Re: [PATCH 2/2] dt-bindings: samsung, mipi-dsim: Add imx7d specific compatible

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Hi Fabio,

Am Dienstag, 7. Januar 2025, 11:35:48 CET schrieb Fabio Estevam:
> Hi Alexander,
> 
> On Tue, Jan 7, 2025 at 6:50 AM Alexander Stein
> <alexander.stein@xxxxxxxxxxxxxxx> wrote:
> >
> > This add a imx7(d) specific compatible which is compatible to imx8mm.
> > This silences the dtbs_check warning:
> > arch/arm/boot/dts/nxp/imx/imx7s-mba7.dtb: dsi@30760000: compatible: 'oneOf' conditional failed, one must be fixed:
> >  ['fsl,imx7d-mipi-dsim', 'fsl,imx8mm-mipi-dsim'] is too long
> 
> The warning here is about using fsl,imx8mm-mipi-dsim.

I'm not sure what you exactly mean. The warning isn't about using fsl,imx8mm-mipi-dsim, instead
fsl,imx7d-mipi-dsim does not match any compatibles listed in the schema.

> > Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
> > ---
> >  .../devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> > index 4ed7a799ba26b..e43fec5609417 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/samsung,mipi-dsim.yaml
> > @@ -27,7 +27,9 @@ properties:
> >            - fsl,imx8mm-mipi-dsim
> >            - fsl,imx8mp-mipi-dsim
> >        - items:
> > -          - const: fsl,imx8mn-mipi-dsim
> > +          - enum:
> > +              - fsl,imx7d-mipi-dsim
> > +              - fsl,imx8mn-mipi-dsim
> 
> But you added a fallback to fsl,imx8mn-mipi-dsim, so this does not look right.

Admittedly I'm having a hard time on DT schemas at times, but this change allows
imx7d OR imx8mn to be used together with imx8mm.

> I have already sent the following fix to address this issue:
> 
> https://lore.kernel.org/all/20241217131431.1464983-1-festevam@xxxxxxxxx/T/

This patch essentially does the same but add a new entry to the oneOf.
If you add fsl,imx8mn-mipi-dsim to that enum as we end up with the same
solution.

Best regards,
Alexander
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