linux-kernel - Re: [PATCH 5.15 110/317] arm64: dts: renesas: r8a779a0: Update to R-Car Gen4 compatible values

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Date: Wed, 27 Mar 2024 10:41:22 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Sasha Levin <sashal@...nel.org>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org, 
	Wolfram Sang <wsa+renesas@...g-engineering.com>, 
	Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH 5.15 110/317] arm64: dts: renesas: r8a779a0: Update to
 R-Car Gen4 compatible values

Hi Sasha,

On Tue, Mar 26, 2024 at 8:18 PM Sasha Levin <sashal@...nel.org> wrote:
> On Mon, Mar 25, 2024 at 09:43:31AM +0100, Geert Uytterhoeven wrote:
> >On Mon, Mar 25, 2024 at 12:36 AM Sasha Levin <sashal@...nel.org> wrote:
> >> From: Geert Uytterhoeven <geert+renesas@...der.be>
> >>
> >> [ Upstream commit a1721bbbdb5c6687d157f8b8714bba837f6028ac ]
> >>
> >> Despite the name, R-Car V3U is the first member of the R-Car Gen4
> >> family.  Hence update the compatible properties in various device nodes
> >> to include family-specific compatible values for R-Car Gen4 instead of
> >> R-Car Gen3:
> >>   - DMAC,
> >>   - (H)SCIF,
> >>   - I2C,
> >>   - IPMMU,
> >>   - WDT.
> >>
> >> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> >> Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> >> Link: https://lore.kernel.org/r/73cea9d5e1a6639422c67e4df4285042e31c9fd5.1651497071.git.geert+renesas@glider.be
> >> Stable-dep-of: 0c51912331f8 ("arm64: dts: renesas: r8a779a0: Correct avb[01] reg sizes")
> >> Signed-off-by: Sasha Levin <sashal@...nel.org>
> >> ---
> >>  arch/arm64/boot/dts/renesas/r8a779a0.dtsi | 24 +++++++++++------------
> >>  1 file changed, 12 insertions(+), 12 deletions(-)
> >>
> >> diff --git a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> >> index 26899fb768a73..c7d1b79692c11 100644
> >> --- a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> >> +++ b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
> >> @@ -583,7 +583,7 @@ hscif3: serial@...a0000 {
> >>
> >>                 avb0: ethernet@...00000 {
> >>                         compatible = "renesas,etheravb-r8a779a0",
> >> -                                    "renesas,etheravb-rcar-gen3";
> >> +                                    "renesas,etheravb-rcar-gen4";
> >
> >This change will break Ethernet, as the Renesas EtherAVB driver in
> >v5.15.x does not handle "renesas,etheravb-rcar-gen4" yet.
> >
> >That can be fixed by also backporting commit 949f252a8594a860
> >("net: ravb: Add R-Car Gen4 support") in v6.1.
>
> I'll just drop this patch instead, thanks!

Looks like it still made v5.15.153?
The easiest fix is to backport 949f252a8594a860, too.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

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