linux-kernel - Re: [PATCH v2 10/13] dt-bindings: spi: cadence-qspi: Add support for Pensando Elba SoC

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Message-ID: <CAK9rFnx4jBAEMYVcVW+D5bRRzJA22wzYzyaCT9Q+y2Xw638bfQ@mail.gmail.com>
Date:   Sun, 22 Aug 2021 18:57:29 -0700
From:   Brad Larson <brad@...sando.io>
To:     Pratyush Yadav <p.yadav@...com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Mark Brown <broonie@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Olof Johansson <olof@...om.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-spi <linux-spi@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 10/13] dt-bindings: spi: cadence-qspi: Add support for
 Pensando Elba SoC

Hi Pratyush,

On Tue, Mar 30, 2021 at 4:12 AM Pratyush Yadav <p.yadav@...com> wrote:
>
> Hi Brad,
>
> On 28/03/21 06:59PM, Brad Larson wrote:
> > Add new vendor Pensando Systems Elba SoC compatible
> > string and convert to json-schema.
> >
> > Signed-off-by: Brad Larson <brad@...sando.io>
> > ---
> >  .../bindings/spi/cadence-quadspi.txt          |  68 --------
> >  .../bindings/spi/cadence-quadspi.yaml         | 153 ++++++++++++++++++
(...)
> > +properties:
> > +  compatible:
> > +    contains:
> > +      enum:
> > +        - cdns,qspi-nor       # Generic default
> > +        - ti,k2g-qspi         # TI 66AK2G SoC
> > +        - ti,am654-ospi       # TI AM654 SoC
> > +        - intel,lgm-qspi      # Intel LGM SoC
> > +        - pensando,cdns-qspi  # Pensando Elba SoC
>
> Wouldn't this allow any combination of all 5 strings? So for example
> this would allow "ti,am654-ospi", "pensando,cdns-qspi" which is
> obviously not correct.
>
> I sent a patch recently [0] that does this correctly and it has gotten
> Rob's blessing. So I suggest you build your patch on top of that.

Thanks for the pointer to the patch that creates yaml binding
spi/cdns,qspi-nor.yaml.  All I will need to do now for the updated
patchset is this

--- a/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
+++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor.yaml
@@ -20,6 +20,7 @@ properties:
               - ti,k2g-qspi
               - ti,am654-ospi
               - intel,lgm-qspi
+              - pensando,elba-qspi
           - const: cdns,qspi-nor
       - const: cdns,qspi-nor

Regards,
Brad