linux-kernel - Re: [PATCH v2] arm64: dts: qcom: sm8250-edo: Panel framebuffer is 2.5k instead of 4k

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Date:   Wed, 7 Jun 2023 00:52:37 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>,
        phone-devel@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: qcom: sm8250-edo: Panel framebuffer is
 2.5k instead of 4k



On 6.06.2023 23:14, Marijn Suijten wrote:
> The framebuffer configuration for edo pdx203, written in edo dtsi (which
> is overwritten in pdx206 dts for its smaller panel) has to use a
> 1096x2560 configuration as this is what the panel (and framebuffer area)
> has been initialized to.  Downstream userspace also has access to (and
> uses) this 2.5k mode by default, and only switches the panel to 4k when
> requested.
> 
> This is similar to commit be8de06dc397 ("arm64: dts: qcom:
> sm8150-kumano: Panel framebuffer is 2.5k instead of 4k") which fixed the
> same for the previous generation Sony platform.
> 
> Fixes: 69cdb97ef652 ("arm64: dts: qcom: sm8250: Add support for SONY Xperia 1 II / 5 II (Edo platform)")
> Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
> ---
And so I derped again.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
> 
> Changes since v2:
> - Rename griffin (copy-paste from related patch) to pdx203 in comment.
> 
>  arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo.dtsi | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo.dtsi b/arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo.dtsi
> index 3d22be747f042..8f867f841cb83 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo.dtsi
> @@ -54,9 +54,10 @@ chosen {
>  		framebuffer: framebuffer@...00000 {
>  			compatible = "simple-framebuffer";
>  			reg = <0 0x9c000000 0 0x2300000>;
> -			width = <1644>;
> -			height = <3840>;
> -			stride = <(1644 * 4)>;
> +			/* pdx203 BL initializes in 2.5k mode, not 4k */
> +			width = <1096>;
> +			height = <2560>;
> +			stride = <(1096 * 4)>;
>  			format = "a8r8g8b8";
>  		};
>  	};