linux-kernel - Re: [PATCH v1 07/12] arm64: dts: librem5-devkit: add the regulators for DVFS

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Date:   Mon, 17 Feb 2020 12:08:02 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Martin Kepplinger <martin.kepplinger@...i.sm>
Cc:     robh@...nel.org, mark.rutland@....com, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        Anson.Huang@....com, devicetree@...r.kernel.org, kernel@...i.sm,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        "Angus Ainslie (Purism)" <angus@...ea.ca>
Subject: Re: [PATCH v1 07/12] arm64: dts: librem5-devkit: add the regulators
 for DVFS

On Wed, Feb 05, 2020 at 03:29:58PM +0100, Martin Kepplinger wrote:
> From: "Angus Ainslie (Purism)" <angus@...ea.ca>
> 
> Specify which regulator is used for cpufreq DVFS.
> 
> Signed-off-by: Angus Ainslie (Purism) <angus@...ea.ca>
> ---
>  .../dts/freescale/imx8mq-librem5-devkit.dts   | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> index ac0145839a69..6a8f6cee96cf 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> @@ -223,6 +223,26 @@
>  	};
>  };
>  
> +&A53_0 {
> +	operating-points-v2 = <&a53_opp_table>;

The property has already been set in imx8mq.dtsi.

Shawn

> +	cpu-supply = <&buck2_reg>;
> +};
> +
> +&A53_1 {
> +	operating-points-v2 = <&a53_opp_table>;
> +	cpu-supply = <&buck2_reg>;
> +};
> +
> +&A53_2 {
> +	operating-points-v2 = <&a53_opp_table>;
> +	cpu-supply = <&buck2_reg>;
> +};
> +
> +&A53_3 {
> +	operating-points-v2 = <&a53_opp_table>;
> +	cpu-supply = <&buck2_reg>;
> +};
> +
>  &clk {
>  	assigned-clocks = <&clk IMX8MQ_AUDIO_PLL1>, <&clk IMX8MQ_AUDIO_PLL2>;
>  	assigned-clock-rates = <786432000>, <722534400>;
> -- 
> 2.20.1
>