Re: [PATCH 1/3] arm64: dts: renesas: r9a08g046: Add USB2.0 placeholder nodes

[Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>]

Hi Geert,
Thanks for your review.

On Mon, Aug 24, 2026 at 04:36:10PM +0200, Geert Uytterhoeven wrote:
> Hi Tommaso,
> 
> On Tue, 18 Aug 2026 at 16:29, Tommaso Merciai
> <tommaso.merciai.xr@bp.renesas.com> wrote:
> > The USB2.0 wiring on the RZ SMARC Carrier-II board is the same for the
> > RZ/G3E and RZ/G3L SoMs, so the nodes belong in the shared
> > renesas-smarc2.dtsi. Enabling them there breaks the RZ/G3L SMARC EVK
> > build, as the r9a08g046 (RZ/G3L) SoC DTSI describes neither the USB2.0
> > host (OHCI/EHCI) nor function (HSUSB) instances:
> >
> > Error: arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi:94.1-7 Label or path ehci0 not found
> > Error: arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi:99.1-7 Label or path ehci1 not found
> > Error: arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi:104.1-8 Label or path hsusb0 not found
> > Error: arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi:114.1-7 Label or path ohci0 not found
> > Error: arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi:119.1-7 Label or path ohci1 not found
> >
> > Add minimal placeholder nodes carrying only the reg property.
> > The remaining properties will be filled in once USB2.0 support for
> > RZ/G3L is complete.
> >
> > Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
> > ---
> >  arch/arm64/boot/dts/renesas/r9a08g046.dtsi | 25 ++++++++++++++++++++++
> 
> FTR, this conflicts with Biju's "[PATCH v7 6/9] arm64: dts: renesas:
> r9a08g046: Add USB2.0 host/phy device nodes". which does add the real
> device nodes.
> 
> [1] https://lore.kernel.org/20260812141940.246223-7-biju.das.jz@bp.renesas.com

I will send v2 picking [2] and [3] from [1], then I will rework [4] to
properly disable common nodes from arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts.

In this way we can drop this patch.

[2] https://lore.kernel.org/all/20260812141940.246223-7-biju.das.jz@bp.renesas.com/
[3] https://lore.kernel.org/all/20260812141940.246223-8-biju.das.jz@bp.renesas.com/
[4] https://patchwork.kernel.org/project/linux-renesas-soc/patch/c2a9a45078773cd022cfec77578ed68c57921c73.1787062965.git.tommaso.merciai.xr@bp.renesas.com/


Kind regards,
Tommaso

> 
> 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