Subject: Re: [PATCH v2 2/3] dt-bindings: arm: sunxi: Add Baijie HelperBoard A133 compatible

From: Alexander Sverdlin <[email-masked]>
Date: Mon, 11 May 2026 18:18:22 +0200

Hi Conor,

On Mon, 2026-05-11 at 17:08 +0100, Conor Dooley wrote:
> > Baijie HelperBoard A133 is a development board around their A133 Core
> > board. Introduce a compatible for both the Core and the development
> > boards.
> > 
> > Signed-off-by: Alexander Sverdlin <[email-masked]>
> > ---
> > 
> > Changelog:
> > v2:
> > - introduced baijie,helper-a133-core compatible for the Core (SoM) board
> > 
> >   Documentation/devicetree/bindings/arm/sunxi.yaml | 11 +++++++++++
> >   1 file changed, 11 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/sunxi.yaml b/Documentation/devicetree/bindings/arm/sunxi.yaml
> > index e6443c266fa1..d7b9dec81165 100644
> > --- a/Documentation/devicetree/bindings/arm/sunxi.yaml
> > +++ b/Documentation/devicetree/bindings/arm/sunxi.yaml
> > @@ -96,6 +96,17 @@ properties:
> >             - const: allwinner,ba10-tvbox
> >             - const: allwinner,sun4i-a10
> >   
> > +      - description: Baijie Helper A133
> > +        items:
> > +          - const: baijie,helper-a133
> > +          - const: baijie,helper-a133-core
> > +          - const: allwinner,sun50i-a100
> > +
> > +      - description: HelperBoardA133 Core
> > +        items:
> > +          - const: baijie,helper-a133-core
> > +          - const: allwinner,sun50i-a100
> 
> Does this make sense? Can the core board be used without a carrier?

such operation would be impractical at least, that's why in my v1
Core board didn't have its own compatible. Maybe I didn't understand
you correctly.

Shall I drop the above 4 lines, the compatible property from the
root in sun50i-a133-baije-core.dtsi and only leave
sun50i-a133-baijie-helper.dtb with 3-strings compatible as it is
now in v2?

-- 
Alexander Sverdlin.