linux-kernel - Re: [v2 1/2] dt-bindings: remoteproc: mediatek: Add binding for mt8195 scp

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Date:   Mon, 12 Jul 2021 14:59:00 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Tzung-Bi Shih <tzungbi@...gle.com>
Cc:     Tinghan Shen <tinghan.shen@...iatek.com>, ohad@...ery.com,
        bjorn.andersson@...aro.org, mathieu.poirier@...aro.org,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>,
        srv_heupstream <srv_heupstream@...iatek.com>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [v2 1/2] dt-bindings: remoteproc: mediatek: Add binding for
 mt8195 scp

On Mon, Jul 12, 2021 at 2:06 PM Tzung-Bi Shih <tzungbi@...gle.com> wrote:
>
> On Sat, Jul 10, 2021 at 8:25 PM Tinghan Shen <tinghan.shen@...iatek.com> wrote:
> > @@ -5,13 +5,15 @@ This binding provides support for ARM Cortex M4 Co-processor found on some
> >  Mediatek SoCs.
> >
> >  Required properties:
> > -- compatible           Should be "mediatek,mt8183-scp"
> > +- compatible           Should be one of:
> > +                               "mediatek,mt8183-scp"
> > +                               "mediatek,mt8195-scp"
> Just realized we forgot to add DT bindings for mediatek,mt8192-scp[1].
> Could you send another patch for adding the missing property?
>
> [1]: https://elixir.bootlin.com/linux/v5.13.1/source/drivers/remoteproc/mtk_scp.c#L879
>
> > -- clocks               Clock for co-processor (See: ../clock/clock-bindings.txt)
> > -- clock-names          Contains the corresponding name for the clock. This
> > +- clocks               Required by mt8183. Clock for co-processor (See: ../clock/clock-bindings.txt)
> > +- clock-names          Required by mt8183. Contains the corresponding name for the clock. This
> >                         should be named "main".
> Let's move clocks and clock-names to "Optional properties".  See [2]
> for your reference.  I guess it doesn't need to mention which chip
> needs the properties.  For those chips that need the clock properties,
> they won't work correctly without correct clock properties.

I would suggest still adding them. We will need to describe the requirements
anyway then the binding is converted to DT schema.

ChenYu

> [2]: https://elixir.bootlin.com/linux/v5.13.1/source/Documentation/devicetree/bindings/remoteproc/ti,keystone-rproc.txt#L87
>
>
> Suggested to provide a cover letter for the series next time.
>
> nit: other patches usually use "[PATCH v2 1/2]" in the email title
> instead of the one used in the mail.
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek

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