linux-kernel - Re: [PATCH v4 11/19] arm64: dts: mediatek: mt8192-asurada: Fix voltage constraint for Vgpu

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Date:   Thu, 2 Mar 2023 17:57:31 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     matthias.bgg@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v4 11/19] arm64: dts: mediatek: mt8192-asurada: Fix
 voltage constraint for Vgpu

On Wed, Mar 1, 2023 at 5:55 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> The MT8192 SoC specifies a maximum voltage for the GPU's digital supply
> of 0.88V and the GPU OPPs are declaring a maximum voltage of 0.80V.
>
> In order to keep the GPU voltage in the safe range, change the maximum
> voltage for mt6315@7's vbuck1 to 0.80V as sending, for any mistake,
> 1.193V would be catastrophic.
>
> Fixes: 3183cb62b033 ("arm64: dts: mediatek: asurada: Add SPMI regulators")
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Reviewed-by: Chen-yu Tsai <wenst@...omium.org>