 20200715170216.2875868-1-enric.balletbo@collabora.com
State New
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  • dt-bindings: power: rockchip: Convert to json-schema
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Commit Message

Enric Balletbo i Serra July 15, 2020, 5:02 p.m. UTC
Convert the soc/rockchip/power_domain.txt binding document to json-schema
and move to the power bindings directory.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---

 .../power/rockchip,power-controller.yaml      | 154 ++++++++++++++++++
 .../bindings/soc/rockchip/power_domain.txt    | 136 ----------------
 2 files changed, 154 insertions(+), 136 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
 delete mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt

Comments

Rob Herring July 21, 2020, 3:25 a.m. UTC | #1
On Wed, Jul 15, 2020 at 07:02:16PM +0200, Enric Balletbo i Serra wrote:
> Convert the soc/rockchip/power_domain.txt binding document to json-schema
> and move to the power bindings directory.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
> 
>  .../power/rockchip,power-controller.yaml      | 154 ++++++++++++++++++
>  .../bindings/soc/rockchip/power_domain.txt    | 136 ----------------
>  2 files changed, 154 insertions(+), 136 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
>  delete mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
> new file mode 100644
> index 000000000000..af50cf2b3e63
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
> @@ -0,0 +1,154 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/rockchip,power-controller.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip Power Domains
> +
> +maintainers:
> +  - Caesar Wang <wxt@rock-chips.com>
> +  - Heiko Stuebner <heiko@sntech.de>
> +
> +description: |
> +  Rockchip processors include support for multiple power domains which can be
> +  powered up/down by software based on different application scenes to save power.
> +
> +  Power domains contained within power-controller node are generic power domain
> +  providers documented in Documentation/devicetree/bindings/power/power-domain.yaml.
> +
> +  IP cores belonging to a power domain should contain a 'power-domains'
> +  property that is a phandle for the power domain node representing the domain.
> +
> +properties:
> +  power-controller:
> +    type: object
> +    description: List of power domains provided by this controller.
> +
> +    properties:
> +      compatible:
> +        enum:
> +          - rockchip,px30-power-controller
> +          - rockchip,rk3036-power-controller
> +          - rockchip,rk3066-power-controller
> +          - rockchip,rk3128-power-controller
> +          - rockchip,rk3188-power-controller
> +          - rockchip,rk3228-power-controller
> +          - rockchip,rk3288-power-controller
> +          - rockchip,rk3328-power-controller
> +          - rockchip,rk3366-power-controller
> +          - rockchip,rk3368-power-controller
> +          - rockchip,rk3399-power-controller
> +
> +      reg:
> +        description: |
> +          Power domain index. Valid values are defined in:
> +          "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
> +          "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
> +          "include/dt-bindings/power/rk3066-power.h" - for RK3066 type power domain.
> +          "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
> +          "include/dt-bindings/power/rk3188-power.h" - for RK3188 type power domain.
> +          "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
> +          "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
> +          "include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
> +          "include/dt-bindings/power/rk3366-power.h" - for RK3366 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.
> +        maxItems: 1
> +
> +      clocks:
> +        description: |
> +          A number of phandles to clocks that need to be enabled while power domain
> +          switches state.
> +      pm_qos:
> +        description: |
> +          A number of phandles to qos blocks which need to be saved and restored
> +          while power domain switches state.
> +
> +      power-supply: true
> +
> +    required:
> +      - compatible
> +      - reg

You need:

       additionalProperties: false

(with indentation). Then you will get a bunch of errors as you are 
missing a level of nodes. The 'power-controller' node doesn't have 
'reg' for example. You'll need to use 'patternProperties' with '^pd_'.

And to describe the nested power domains, you have to describe yet 
another level. You can do a $ref with something like:

$ref: '#/properties/power-controller/patternProperties/^pd_'

That creates a circular reference though and I'm not sure what will 
happen. :)

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/rk3399-cru.h>
> +    #include <dt-bindings/power/rk3399-power.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        qos_iep: qos@ffa98000 {
> +            compatible = "syscon";

This will generate a warning now. 'syscon' should not be used alone.

