linux-kernel - Re: [PATCH v2] dt-binding: ipmi: add fallback to npcm845 compatible

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Date:   Sun, 7 Aug 2022 11:03:56 +0300
From:   Tomer Maimon <tmaimon77@...il.com>
To:     minyard@....org
Cc:     Avi Fishman <avifishman70@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Joel Stanley <joel@....id.au>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        openipmi-developer@...ts.sourceforge.net,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2] dt-binding: ipmi: add fallback to npcm845 compatible

Hi Corey,

Thanks for your comment.

On Fri, 5 Aug 2022 at 14:58, Corey Minyard <minyard@....org> wrote:
>
> On Thu, Aug 04, 2022 at 09:18:00PM +0300, Tomer Maimon wrote:
> > Add to npcm845 KCS compatible string a fallback to npcm750 KCS compatible
> > string becuase NPCM845 and NPCM750 BMCs are using identical KCS modules.
> >
> > Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
> > ---
> >  Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt b/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt
> > index cbc10a68ddef..4fda76e63396 100644
> > --- a/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt
> > +++ b/Documentation/devicetree/bindings/ipmi/npcm7xx-kcs-bmc.txt
> > @@ -7,7 +7,7 @@ used to perform in-band IPMI communication with their host.
> >  Required properties:
> >  - compatible : should be one of
> >      "nuvoton,npcm750-kcs-bmc"
> > -    "nuvoton,npcm845-kcs-bmc"
> > +    "nuvoton,npcm845-kcs-bmc", "nuvoton,npcm750-kcs-bmc"
>
> This is just wrong.  The compatible is supposed to identify the device,
> not the board the device is on.  I think compatible here should be
> "npcm7xx-kcs-bmc", and just use that everywhere.  It's fine if that is
> used on a board named npcm845.
The NPCM8XX is not a board, The Nuvoton NPCM8XX is a fourth-generation
BMC SoC device family.
>
> -corey
>
> >  - interrupts : interrupt generated by the controller
> >  - kcs_chan : The KCS channel number in the controller
> >
> > --
> > 2.33.0
> >

Best regards,

Tomer