linux-kernel - Re: [PATCH 3/4] arm64: dts: imx8mp-nominal: Explicitly configure nominal VPU clocks

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Message-ID: <1214db7b-dc79-4a3a-a1cc-0b09b3216d30@pengutronix.de>
Date: Mon, 2 Jun 2025 07:58:06 +0200
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Adam Ford <aford173@...il.com>, linux-arm-kernel@...ts.infradead.org
Cc: Rob Herring <robh@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 aford@...conembedded.com, m.felsch@...gutronix.de, imx@...ts.linux.dev,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] arm64: dts: imx8mp-nominal: Explicitly configure
 nominal VPU clocks

Hello Adam,

On 31.05.25 00:17, Adam Ford wrote:
> In preparation for increasing the default VPU clocks to overdrive,
> configure the nominal values first to avoid running the nominal
> devices out of spec when imx8mp.dtsi is changed.

Thanks for keeping imx8mp-nominal.dtsi users in mind.

> 
> Signed-off-by: Adam Ford <aford173@...il.com>

Reviewed-by: Ahmad Fatoum <a.fatoum@...gutronix.de>

Cheers,
Ahmad

> ---
>  .../boot/dts/freescale/imx8mp-nominal.dtsi     | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
> index 2ce1860b244d..f269f7a004fc 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi
> @@ -89,4 +89,22 @@ &media_blk_ctrl {
>  			       <1039500000>;
>  };
>  
> +&vpu_g1 {
> +	assigned-clocks = <&clk IMX8MP_CLK_VPU_G1>;
> +	assigned-clock-parents = <&clk IMX8MP_VPU_PLL_OUT>;
> +	assigned-clock-rates = <600000000>;
> +};
> +
> +&vpu_g2 {
> +	assigned-clocks = <&clk IMX8MP_CLK_VPU_G2>;
> +	assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_1000M>;
> +	assigned-clock-rates = <500000000>;
> +};
> +
> +&vpumix_blk_ctrl {
> +	assigned-clocks = <&clk IMX8MP_VPU_PLL>, <&clk IMX8MP_CLK_VPU_BUS>;
> +	assigned-clock-parents = <0>, <&clk IMX8MP_VPU_PLL_OUT>;
> +	assigned-clock-rates = <600000000>, <600000000>;
> +};
> +
>  /delete-node/ &{noc_opp_table/opp-1000000000};


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