Re: [PATCH v9 08/11] arm64: dts: renesas: add support for solidrun hb-ripple with rzg2l som

[Geert Uytterhoeven <geert@linux-m68k.org>]

Hi Josua,

On Mon, 28 Sept 2026 at 18:21, Josua Mayer <josua@solid-run.com> wrote:
> Am 28.09.26 um 18:10 schrieb Geert Uytterhoeven:
> > On Mon, 28 Sept 2026 at 16:40, Josua Mayer <josua@solid-run.com> wrote:
> >> Add support for the SolidRun HummingBoard Ripple [2] with RZ/G2L
> >> SoM [1].
> >>
> >> The HummingBoard Ripple is a reduced version of HummingBoard Pulse,
> >> featuring:
> >> - 2x USB-2.0 Type-A connector
> >> - 1x 1Gbps RJ45 Ethernet
> >> - micro-HDMI connector
> >> - microSD connector
> >> - mini-PCI-E connector with SIM slot supporting USB-2.0 interface
> >> - MIPI-CSI Camera Connector (not described without specific camera)
> >> - RTC with backup battery
> >>
> >> The carrier board is identical between RZ/G2L, RZ/G2LC, RZ/G2UL and
> >> RZ/V2L SoMs, yet only the RZ/G2LC combination has a product page [2].
> >>
> >> While the variant being supported here is named "Ripple", shared include
> >> files are still named according to the full board for consistency with
> >> schematics, silk screen labels and other SoMs on same board.
> >>
> >> Description for microSD is shared with HummingBoard IIoT.
> >>
> >> [1] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2l-som/
> >> [2] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2lc-base/
> >>
> >> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> >> Signed-off-by: Josua Mayer <josua@solid-run.com>
> > Thanks for the update!
> >
> >> --- /dev/null
> >> +++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
> >> @@ -0,0 +1,17 @@
> >> +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >> +/*
> >> + * Copyright 2025 Josua Mayer <josua@solid-run.com>
> >> + */
> >> +
> >> +/dts-v1/;
> >> +
> >> +#include "r9a07g044l2.dtsi"
> >> +#include "rzg2l-sr-som.dtsi"
> >> +#include "rzg2l-hummingboard-ripple.dtsi"
> >> +#include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
> > This new include is not needed, as rzg2l-hummingboard-ripple.dtsi
> > already includes it:
> >
> >
> >> --- /dev/null
> >> +++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
> >> @@ -0,0 +1,125 @@
> >> +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >> +/*
> >> + * Copyright 2025 Josua Mayer <josua@solid-run.com>
> >> + */
> >> +
> >> +#include "rzg2l-hummingboard-pulse-common.dtsi"
> >> +#include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
> > Same for patch [09/11].
> >
> > Patch [10/11] is fine, as that one does not share
> > rzg2l-hummingboard-ripple.dtsi.
> >
> > As the rest LGTM, I can fix that while applying, so no need to send
> > a v10.
>
> Thanks!
>
> Since Sashiko also found a small issue in patch 11/11 ... v10 can still
> be considered.

OK.

> To the includes, I would actually suggest a different solution for the
> duplicate include,
> considering that I got confused about it:
>
> diff --git
> a/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
> b/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
> index 493a2b9b51d25..95a36f8804b55 100644
> --- a/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
> +++ b/arch/arm64/boot/dts/renesas/r9a07g044l2-hummingboard-ripple.dts
> @@ -7,8 +7,9 @@
>
>   #include "r9a07g044l2.dtsi"
>   #include "rzg2l-sr-som.dtsi"
> -#include "rzg2l-hummingboard-ripple.dtsi"
> +#include "rzg2l-hummingboard-pulse-common.dtsi"
>   #include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
> +#include "rzg2l-hummingboard-ripple.dtsi"
>
>   / {
>       compatible = "solidrun,rzg2l-hummingboard-ripple",
> "solidrun,rzg2l-sr-som",
> diff --git
> a/arch/arm64/boot/dts/renesas/r9a07g054l2-hummingboard-ripple.dts
> b/arch/arm64/boot/dts/renesas/r9a07g054l2-hummingboard-ripple.dts
> index 3df7c67d75a25..0c73871524541 100644
> --- a/arch/arm64/boot/dts/renesas/r9a07g054l2-hummingboard-ripple.dts
> +++ b/arch/arm64/boot/dts/renesas/r9a07g054l2-hummingboard-ripple.dts
> @@ -7,8 +7,9 @@
>
>   #include "r9a07g054l2.dtsi"
>   #include "rzg2l-sr-som.dtsi"
> -#include "rzg2l-hummingboard-ripple.dtsi"
> +#include "rzg2l-hummingboard-pulse-common.dtsi"
>   #include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
> +#include "rzg2l-hummingboard-ripple.dtsi"
>
>   / {
>       compatible = "solidrun,rzv2l-hummingboard-ripple",
> "solidrun,rzv2l-sr-som",
> diff --git a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
> b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
> index d5bd9b7de4282..aeb92630f4c6b 100644
> --- a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
> +++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-ripple.dtsi
> @@ -3,9 +3,6 @@
>    * Copyright 2025 Josua Mayer <josua@solid-run.com>
>    */
>
> -#include "rzg2l-hummingboard-pulse-common.dtsi"
> -#include "rzg2l-hummingboard-pulse-micro-hdmi.dtsi"
> -
>   / {
>       aliases {
>           /* this board does not use second phy / ethernet on SoM */

That sounds good to me, too.

BTW, there seem to be more commonalities that can be factored out of
rzg2l-hummingboard-ripple.dtsi and r9a07g044c2-hummingboard-ripple.dts.
Of course that can be done later, too.

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