linux-kernel - Re: [PATCH 1/2] arm64: dts: imx8mm-evk: add phy-reset-gpios for fec1

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Date:   Mon, 21 Oct 2019 11:50:13 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Peng Fan <peng.fan@....com>
Cc:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Andy Duan <fugang.duan@....com>, Jacky Bai <ping.bai@....com>,
        Anson Huang <anson.huang@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        Leonard Crestez <leonard.crestez@....com>,
        Daniel Baluta <daniel.baluta@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, Jun Li <jun.li@....com>
Subject: Re: [PATCH 1/2] arm64: dts: imx8mm-evk: add phy-reset-gpios for fec1

On 19-10-21 09:46, Peng Fan wrote:
> > Subject: Re: [PATCH 1/2] arm64: dts: imx8mm-evk: add phy-reset-gpios for
> > fec1
> > 
> > Hi,
> > 
> > On 19-10-21 09:21, Peng Fan wrote:
> > > From: Peng Fan <peng.fan@....com>
> > >
> > > We should not rely on U-Boot to configure the phy reset.

nitpick: s/U-Boot/bootloader/ ?

> > > So introduce phy-reset-gpios property to let Linux handle phy reset
> > > itself.
> > >
> > > Signed-off-by: Peng Fan <peng.fan@....com>
> > > ---
> > >  arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 1 +
> > >  1 file changed, 1 insertion(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > index faefb7182af1..e4d66f7db09d 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
> > > @@ -80,6 +80,7 @@
> > >  	pinctrl-0 = <&pinctrl_fec1>;
> > >  	phy-mode = "rgmii-id";
> > >  	phy-handle = <&ethphy0>;
> > > +	phy-reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
> > 
> > Where is the pinctrl done?
> 
> https://elixir.bootlin.com/linux/v5.4-rc2/source/arch/arm64/boot/dts/freescale/imx8mm-evk.dts#L328

Thanks :)

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

Regards,
  Marco 

> Regards,
> Peng.
> 
> > 
> > Regards,
> >   Marco
> > 
> > >  	fsl,magic-packet;
> > >  	status = "okay";
> > >
> > > --
> > > 2.16.4
> > >
> > >
> > >
> > 
> > --
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