linux-kernel - Re: [PATCH 2/2] riscv: dts: microchip: Add ethernet0 to the aliases node

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Message-ID: <CAEUhbmXrSJ2dkXYvoZXTZ+3gV3h9OBx3u0hOitwLvMDKa2A4DA@mail.gmail.com>
Date:   Fri, 16 Jul 2021 18:14:13 +0800
From:   Bin Meng <bmeng.cn@...il.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        Lewis Hanly <lewis.hanly@...rochip.com>,
        Atish Patra <atish.patra@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Bin Meng <bin.meng@...driver.com>
Subject: Re: [PATCH 2/2] riscv: dts: microchip: Add ethernet0 to the aliases node

Hi Geert,

On Fri, Jul 16, 2021 at 5:23 PM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
>
> Hi Bing,
>
> On Fri, Jul 2, 2021 at 3:44 AM Bin Meng <bmeng.cn@...il.com> wrote:
> > From: Bin Meng <bin.meng@...driver.com>
> >
> > U-Boot expects this alias to be in place in order to fix up the mac
> > address of the ethernet node.
> >
> > Note on the Icicle Kit board, currently only emac1 is enabled so it
> > becomes the 'ethernet0'.
> >
> > Signed-off-by: Bin Meng <bin.meng@...driver.com>
>
> Thanks for your patch!

Thanks for the review!

>
> > --- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
> > @@ -9,6 +9,10 @@ / {
> >         model = "Microchip MPFS Icicle Kit";
> >         compatible = "microchip,mpfs-icicle-kit";
> >
> > +       aliases {
> > +               ethernet0 = &emac1;
> > +       };
> > +
> >         chosen {
> >         };
>
> This should be added to the board DTS (microchip-mpfs-icicle-kit.dts)
> instead.

I was wondering the same thing before doing this, but when I checked
all other DTS in arch/riscv/boot I found the aliases node is put in
the SoC dtsi file instead of the board on so I think that's the
convention.

Regards,
Bin