[PATCH v4 05/52] dt-bindings: clock: qcom: gcc-sm8450: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SM8450 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-sm8450.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc-sm8450.yaml b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8450.yaml
index 3169ac05e1d8..793ee9e3ff10 100644
--- a/Documentation/devicetree/bindings/clock/qcom,gcc-sm8450.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8450.yaml
@@ -47,10 +47,15 @@ properties:
       - const: usb3_phy_wrapper_gcc_usb30_pipe_clk # Optional clock
     minItems: 2
 
+  power-domains:
+    items:
+      - description: CX power domain
+
 required:
   - compatible
   - clocks
   - clock-names
+  - power-domains
   - '#power-domain-cells'
 
 allOf:
@@ -61,11 +66,13 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,gcc-sm8450";
       reg = <0x00100000 0x001f4200>;
       clocks = <&rpmhcc RPMH_CXO_CLK>, <&sleep_clk>;
       clock-names = "bi_tcxo", "sleep_clk";
+      power-domains = <&rpmhpd RPMHPD_CX>;
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;

-- 
2.54.0