> +            reg = <0x0 0xffa98000 0x0 0x20>;
> +        };
> +
> +        qos_rga_r: qos@ffab0000 {
> +            compatible = "syscon";
> +            reg = <0x0 0xffab0000 0x0 0x20>;
> +        };
> +
> +        qos_rga_w: qos@ffab0080 {
> +            compatible = "syscon";
> +            reg = <0x0 0xffab0080 0x0 0x20>;
> +        };
> +
> +        qos_video_m0: qos@ffab8000 {
> +            compatible = "syscon";
> +            reg = <0x0 0xffab8000 0x0 0x20>;
> +        };
> +
> +        qos_video_m1_r: qos@ffac0000 {
> +            compatible = "syscon";
> +            reg = <0x0 0xffac0000 0x0 0x20>;
> +        };
> +
> +        qos_video_m1_w: qos@ffac0080 {
> +            compatible = "syscon";
> +            reg = <0x0 0xffac0080 0x0 0x20>;
> +        };
> +
> +        power-management@ff310000 {
> +            compatible = "rockchip,rk3399-pmu", "syscon", "simple-mfd";
> +            reg = <0x0 0xff310000 0x0 0x1000>;
> +
> +            power-controller {
> +                compatible = "rockchip,rk3399-power-controller";
> +                #power-domain-cells = <1>;
> +                #address-cells = <1>;
> +                #size-cells = <0>;
> +
> +                /* These power domains are grouped by VD_CENTER */
> +                pd_iep@RK3399_PD_IEP {
> +                    reg = <RK3399_PD_IEP>;
> +                    clocks = <&cru ACLK_IEP>,
> +                             <&cru HCLK_IEP>;
> +                    pm_qos = <&qos_iep>;
> +                };
> +                pd_rga@RK3399_PD_RGA {
> +                    reg = <RK3399_PD_RGA>;
> +                    clocks = <&cru ACLK_RGA>,
> +                             <&cru HCLK_RGA>;
> +                    pm_qos = <&qos_rga_r>,
> +                             <&qos_rga_w>;
> +                };
> +                pd_vcodec@RK3399_PD_VCODEC {
> +                    reg = <RK3399_PD_VCODEC>;
> +                    clocks = <&cru ACLK_VCODEC>,
> +                             <&cru HCLK_VCODEC>;
> +                    pm_qos = <&qos_video_m0>;
> +                };
> +                pd_vdu@RK3399_PD_VDU {
> +                    reg = <RK3399_PD_VDU>;
> +                    clocks = <&cru ACLK_VDU>,
> +                             <&cru HCLK_VDU>;
> +                    pm_qos = <&qos_video_m1_r>,
> +                             <&qos_video_m1_w>;
> +                };
> +            };
> +        };
> +    };
Enric Balletbo i Serra July 23, 2020, 3:46 p.m. UTC | #2
Hi Rob,

Thank you for your review.

On 21/7/20 5:25, Rob Herring wrote:
> On Wed, Jul 15, 2020 at 07:02:16PM +0200, Enric Balletbo i Serra wrote:
>> Convert the soc/rockchip/power_domain.txt binding document to json-schema
>> and move to the power bindings directory.
>>
>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
>> ---
>>
>>  .../power/rockchip,power-controller.yaml      | 154 ++++++++++++++++++
>>  .../bindings/soc/rockchip/power_domain.txt    | 136 ----------------
>>  2 files changed, 154 insertions(+), 136 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
>>  delete mode 100644 Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
>>
>> diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
>> new file mode 100644
>> index 000000000000..af50cf2b3e63
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
>> @@ -0,0 +1,154 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/power/rockchip,power-controller.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Rockchip Power Domains
>> +
>> +maintainers:
>> +  - Caesar Wang <wxt@rock-chips.com>
>> +  - Heiko Stuebner <heiko@sntech.de>
>> +
>> +description: |
>> +  Rockchip processors include support for multiple power domains which can be
>> +  powered up/down by software based on different application scenes to save power.
>> +
>> +  Power domains contained within power-controller node are generic power domain
>> +  providers documented in Documentation/devicetree/bindings/power/power-domain.yaml.
>> +
>> +  IP cores belonging to a power domain should contain a 'power-domains'
>> +  property that is a phandle for the power domain node representing the domain.
>> +
>> +properties:
>> +  power-controller:
>> +    type: object
>> +    description: List of power domains provided by this controller.
>> +
>> +    properties:
>> +      compatible:
>> +        enum:
>> +          - rockchip,px30-power-controller
>> +          - rockchip,rk3036-power-controller
>> +          - rockchip,rk3066-power-controller
>> +          - rockchip,rk3128-power-controller
>> +          - rockchip,rk3188-power-controller
>> +          - rockchip,rk3228-power-controller
>> +          - rockchip,rk3288-power-controller
>> +          - rockchip,rk3328-power-controller
>> +          - rockchip,rk3366-power-controller
>> +          - rockchip,rk3368-power-controller
>> +          - rockchip,rk3399-power-controller
>> +
>> +      reg:
>> +        description: |
>> +          Power domain index. Valid values are defined in:
>> +          "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
>> +          "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
>> +          "include/dt-bindings/power/rk3066-power.h" - for RK3066 type power domain.
>> +          "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
>> +          "include/dt-bindings/power/rk3188-power.h" - for RK3188 type power domain.
>> +          "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
>> +          "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
>> +          "include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
>> +          "include/dt-bindings/power/rk3366-power.h" - for RK3366 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.
>> +        maxItems: 1
>> +
>> +      clocks:
>> +        description: |
>> +          A number of phandles to clocks that need to be enabled while power domain
>> +          switches state.
>> +      pm_qos:
>> +        description: |
>> +          A number of phandles to qos blocks which need to be saved and restored
>> +          while power domain switches state.
>> +
>> +      power-supply: true
>> +
>> +    required:
>> +      - compatible
>> +      - reg
> 
> You need:
> 
>        additionalProperties: false
> 
> (with indentation). Then you will get a bunch of errors as you are 
> missing a level of nodes. 

