linux-kernel - [PATCH v3 01/15] dt-bindings: display/msm: gpu: Document GMU wrapper-equipped A6xx

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Message-Id: <20230223-topic-gmuwrapper-v3-1-5be55a336819@linaro.org>
Date:   Thu, 23 Feb 2023 13:06:35 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc:     linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v3 01/15] dt-bindings: display/msm: gpu: Document GMU
 wrapper-equipped A6xx

GMU wrapper-equipped A6xx GPUs require clocks and clock-names to be
specified under the GPU node, just like their older cousins.
Account for that.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 .../devicetree/bindings/display/msm/gpu.yaml       | 63 ++++++++++++++++++----
 1 file changed, 53 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
index d4191cca71fb..e6d3160601bc 100644
--- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
@@ -36,10 +36,7 @@ properties:
 
   reg-names:
     minItems: 1
-    items:
-      - const: kgsl_3d0_reg_memory
-      - const: cx_mem
-      - const: cx_dbgc
+    maxItems: 3
 
   interrupts:
     maxItems: 1
@@ -147,26 +144,72 @@ allOf:
                 description: GPU Alternative Memory Interface clock
               - const: gfx3d
                 description: GPU 3D engine clock
+              - const: gmu
+                description: CX GMU clock
               - const: rbbmtimer
                 description: GPU RBBM Timer for Adreno 5xx series
               - const: rbcpr
                 description: GPU RB Core Power Reduction clock
+              - const: xo
+                description: GPUCC clocksource clock
           minItems: 2
-          maxItems: 7
+          maxItems: 9
 
       required:
         - clocks
         - clock-names
+
   - if:
       properties:
         compatible:
           contains:
-            pattern: '^qcom,adreno-6[0-9][0-9]\.[0-9]$'
-
-    then: # Since Adreno 6xx series clocks should be defined in GMU
+            enum:
+              - qcom,adreno-610.0
+              - qcom,adreno-619.1
+    then:
       properties:
-        clocks: false
-        clock-names: false
+        clock-names:
+          items:
+            - const: core
+              description: GPU Core clock
+            - const: iface
+              description: GPU Interface clock
+            - const: mem_iface
+              description: GPU Memory Interface clock
+            - const: alt_mem_iface
+              description: GPU Alternative Memory Interface clock
+            - const: gmu
+              description: CX GMU clock
+            - const: xo
+              description: GPUCC clocksource clock
+
+        reg-names:
+          minItems: 1
+          items:
+            - const: kgsl_3d0_reg_memory
+            - const: cx_dbgc
+
+      required:
+        - clocks
+        - clock-names
+    else:
+      if:
+        properties:
+          compatible:
+            contains:
+              pattern: '^qcom,adreno-6[0-9][0-9]\.[0-9]$'
+
+      then: # Starting with A6xx, the clocks are usually defined in the GMU node
+        properties:
+          clocks: false
+          clock-names: false
+
+          reg-names:
+            minItems: 1
+            items:
+              - const: kgsl_3d0_reg_memory
+              - const: cx_mem
+              - const: cx_dbgc
 
 examples:
   - |

-- 
2.39.2