From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Biju Das <biju.das.jz@bp.renesas.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Magnus Damm <magnus.damm@gmail.com>,
Chris Paterson <Chris.Paterson2@renesas.com>,
Biju Das <biju.das@bp.renesas.com>,
Simon Horman <horms+renesas@verge.net.au>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: Re: [PATCH 1/2] arm64: dts: renesas: hihope-rzg2-ex: Drop rxc-skew-ps from ethernet-phy node
Date: Fri, 16 Oct 2020 08:30:57 +0200 [thread overview]
Message-ID: <CAMuHMdV5baxxGxWc5Y5O5dKXAXZcNhUdJdWfgwKrzcUGj8p=LQ@mail.gmail.com> (raw)
In-Reply-To: <TYBPR01MB53091FA117DF513BAF6A46E486030@TYBPR01MB5309.jpnprd01.prod.outlook.com>
Hi Biju,
On Fri, Oct 16, 2020 at 8:15 AM Biju Das <biju.das.jz@bp.renesas.com> wrote:
> > Subject: Re: [PATCH 1/2] arm64: dts: renesas: hihope-rzg2-ex: Drop rxc-
> > skew-ps from ethernet-phy node
> > On Thu, Oct 15, 2020 at 3:24 PM Biju Das <biju.das.jz@bp.renesas.com>
> > wrote:
> > > HiHope RZG2[HMN] boards uses Realtek phy and the driver does not
> > > support rxc-skew-ps property. So remove rxc-skew-ps from ethernet-phy
> > node.
> > >
> > > Fixes: 7433f1fb8ec8fe ("arm64: dts: renesas: Add HiHope RZ/G2M sub
> > > board support")
> > > Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> > > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-
> > lad.rj@bp.renesas.com>
> >
> > Thanks for your patch!
> >
> > > --- a/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
> > > +++ b/arch/arm64/boot/dts/renesas/hihope-rzg2-ex.dtsi
> > > @@ -23,7 +23,6 @@
> > > status = "okay";
> > >
> > > phy0: ethernet-phy@0 {
> > > - rxc-skew-ps = <1500>;
> > > reg = <0>;
> > > interrupt-parent = <&gpio2>;
> > > interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
> >
> > Should "rx-internal-delay-ps = <1800>" be added to the avb node instead
> > (after [1] has entered v5.10-rc1, and the DTS part of [2] has been applied to
> > renesas-devel)?
>
> Looking at the schematic, it is not needed, since it has "2ns" internal delay (4.7K Ohm latched to 2.5 V) on the Rx side.
Thanks for the pointer, I can confirm LED2_RXDLY is strapped high
(to 3.3V, not 2.5V though).
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v5.11.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
prev parent reply other threads:[~2020-10-16 6:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 13:23 [PATCH 1/2] arm64: dts: renesas: hihope-rzg2-ex: Drop rxc-skew-ps from ethernet-phy node Biju Das
2020-10-15 13:23 ` [PATCH 2/2] arm64: dts: renesas: cat875: Remove " Biju Das
2020-10-15 13:39 ` Geert Uytterhoeven
2020-10-16 6:13 ` Biju Das
2020-10-16 6:31 ` Geert Uytterhoeven
2020-10-15 13:41 ` [PATCH 1/2] arm64: dts: renesas: hihope-rzg2-ex: Drop " Geert Uytterhoeven
2020-10-16 6:15 ` Biju Das
2020-10-16 6:30 ` Geert Uytterhoeven [this message]
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