[PATCH v4 07/52] dt-bindings: clock: qcom: sm8550-gcc: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SM8550 GCC are supplied by the RPMh CX power
domain. Model that parent domain in the GCC binding so the provider can
describe the dependency in devicetree.

Add a single CX power-domain entry to the binding and make it required.
Without this dependency, GCC GDSC consumers cannot vote for CX and RPMh may
undervolt it.

Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/clock/qcom,sm8550-gcc.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8550-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8550-gcc.yaml
index c4e9b9bb63f5..f9423aff5dea 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sm8550-gcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sm8550-gcc.yaml
@@ -31,9 +31,14 @@ properties:
       - description: UFS Phy Tx symbol 0 clock source
       - description: USB3 Phy wrapper pipe clock source
 
+  power-domains:
+    items:
+      - description: CX power domain
+
 required:
   - compatible
   - clocks
+  - power-domains
   - '#power-domain-cells'
 
 allOf:
@@ -44,6 +49,7 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,sm8550-gcc";
       reg = <0x00100000 0x001f4200>;
@@ -55,6 +61,7 @@ examples:
                <&ufs_mem_phy 1>,
                <&ufs_mem_phy 2>,
                <&usb_1_qmpphy>;
+      power-domains = <&rpmhpd RPMHPD_CX>;
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;

-- 
2.54.0