linux-kernel - [PATCH 1/2] dt-bindings: clock: sm6375-gpucc: Add VDD

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Message-Id: <20230529-topic-sm6375gpuccpd-v1-1-8d57c41a6066@linaro.org>
Date:   Mon, 29 May 2023 15:14:23 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 1/2] dt-bindings: clock: sm6375-gpucc: Add VDD_GX

The GPUCC block on SM6375 is powered by VDD_CX and VDD_GX. If the latter
rail is not online, GX_GDSC will never turn on. Describe the missing
handles.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 .../devicetree/bindings/clock/qcom,sm6375-gpucc.yaml      | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,sm6375-gpucc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm6375-gpucc.yaml
index b480ead5bd69..cf4cad76f6c9 100644
--- a/Documentation/devicetree/bindings/clock/qcom,sm6375-gpucc.yaml
+++ b/Documentation/devicetree/bindings/clock/qcom,sm6375-gpucc.yaml
@@ -27,9 +27,21 @@ properties:
       - description: GPLL0 div branch source
       - description: SNoC DVM GFX source
 
+  power-domains:
+    description:
+      A phandle and PM domain specifier for the VDD_GX power rail
+    maxItems: 1
+
+  required-opps:
+    description:
+      A phandle to an OPP node describing required VDD_GX performance point.
+    maxItems: 1
+
 required:
   - compatible
   - clocks
+  - power-domains
+  - required-opps
 
 allOf:
   - $ref: qcom,gcc.yaml#
@@ -40,6 +52,7 @@ examples:
   - |
     #include <dt-bindings/clock/qcom,sm6375-gcc.h>
     #include <dt-bindings/clock/qcom,rpmcc.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
 
     soc {
         #address-cells = <2>;
@@ -52,6 +65,8 @@ examples:
                      <&gcc GCC_GPU_GPLL0_CLK_SRC>,
                      <&gcc GCC_GPU_GPLL0_DIV_CLK_SRC>,
                      <&gcc GCC_GPU_SNOC_DVM_GFX_CLK>;
+            power-domains = <&rpmpd SM6375_VDDGX>;
+            required-opps = <&rpmpd_opp_low_svs>;
             #clock-cells = <1>;
             #reset-cells = <1>;
             #power-domain-cells = <1>;

-- 
2.40.1