Hmm, for some reason adding "additionalProperties: false" with indentation,
doesn't give me any error. I'll double check my environment but I might be
something silly.

> The 'power-controller' node doesn't have 
> 'reg' for example. You'll need to use 'patternProperties' with '^pd_'.
> 
> And to describe the nested power domains, you have to describe yet 
> another level. You can do a $ref with something like:
> 
> $ref: '#/properties/power-controller/patternProperties/^pd_'
> 
> That creates a circular reference though and I'm not sure what will 
> happen. :)
> 
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/rk3399-cru.h>
>> +    #include <dt-bindings/power/rk3399-power.h>
>> +
>> +    soc {
>> +        #address-cells = <2>;
>> +        #size-cells = <2>;
>> +
>> +        qos_iep: qos@ffa98000 {
>> +            compatible = "syscon";
> 
> This will generate a warning now. 'syscon' should not be used alone.
> 

What to do in such cases? I mean the rk3399.dtsi device-tree is like this, so
wrong, should I create a new compatible?

Thanks,
Enric

>> +            reg = <0x0 0xffa98000 0x0 0x20>;
>> +        };
>> +
>> +        qos_rga_r: qos@ffab0000 {
>> +            compatible = "syscon";
>> +            reg = <0x0 0xffab0000 0x0 0x20>;
>> +        };
>> +
>> +        qos_rga_w: qos@ffab0080 {
>> +            compatible = "syscon";
>> +            reg = <0x0 0xffab0080 0x0 0x20>;
>> +        };
>> +
>> +        qos_video_m0: qos@ffab8000 {
>> +            compatible = "syscon";
>> +            reg = <0x0 0xffab8000 0x0 0x20>;
>> +        };
>> +
>> +        qos_video_m1_r: qos@ffac0000 {
>> +            compatible = "syscon";
>> +            reg = <0x0 0xffac0000 0x0 0x20>;
>> +        };
>> +
>> +        qos_video_m1_w: qos@ffac0080 {
>> +            compatible = "syscon";
>> +            reg = <0x0 0xffac0080 0x0 0x20>;
>> +        };
>> +
>> +        power-management@ff310000 {
>> +            compatible = "rockchip,rk3399-pmu", "syscon", "simple-mfd";
>> +            reg = <0x0 0xff310000 0x0 0x1000>;
>> +
>> +            power-controller {
>> +                compatible = "rockchip,rk3399-power-controller";
>> +                #power-domain-cells = <1>;
>> +                #address-cells = <1>;
>> +                #size-cells = <0>;
>> +
>> +                /* These power domains are grouped by VD_CENTER */
>> +                pd_iep@RK3399_PD_IEP {
>> +                    reg = <RK3399_PD_IEP>;
>> +                    clocks = <&cru ACLK_IEP>,
>> +                             <&cru HCLK_IEP>;
>> +                    pm_qos = <&qos_iep>;
>> +                };
>> +                pd_rga@RK3399_PD_RGA {
>> +                    reg = <RK3399_PD_RGA>;
>> +                    clocks = <&cru ACLK_RGA>,
>> +                             <&cru HCLK_RGA>;
>> +                    pm_qos = <&qos_rga_r>,
>> +                             <&qos_rga_w>;
>> +                };
>> +                pd_vcodec@RK3399_PD_VCODEC {
>> +                    reg = <RK3399_PD_VCODEC>;
>> +                    clocks = <&cru ACLK_VCODEC>,
>> +                             <&cru HCLK_VCODEC>;
>> +                    pm_qos = <&qos_video_m0>;
>> +                };
>> +                pd_vdu@RK3399_PD_VDU {
>> +                    reg = <RK3399_PD_VDU>;
>> +                    clocks = <&cru ACLK_VDU>,
>> +                             <&cru HCLK_VDU>;
>> +                    pm_qos = <&qos_video_m1_r>,
>> +                             <&qos_video_m1_w>;
>> +                };
>> +            };
>> +        };
>> +    };
>

