linux-kernel - Re: [PATCH v2] ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address

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Message-ID: <CABMQnVJsK3wNRQfGjomggKcwL5zaqBchoAKajbVb+ZXmrwn2iQ@mail.gmail.com>
Date: Sat, 6 Sep 2025 00:12:44 +0900
From: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
To: dinguyen@...nel.org, robh+dt@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org
Cc: Andrew Lunn <andrew@...n.ch>, linux-arm-kernel@...ts.infradead.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	stable@...r.kernel.org
Subject: Re: [PATCH v2] ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address

ping?

2025年1月14日(火) 22:50 Nobuhiro Iwamatsu <iwamatsu@...auri.org>:
>
> Hi Dinh,
>
> Could you check and apply this patch?
>
> Thanks,
>   Nobuhiro
>
> 2024年11月21日(木) 16:13 Nobuhiro Iwamatsu <iwamatsu@...auri.org>:
> >
> > On SoCFPGA/Sodia board, mdio bus cannot be probed, so the PHY cannot be
> > found and the network device does not work.
> >
> > ```
> > stmmaceth ff702000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)
> > ```
> >
> > To probe the mdio bus, add "snps,dwmac-mdio" as compatible string of the
> > mdio bus. Also the PHY address connected to this board is 4. Therefore,
> > change to 4.
> >
> > Cc: stable@...r.kernel.org # 6.3+
> > Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@...auri.org>
> > ---
> >  v2: Update commit message from 'ID' to 'address'.
> >      Drop Fixes tag, because that commit is not the cause.
> >
> >  arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 ++++--
> >  1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
> > index ce0d6514eeb571..e4794ccb8e413f 100644
> > --- a/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
> > +++ b/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts
> > @@ -66,8 +66,10 @@ &gmac1 {
> >         mdio0 {
> >                 #address-cells = <1>;
> >                 #size-cells = <0>;
> > -               phy0: ethernet-phy@0 {
> > -                       reg = <0>;
> > +               compatible = "snps,dwmac-mdio";
> > +
> > +               phy0: ethernet-phy@4 {
> > +                       reg = <4>;
> >                         rxd0-skew-ps = <0>;
> >                         rxd1-skew-ps = <0>;
> >                         rxd2-skew-ps = <0>;
> > --
> > 2.45.2
> >
>
>
> --
> Nobuhiro Iwamatsu
>    iwamatsu at {nigauri.org / debian.org / kernel.org}
>    GPG ID: 32247FBB40AD1FA6



-- 
Nobuhiro Iwamatsu
   iwamatsu at {nigauri.org / debian.org / kernel.org}
   GPG ID: 32247FBB40AD1FA6