linux-kernel - [PATCH RESEND v2 2/4] dt-bindings: display/msm/gmu: Document RGMU

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Message-ID: <20241213-qcs615-gpu-dt-v2-2-47f3b312b178@quicinc.com>
Date: Fri, 13 Dec 2024 17:01:04 +0530
From: Akhil P Oommen <quic_akhilpo@...cinc.com>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        Maarten Lankhorst
	<maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Rob Herring <robh@...nel.org>,
        "Krzysztof
 Kozlowski" <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Bjorn
 Andersson" <andersson@...nel.org>
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>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>
Subject: [PATCH RESEND v2 2/4] dt-bindings: display/msm/gmu: Document RGMU

RGMU a.k.a Reduced Graphics Management Unit is a small state machine
with the sole purpose of providing IFPC support. Compared to GMU, it
doesn't manage GPU clock, voltage scaling, bw voting or any other
functionalities. All it does is detect an idle GPU and toggle the
GDSC switch. So it doesn't require iommu & opp table.

Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
---
 Documentation/devicetree/bindings/display/msm/gmu.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
index b1bd372996d57138a0e80f8d93df09943775fdfa..6889dda7d4be71535dff1a62ca30f980bfc6128d 100644
--- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
+++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
@@ -27,6 +27,7 @@ properties:
           - pattern: '^qcom,adreno-gmu-x[1-9][0-9][0-9]\.[0-9]$'
           - const: qcom,adreno-gmu
       - const: qcom,adreno-gmu-wrapper
+      - const: qcom,adreno-rgmu
 
   reg:
     minItems: 1
@@ -267,12 +268,14 @@ allOf:
       properties:
         compatible:
           contains:
-            const: qcom,adreno-gmu-wrapper
+            enum:
+              - qcom,adreno-gmu-wrapper
+              - qcom,adreno-rgmu
     then:
       properties:
         reg:
           items:
-            - description: GMU wrapper register space
+            - description: RGMU/GMU wrapper register space
         reg-names:
           items:
             - const: gmu

-- 
2.45.2