[PATCH v4 03/52] dt-bindings: clock: qcom: gcc-sm8250: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SM8250 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-sm8250.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc-sm8250.yaml b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8250.yaml
index f4cd5a509c60..5f9aae728245 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc-sm8250.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8250.yaml
@@ -32,10 +32,15 @@ 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:
@@ -46,6 +51,7 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,gcc-sm8250";
       reg = <0x00100000 0x1f0000>;
@@ -53,6 +59,7 @@ examples:
                <&rpmhcc RPMH_CXO_CLK_A>,
                <&sleep_clk>;
       clock-names = "bi_tcxo", "bi_tcxo_ao", "sleep_clk";
+      power-domains = <&rpmhpd RPMHPD_CX>;
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;

-- 
2.54.0