linux-kernel - Re: [PATCH] arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD

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Message-ID: <20200420163224.GA44571@bogon.m.sigxcpu.org>
Date:   Mon, 20 Apr 2020 18:32:24 +0200
From:   Guido Günther <agx@...xcpu.org>
To:     Shawn Guo <shawnguo@...nel.org>
Cc:     Rob Herring <robh+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>,
        "Angus Ainslie (Purism)" <angus@...ea.ca>,
        Martin Kepplinger <martink@...teo.de>,
        Abel Vesa <abel.vesa@....com>,
        Anson Huang <Anson.Huang@....com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mq-librem5-devkit: Use 0.9V for VDD_GPU

Hi,
On Mon, Apr 20, 2020 at 10:54:59PM +0800, Shawn Guo wrote:
> On Thu, Mar 19, 2020 at 05:46:02PM +0100, Guido Günther wrote:
> > According to the imx8mq data sheet running VDD_GPU at 0.9V is enough
> > when not overclocking to 1GHz (which we currently don't do).
> > 
> > Signed-off-by: Guido Günther <agx@...xcpu.org>
> 
> It doesn't apply to my branch.

This was against linux next when i sent it, can you link to the branch
it should apply to please?
 -- Guido

> 
> Shawn
> 
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > index c47a26cf8e43..736b250bc9c2 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
> > @@ -318,7 +318,7 @@
> >  				regulator-min-microvolt = <700000>;
> >  				regulator-max-microvolt = <1300000>;
> >  				regulator-always-on;
> > -				rohm,dvs-run-voltage = <1000000>;
> > +				rohm,dvs-run-voltage = <900000>;
> >  			};
> >  
> >  			buck4_reg: BUCK4 {
> > -- 
> > 2.23.0
> > 
>