linux-kernel - Re: [PATCH v3 2/4] dt-bindings: net: silabs, wfx: add prt, prtt1c-wfm200 antenna variant

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Message-ID: <13694640.RDIVbhacDa@pc-42>
Date:   Tue, 26 Apr 2022 10:56:47 +0200
From:   Jérôme Pouiller <jerome.pouiller@...abs.com>
To:     Oleksij Rempel <o.rempel@...gutronix.de>
Cc:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        kernel@...gutronix.de, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 2/4] dt-bindings: net: silabs, wfx: add prt, prtt1c-wfm200 antenna variant

On Tuesday 26 April 2022 10:33:05 CEST Oleksij Rempel wrote:
> On Tue, Apr 26, 2022 at 10:19:29AM +0200, Jérôme Pouiller wrote:
> > On Tuesday 26 April 2022 09:21:13 CEST Oleksij Rempel wrote:
> > > On Mon, Apr 25, 2022 at 05:38:20PM +0200, Jérôme Pouiller wrote:
> > > > On Monday 25 April 2022 15:28:42 CEST Oleksij Rempel wrote:
> > > > > Add compatible for wfm200 antenna configuration variant for Protonic PRTT1C
> > > > > board.
> > > > >
> > > > > Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> > > > > ---
> > > > >  .../devicetree/bindings/staging/net/wireless/silabs,wfx.yaml     | 1 +
> > > > >  1 file changed, 1 insertion(+)
> > > > >
> > > > > diff --git a/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml b/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml
> > > > > index 105725a127ab..ce107fe45d7c 100644
> > > > > --- a/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml
> > > > > +++ b/Documentation/devicetree/bindings/staging/net/wireless/silabs,wfx.yaml
> > > > > @@ -39,6 +39,7 @@ properties:
> > > > >    compatible:
> > > > >      items:
> > > > >        - enum:
> > > > > +          - prt,prtt1c-wfm200 # Protonic PRTT1C Board
> > > > >            - silabs,brd4001a # WGM160P Evaluation Board
> > > > >            - silabs,brd8022a # WF200 Evaluation Board
> > > > >            - silabs,brd8023a # WFM200 Evaluation Board
> > > >
> > > > I think you also have to declare this new entry in wfx_sdio_of_match,
> > > > and/or wfx_spi_of_match and wfx_spi_id.
> > > >
> > > > On the WFM200 variant, the antenna is built in the chip. So I think you
> > > > can point on the same configuration than the brd8023a.
> > >
> > > I assume driver update can be made in a separate patch. As soon as we
> > > reserved compatible for this boards there should be no conflicts. This patches
> > > series is targeting only devicetree and needed DT schema changes.
> >
> > hmmm... I am not DT specialist, but it seems a bit weird to have a new
> > entry in the dt schema, but no new code in any of_match table.
> 
> Here is one example:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/spi/fsl-imx-cspi.yaml?h=v5.18-rc4
> properties:
>   compatible:
>     oneOf:
>       - const: fsl,imx1-cspi
>       - const: fsl,imx21-cspi
>       - const: fsl,imx27-cspi
>       - const: fsl,imx31-cspi
>       - const: fsl,imx35-cspi
>       - const: fsl,imx51-ecspi
>       - const: fsl,imx53-ecspi
>       - items:
>           - enum:
>               - fsl,imx50-ecspi
>               - fsl,imx6q-ecspi
>               - fsl,imx6sx-ecspi
>               - fsl,imx6sl-ecspi
>               - fsl,imx6sll-ecspi
>               - fsl,imx6ul-ecspi
>               - fsl,imx7d-ecspi
>               - fsl,imx8mq-ecspi
>               - fsl,imx8mm-ecspi
>               - fsl,imx8mn-ecspi
>               - fsl,imx8mp-ecspi
>           - const: fsl,imx51-ecspi
> 
> httpt://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/spi/spi-imx.c?h=v5.18-rc4#n1063
> static const struct of_device_id spi_imx_dt_ids[] = {
>         { .compatible = "fsl,imx1-cspi", .data = &imx1_cspi_devtype_data, },
>         { .compatible = "fsl,imx21-cspi", .data = &imx21_cspi_devtype_data, },
>         { .compatible = "fsl,imx27-cspi", .data = &imx27_cspi_devtype_data, },
>         { .compatible = "fsl,imx31-cspi", .data = &imx31_cspi_devtype_data, },
>         { .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, },
>         { .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, },
>         { .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, },
>         { .compatible = "fsl,imx6ul-ecspi", .data = &imx6ul_ecspi_devtype_data, },
>         { /* sentinel */ }
> };

Right.


-- 
Jérôme Pouiller