linux-kernel - [PATCH v4 01/10] dt-bindings: display/msm/gmu: Add Adreno 7[34]0 GMU

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Message-Id: <20230628-topic-a7xx_drmmsm-v4-1-8b3e402795c1@linaro.org>
Date:   Tue, 12 Sep 2023 12:04:43 +0200
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>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v4 01/10] dt-bindings: display/msm/gmu: Add Adreno 7[34]0
 GMU

The GMU on the A7xx series is pretty much the same as on the A6xx parts.
It's now "smarter", needs a bit less register writes and controls more
things (like inter-frame power collapse) mostly internally (instead of
us having to write to G[PM]U_[CG]X registers from APPS)

The only difference worth mentioning is the now-required DEMET clock,
which is strictly required for things like asserting reset lines, not
turning it on results in GMU not being fully functional (all OOB requests
would fail and HFI would hang after the first submitted OOB).

Describe the A730 and A740 GMU.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-QRD
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org> # sm8450
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 .../devicetree/bindings/display/msm/gmu.yaml       | 40 +++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
index 5fc4106110ad..20ddb89a4500 100644
--- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
@@ -21,7 +21,7 @@ properties:
   compatible:
     oneOf:
       - items:
-          - pattern: '^qcom,adreno-gmu-6[0-9][0-9]\.[0-9]$'
+          - pattern: '^qcom,adreno-gmu-[67][0-9][0-9]\.[0-9]$'
           - const: qcom,adreno-gmu
       - const: qcom,adreno-gmu-wrapper
 
@@ -213,6 +213,44 @@ allOf:
             - const: axi
             - const: memnoc
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,adreno-gmu-730.1
+              - qcom,adreno-gmu-740.1
+    then:
+      properties:
+        reg:
+          items:
+            - description: Core GMU registers
+            - description: Resource controller registers
+            - description: GMU PDC registers
+        reg-names:
+          items:
+            - const: gmu
+            - const: rscc
+            - const: gmu_pdc
+        clocks:
+          items:
+            - description: GPU AHB clock
+            - description: GMU clock
+            - description: GPU CX clock
+            - description: GPU AXI clock
+            - description: GPU MEMNOC clock
+            - description: GMU HUB clock
+            - description: GPUSS DEMET clock
+        clock-names:
+          items:
+            - const: ahb
+            - const: gmu
+            - const: cxo
+            - const: axi
+            - const: memnoc
+            - const: hub
+            - const: demet
+
   - if:
       properties:
         compatible:

-- 
2.42.0