linux-kernel - Re: [PATCH V2 4/4] arm64: dts: imx8mp: Configure VPU clocks for overdrive

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Message-ID: <20250612131646.be2mad2hqeh33wqx@pengutronix.de>
Date: Thu, 12 Jun 2025 15:16:46 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: Adam Ford <aford173@...il.com>
Cc: linux-arm-kernel@...ts.infradead.org, aford@...conembedded.com,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 4/4] arm64: dts: imx8mp: Configure VPU clocks for
 overdrive

On 25-06-11, Adam Ford wrote:
> The defaults for this SoC are configured for overdrive mode, but
> the VPU clocks are currently configured for nominal mode.
> Increase VPU_G1_CLK_ROOT to 800MHZ from 600MHz,
> Increase VPU_G2_CLK_ROOT to 700MHZ from 500MHz, and
> Increase VPU_BUS_CLK_ROOT to 800MHz from 600MHz.
> 
> This requires adjusting the clock parents. Since there is already
> 800MHz clock references, move the VPU_BUS and G1 clocks to it.
> This frees up the VPU_PLL to be configured at 700MHz to run
> the G2 clock at 700MHz.
> 
> Signed-off-by: Adam Ford <aford173@...il.com>

Reviewed-by: Marco Felsch <m.felsch@...gutronix.de>