[PATCH v4 14/52] dt-bindings: clock: qcom: sdx75-gcc: Add CX power domain

[Abel Vesa]

The GDSCs provided by the SDX75 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,sdx75-gcc.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,sdx75-gcc.yaml b/Documentation/devicetree/bindings/clock/qcom,sdx75-gcc.yaml
index 29a0b29bcb81..75a38e9f3248 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sdx75-gcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sdx75-gcc.yaml
@@ -38,9 +38,14 @@ properties:
       - description: PCIE Pipe 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:
@@ -51,6 +56,7 @@ unevaluatedProperties: false
 examples:
   - |
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
     clock-controller@80000 {
       compatible = "qcom,sdx75-gcc";
       reg = <0x80000 0x1f7400>;
@@ -59,6 +65,7 @@ examples:
                <&emac1_sgmiiphy_mac_rclk>, <&emac1_sgmiiphy_mac_tclk>, <&emac1_sgmiiphy_rclk>,
                <&emac1_sgmiiphy_tclk>, <&pcie20_phy_aux_clk>, <&pcie_1_pipe_clk>,
                <&pcie_2_pipe_clk>, <&pcie_pipe_clk>, <&usb3_phy_wrapper_gcc_usb30_pipe_clk>;
+      power-domains = <&rpmhpd RPMHPD_CX>;
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;

-- 
2.54.0