[PATCH v4 09/52] dt-bindings: clock: qcom: sm8750-gcc: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SM8750 and Kaanapali GCCs 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.

Fixes: 342d2a607450 ("dt-bindings: clock: qcom: Add Kaanapali Global clock controller")
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/clock/qcom,sm8750-gcc.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,sm8750-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm8750-gcc.yaml
index 0114d347b26f..59da3eb2b073 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sm8750-gcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sm8750-gcc.yaml
@@ -34,9 +34,14 @@ 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:
@@ -47,6 +52,7 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,sm8750-gcc";
       reg = <0x00100000 0x001f4200>;
@@ -58,6 +64,7 @@ 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