linux-kernel - Re: [PATCH 5/8] dt-bindings: drm/msm/gpu: Document AON clock for A506/A510

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Date: Mon, 22 Jan 2024 09:51:59 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Adam Skladowski <a39.skl@...il.com>
Cc: phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
 Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>,
 Marijn Suijten <marijn.suijten@...ainline.org>,
 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>, Andy Gross <agross@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>,
 Krishna Manikandan <quic_mkrishn@...cinc.com>,
 linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/8] dt-bindings: drm/msm/gpu: Document AON clock for
 A506/A510

On 21/01/2024 20:41, Adam Skladowski wrote:
> Adreno 506(MSM8953) and Adreno 510(MSM8976) require
> Always-on branch clock to be enabled, describe it.
> 
> Signed-off-by: Adam Skladowski <a39.skl@...il.com>
> ---
>  Documentation/devicetree/bindings/display/msm/gpu.yaml | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/gpu.yaml b/Documentation/devicetree/bindings/display/msm/gpu.yaml
> index b019db954793..9e36f54a5caf 100644
> --- a/Documentation/devicetree/bindings/display/msm/gpu.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/gpu.yaml
> @@ -133,7 +133,7 @@ allOf:
>        properties:
>          clocks:
>            minItems: 2
> -          maxItems: 7
> +          maxItems: 8

I would prefer we start enforcing the order. The initial flexibility was
because of conversion from the old bindings and dealing with some
technical debt, AFAIU.

This is requirement of new clock, so maybe better add dedicated if:then
case which will be enforcing the order with always-on at the end.

Best regards,
Krzysztof