[PATCH v4 11/52] dt-bindings: clock: qcom: gcc-sm6350: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SM6350 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,gcc-sm6350.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc-sm6350.yaml b/Documentation/devicetree/bindings/clock/qcom,gcc-sm6350.yaml
index 819e855eaf9a..098a108b8123 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc-sm6350.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc-sm6350.yaml
@@ -31,10 +31,15 @@ properties:
       - const: bi_tcxo_ao
       - const: sleep_clk
 
+  power-domains:
+    items:
+      - description: CX power domain
+
 required:
   - compatible
   - clocks
   - clock-names
+  - power-domains
   - '#power-domain-cells'
 
 allOf:
@@ -45,12 +50,14 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,gcc-sm6350";
       reg = <0x00100000 0x1f0000>;
       clocks = <&rpmhcc RPMH_CXO_CLK>,
                <&rpmhcc RPMH_CXO_CLK_A>,
                <&sleep_clk>;
+      power-domains = <&rpmhpd RPMHPD_CX>;
       clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk";
       #clock-cells = <1>;
       #reset-cells = <1>;

-- 
2.54.0