[PATCH v4 13/52] dt-bindings: clock: qcom: qdu1000-gcc: Add CX power domain

[Abel Vesa]

The GDSCs provided by the QDU1000 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,qdu1000-gcc.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,qdu1000-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,qdu1000-gcc.yaml
index 2c5a9ef4fe4d..3f2452d0c09e 100644
--- a/Documentation/devicetree/bindings/clock/qcom,qdu1000-gcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,qdu1000-gcc.yaml
@@ -28,9 +28,14 @@ properties:
       - description: PCIE 0 Phy Auxiliary 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:
@@ -41,12 +46,14 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@100000 {
       compatible = "qcom,qdu1000-gcc";
       reg = <0x00100000 0x001f4200>;
       clocks = <&rpmhcc RPMH_CXO_CLK>, <&sleep_clk>,
                <&pcie_0_pipe_clk>, <&pcie_0_phy_aux_clk>,
                <&usb3_phy_wrapper_pipe_clk>;
+      power-domains = <&rpmhpd QDU1000_CX>;
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;

-- 
2.54.0