[RFC 1/4] dt-bindings: clock: qcom,dispcc: document power domain bindings

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

SM8250 requires special power domain for accessing MMDS_GDSC registers.
Add bindings for the MMCX power domain.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 .../bindings/clock/qcom,dispcc.yaml           | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,dispcc.yaml b/Documentation/devicetree/bindings/clock/qcom,dispcc.yaml
index 0b905a4e9ada..6325d9969913 100644
--- a/Documentation/devicetree/bindings/clock/qcom,dispcc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,dispcc.yaml
@@ -66,6 +66,16 @@ properties:
   reg:
     maxItems: 1
 
+  power-domains:
+    maxItems: 1
+
+  power-domain-names:
+    items:
+      - const: mmcx
+
+  required-opps:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -81,6 +91,7 @@ examples:
   - |
     #include <dt-bindings/clock/qcom,gcc-sdm845.h>
     #include <dt-bindings/clock/qcom,rpmh.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
     clock-controller@af00000 {
       compatible = "qcom,sdm845-dispcc";
       reg = <0x0af00000 0x10000>;
@@ -105,5 +116,22 @@ examples:
       #clock-cells = <1>;
       #reset-cells = <1>;
       #power-domain-cells = <1>;
+      /* this is a part of sm8250 setup the power domain example */
+      power-domains = <&rpmhpd SDM845_CX>;
+      power-domain-names = "mmcx";
+      required-opps = <&rpmhpd_opp_low_svs>;
+    };
+    rpmhpd: power-controller {
+      compatible = "qcom,sdm845-rpmhpd";
+      #power-domain-cells = <1>;
+      operating-points-v2 = <&rpmhpd_opp_table>;
+
+      rpmhpd_opp_table: opp-table {
+        compatible = "operating-points-v2";
+
+        rpmhpd_opp_low_svs: opp3 {
+          opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+        };
+      };
     };
 ...
-- 
2.28.0