Re: [PATCH v8 01/11] dt-bindings: soc: renesas: Add various SolidRun RZ/G2 based boards

[Josua Mayer]

Hi Geert,

On 9/23/2026 3:42 PM, Geert Uytterhoeven wrote:
> Hi Joshua,
>
> On Fri, 4 Sept 2026 at 13:56, Josua Mayer <josua@xxxxxxxxxxxxx> wrote:
>> Add bindings for various SolidRun boards and System on Module built
>> around Renesas RZ/G2 family of SoCs:
>>
>> - RZ/G2L SoM [1]
>> - RZ/V2L SoM [2]
>>    (shares PCB with G2L and has very similar programming model)
>> - RZ/G2LC SoM [3]
>> - RZ/G2UL SoM [4]
>>    (shares PCB with G2LC but programming model differs largely)
>> - HummingBoard IIoT [5] (RZ/G2L, RZ/V2L, RZ/G2LC)
>> - HummingBoard Pro [6] (RZ/G2L, RZ/V2L)
>> - HummingBoard Base (Ripple) [7] (RZ/G2L, RZ/V2L, RZ/G2LC, RZ/G2UL)
>>
>> [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/rz-v2l-som/
>> [3] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2lc-som/
>> [4] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/rz-g2ul-som/
>> [5] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2l-iot-sbc/
>> [6] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2l-sbc/
>> [7] https://www.solid-run.com/embedded-industrial-iot/renesas-rz-family/hummingboard-rz-series-sbcs/hummingboard-rz-g2lc-base/
>>
>> Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
>> Signed-off-by: Josua Mayer <josua@xxxxxxxxxxxxx>
> Thanks for your patch!
>
>> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
>> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
>> @@ -508,6 +508,14 @@ properties:
>>                 - renesas,r9a07g043u12 # RZ/G2UL Type-2
>>             - const: renesas,r9a07g043
>>
>> +      - description: SolidRun RZ/G2UL based boards
>> +        items:
>> +          - enum:
>> +              - solidrun,rzg2ul-hummingboard-ripple # SolidRun RZ/G2UL HummingBoard Ripple
> As RZ/G2UL is pin-compatible with RZ/G2LC,
The SoM is, the SoC is more complex.
SolidRun uses the G2L/G2LC package 15x15mm while G2UL is 13x13.

You are correct to expect HB-IIoT, however due to the reduced pin count
and feature set it is not useful and will likely never get supported by SR.

> I guess you could have an
> RZ/G2UL-based HummingBoard IIoT, too?
>
>> +          - const: solidrun,rzg2ul-sr-som
> Is there any special meaning of the "sr" in the middle of this and all
> other SoM compatible values?
> If it just means "SolidRun",
It does.
> I think it can be dropped.
The "sr" is merely to avoid name collision with other SoM vendors.
> However,
> you already have that for various SoMs with non-Renesas SoCs.
Correct.
>
>> +          - const: renesas,r9a07g043u12 # RZ/G2UL Type-2
>> +          - const: renesas,r9a07g043
> The rest LGTM, so
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Thanks!