Patch
diff mbox series

diff --git a/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
new file mode 100644
index 000000000000..af50cf2b3e63
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/rockchip,power-controller.yaml
@@ -0,0 +1,154 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/rockchip,power-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip Power Domains
+
+maintainers:
+  - Caesar Wang <wxt@rock-chips.com>
+  - Heiko Stuebner <heiko@sntech.de>
+
+description: |
+  Rockchip processors include support for multiple power domains which can be
+  powered up/down by software based on different application scenes to save power.
+
+  Power domains contained within power-controller node are generic power domain
+  providers documented in Documentation/devicetree/bindings/power/power-domain.yaml.
+
+  IP cores belonging to a power domain should contain a 'power-domains'
+  property that is a phandle for the power domain node representing the domain.
+
+properties:
+  power-controller:
+    type: object
+    description: List of power domains provided by this controller.
+
+    properties:
+      compatible:
+        enum:
+          - rockchip,px30-power-controller
+          - rockchip,rk3036-power-controller
+          - rockchip,rk3066-power-controller
+          - rockchip,rk3128-power-controller
+          - rockchip,rk3188-power-controller
+          - rockchip,rk3228-power-controller
+          - rockchip,rk3288-power-controller
+          - rockchip,rk3328-power-controller
+          - rockchip,rk3366-power-controller
+          - rockchip,rk3368-power-controller
+          - rockchip,rk3399-power-controller
+
+      reg:
+        description: |
+          Power domain index. Valid values are defined in:
+          "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
+          "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
+          "include/dt-bindings/power/rk3066-power.h" - for RK3066 type power domain.
+          "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
+          "include/dt-bindings/power/rk3188-power.h" - for RK3188 type power domain.
+          "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
+          "include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
+          "include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
+          "include/dt-bindings/power/rk3366-power.h" - for RK3366 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.
+        maxItems: 1
+
+      clocks:
+        description: |
+          A number of phandles to clocks that need to be enabled while power domain
+          switches state.
+      pm_qos:
+        description: |
+          A number of phandles to qos blocks which need to be saved and restored
+          while power domain switches state.
+
+      power-supply: true
+
+    required:
+      - compatible
+      - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/rk3399-cru.h>
+    #include <dt-bindings/power/rk3399-power.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        qos_iep: qos@ffa98000 {
+            compatible = "syscon";
+            reg = <0x0 0xffa98000 0x0 0x20>;
+        };
+
+        qos_rga_r: qos@ffab0000 {
+            compatible = "syscon";
+            reg = <0x0 0xffab0000 0x0 0x20>;
+        };
+
+        qos_rga_w: qos@ffab0080 {
+            compatible = "syscon";
+            reg = <0x0 0xffab0080 0x0 0x20>;
+        };
+
+        qos_video_m0: qos@ffab8000 {
+            compatible = "syscon";
+            reg = <0x0 0xffab8000 0x0 0x20>;
+        };
+
+        qos_video_m1_r: qos@ffac0000 {
+            compatible = "syscon";
+            reg = <0x0 0xffac0000 0x0 0x20>;
+        };
+
+        qos_video_m1_w: qos@ffac0080 {
+            compatible = "syscon";
+            reg = <0x0 0xffac0080 0x0 0x20>;
+        };
+
+        power-management@ff310000 {
+            compatible = "rockchip,rk3399-pmu", "syscon", "simple-mfd";
+            reg = <0x0 0xff310000 0x0 0x1000>;
+
+            power-controller {
+                compatible = "rockchip,rk3399-power-controller";
+                #power-domain-cells = <1>;
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                /* These power domains are grouped by VD_CENTER */
+                pd_iep@RK3399_PD_IEP {
+                    reg = <RK3399_PD_IEP>;
