[PATCH v7 04/10] dt-bindings: soc: google: gs101-pmu: allow power domains as children

[André Draszik]

The power domains are a property of / implemented in the PMU. As such,
they should be modelled as child nodes of the PMU.

Signed-off-by: André Draszik <andre.draszik@xxxxxxxxxx>
---
v7:
- really be consistent with quoting (Krzysztof)
- drop invalid tested-by tag (Krzysztof)

v4:
- consistent quoting using " (Krzysztof)
- add samsung,dtzpc to example

Note:
Because the properties added are 'required', this commit breaks DT
validation of the existing DT for Pixel 6, but a) that's simply because
the DT is incomplete and b) a DT update will be posted once the binding
is accepted.
It is not possible to write the binding such that it supports old
(incomplete) DTs in addition to the full version, but as per above
it's not required to keep supporting old DTs.
---
 .../bindings/soc/google/google,gs101-pmu.yaml      | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml b/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
index a06bd8ec3c20..dfe6f87e5949 100644
--- a/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
+++ b/Documentation/devicetree/bindings/soc/google/google,gs101-pmu.yaml
@@ -16,6 +16,14 @@ properties:
   reg:
     maxItems: 1
 
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
   reboot-mode:
     $ref: /schemas/power/reset/syscon-reboot-mode.yaml
     type: object
@@ -39,9 +47,23 @@ properties:
     description:
       Phandle to PMU interrupt generation interface.
 
+patternProperties:
+  "^power-domain@[0-9a-f]+$":
+    type: object
+    description: Child node describing one power domain within the PMU
+
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: google,gs101-pd
+
 required:
   - compatible
   - reg
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
   - google,pmu-intr-gen-syscon
 
 additionalProperties: false
@@ -51,6 +73,25 @@ examples:
     system-controller@17460000 {
         compatible = "google,gs101-pmu";
         reg = <0x17460000 0x10000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
 
         google,pmu-intr-gen-syscon = <&pmu_intr_gen>;
+
+        pd_g3d: power-domain@1e00 {
+            compatible = "google,gs101-pd";
+            reg = <0x1e00 0x80>;
+            #power-domain-cells = <0>;
+            label = "g3d";
+            samsung,dtzpc = <&pd_g3d>;
+        };
+
+        power-domain@2000 {
+            compatible = "google,gs101-pd";
+            reg = <0x2000 0x80>;
+            #power-domain-cells = <0>;
+            power-domains = <&pd_g3d>;
+            label = "embedded_g3d";
+        };
     };

-- 
2.53.0.473.g4a7958ca14-goog