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

[Chen-Yu Tsai]

On Mon, Jul 12, 2021 at 2:59 PM Chen-Yu Tsai <wenst at chromium.org> wrote:
>
> On Mon, Jul 12, 2021 at 2:06 PM Tzung-Bi Shih <tzungbi at google.com> wrote:
> >
> > On Sat, Jul 10, 2021 at 8:25 PM Tinghan Shen <tinghan.shen at mediatek.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.

Also, a coprocessor without any clock feeding it makes little sense.
Any processor requires a running clock. Whether that clock is controllable
is beside the point.

> 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.
> >
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