+                    clocks = <&cru ACLK_IEP>,
+                             <&cru HCLK_IEP>;
+                    pm_qos = <&qos_iep>;
+                };
+                pd_rga@RK3399_PD_RGA {
+                    reg = <RK3399_PD_RGA>;
+                    clocks = <&cru ACLK_RGA>,
+                             <&cru HCLK_RGA>;
+                    pm_qos = <&qos_rga_r>,
+                             <&qos_rga_w>;
+                };
+                pd_vcodec@RK3399_PD_VCODEC {
+                    reg = <RK3399_PD_VCODEC>;
+                    clocks = <&cru ACLK_VCODEC>,
+                             <&cru HCLK_VCODEC>;
+                    pm_qos = <&qos_video_m0>;
+                };
+                pd_vdu@RK3399_PD_VDU {
+                    reg = <RK3399_PD_VDU>;
+                    clocks = <&cru ACLK_VDU>,
+                             <&cru HCLK_VDU>;
+                    pm_qos = <&qos_video_m1_r>,
+                             <&qos_video_m1_w>;
+                };
+            };
+        };
+    };
diff --git a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt b/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
deleted file mode 100644
index 8304eceb62e4..000000000000
--- a/Documentation/devicetree/bindings/soc/rockchip/power_domain.txt
+++ /dev/null
@@ -1,136 +0,0 @@ 
-* Rockchip Power Domains
-
-Rockchip processors include support for multiple power domains which can be
-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,px30-power-controller" - for PX30 SoCs.
-	"rockchip,rk3036-power-controller" - for RK3036 SoCs.
-	"rockchip,rk3066-power-controller" - for RK3066 SoCs.
-	"rockchip,rk3128-power-controller" - for RK3128 SoCs.
-	"rockchip,rk3188-power-controller" - for RK3188 SoCs.
-	"rockchip,rk3228-power-controller" - for RK3228 SoCs.
-	"rockchip,rk3288-power-controller" - for RK3288 SoCs.
-	"rockchip,rk3328-power-controller" - for RK3328 SoCs.
-	"rockchip,rk3366-power-controller" - for RK3366 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.
-- #size-cells: Should be 0.
-
-Required properties for power domain sub nodes:
-- reg: index of the power domain, should use macros in:
-	"include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
-	"include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
-	"include/dt-bindings/power/rk3066-power.h" - for RK3066 type power domain.
-	"include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
-	"include/dt-bindings/power/rk3188-power.h" - for RK3188 type power domain.
-	"include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
-	"include/dt-bindings/power/rk3288-power.h" - for RK3288 type power domain.
-	"include/dt-bindings/power/rk3328-power.h" - for RK3328 type power domain.
-	"include/dt-bindings/power/rk3366-power.h" - for RK3366 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.
-- pm_qos (optional): phandles to qos blocks which need to be saved and restored
-	while power domain switches state.
-
-Qos Example:
-
-	qos_gpu: qos_gpu@ffaf0000 {
-		compatible ="syscon";
-		reg = <0x0 0xffaf0000 0x0 0x20>;
-	};
-
-Example:
-
-	power: power-controller {
-		compatible = "rockchip,rk3288-power-controller";
-		#power-domain-cells = <1>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		pd_gpu {
-			reg = <RK3288_PD_GPU>;
-			clocks = <&cru ACLK_GPU>;
-			pm_qos = <&qos_gpu>;
-		};
-	};
-
-	 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>;
-                };
-        };
-
-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/px30-power.h" - for px30 type power domain.
-	"include/dt-bindings/power/rk3036-power.h" - for rk3036 type power domain.
-	"include/dt-bindings/power/rk3128-power.h" - for rk3128 type power domain.
-	"include/dt-bindings/power/rk3128-power.h" - for rk3228 type power domain.
-	"include/dt-bindings/power/rk3288-power.h" - for rk3288 type power domain.
-	"include/dt-bindings/power/rk3328-power.h" - for rk3328 type power domain.
-	"include/dt-bindings/power/rk3366-power.h" - for rk3366 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:
-
-	node {
-		/* ... */
-		power-domains = <&power RK3288_PD_GPU>;
-		/* ... */
-	};
-
-	node {
-                /* ... */
-                power-domains = <&power RK3368_PD_GPU_1>;
-                /* ... */
-        };
-
-	node {
-		/* ... */
-		power-domains = <&power RK3399_PD_VOPB>;
-		/* ... */
-	};