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Message-ID: <2fb0ba58-c011-7896-9792-005d0ed9ad55@linaro.org>
Date:   Fri, 24 Feb 2023 12:19:58 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        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>
Subject: Re: [PATCH v3 02/15] dt-bindings: display/msm/gmu: Add GMU wrapper

On 23/02/2023 13:06, Konrad Dybcio wrote:
> GMU wrapper is essentially a register space within the GPU, which
> Linux sees as a dumbed-down regular GMU: there's no clocks,
> interrupts, multiple regs, iommus and OPP. Document it.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  .../devicetree/bindings/display/msm/gmu.yaml       | 49 ++++++++++++++++------
>  1 file changed, 37 insertions(+), 12 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/gmu.yaml b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> index ab14e81cb050..021373e686e1 100644
> --- a/Documentation/devicetree/bindings/display/msm/gmu.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/gmu.yaml
> @@ -19,16 +19,18 @@ description: |
>  
>  properties:
>    compatible:
> -    items:
> -      - pattern: '^qcom,adreno-gmu-6[0-9][0-9]\.[0-9]$'
> -      - const: qcom,adreno-gmu
> +    oneOf:
> +      - items:
> +          - pattern: '^qcom,adreno-gmu-6[0-9][0-9]\.[0-9]$'
> +          - const: qcom,adreno-gmu
> +      - const: qcom,adreno-gmu-wrapper

Why wrapper is part of this binding then? Usually wrapper means there is
wrapper node with a GMU child (at least this is what we call for all
wrappers of custom IP blocks like USB DWC). Where is the child?


Best regards,
Krzysztof

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