linux-kernel - Re: [PATCH 1/3] arm64: dts: imx8mm: Reduce GPU to nominal speed

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Message-ID: <20231214022250.GY270430@dragon>
Date:   Thu, 14 Dec 2023 10:22:50 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Adam Ford <aford173@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org, aford@...conembedded.com,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Frieder Schrempf <frieder.schrempf@...tron.de>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] arm64: dts: imx8mm: Reduce GPU to nominal speed

On Tue, Nov 28, 2023 at 02:02:16PM -0600, Adam Ford wrote:
> When the GPU nodes were added, the GPU_PLL_OUT was configured
> for 1000MHz, but this requires the SoC to run in overdrive mode
> which requires an elevated voltage operating point.
> 
> Since this may run some boards out of spec, the default clock
> should be set to 800MHz for nominal operating mode. Boards
> that run at the higher voltage can update their clocks
> accordingly.
> 
> Fixes: 4523be8e46be ("arm64: dts: imx8mm: Add GPU nodes for 2D and 3D core")
> Signed-off-by: Adam Ford <aford173@...il.com>

Applied all, thanks!