Re: [PATCH v2 1/5] dt-bindings: net: can: renesas,rcar-canfd: Document RZ/G2L SoC

["Lad, Prabhakar" <prabhakar.csengg@gmail.com>]

Hi Geert,

On Tue, Jul 20, 2021 at 4:11 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>
> Hi Prabhakar,
>
> On Tue, Jul 20, 2021 at 4:31 PM Lad, Prabhakar
> <prabhakar.csengg@gmail.com> wrote:
> > On Tue, Jul 20, 2021 at 11:22 AM Philipp Zabel <p.zabel@pengutronix.de> wrote:
> > > On Mon, 2021-07-19 at 15:38 +0100, Lad Prabhakar wrote:
> > > > Add CANFD binding documentation for Renesas RZ/G2L SoC.
> > > >
> > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> > > > Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
>
> > > > --- a/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
> > > > +++ b/Documentation/devicetree/bindings/net/can/renesas,rcar-canfd.yaml
>
> > > > +    resets:
> > > > +      items:
> > > > +        - description: CANFD_RSTP_N
> > > > +        - description: CANFD_RSTC_N
> > >
> > > Do you know what the "P" and "C" stands for? It would be nice if the
> > > description could tell us what the reset lines are used for.
> > >
> > unfortunately the HW manual does not mention  anything about "P" and "C" :(
> >
> > > I would prefer if you used these names (or shortened versions, for
> > > example "rstp_n", "rstc_n") as "reset-names" and let the driver
> > > reference the resets by name instead of by index.
> > >
> > OK will do that and maxItems:2 for resets.
> >
> > @Geert, for R-Car Gen3 does "canfd_rst" (as it's a module reset)
> > sounds good for reset-names? Or do you have any other suggestions?
>
> I wouldn't bother with reset-names on R-Car, as there is only a
> single reset.
>
OK will keep "description: CANFD reset" for R-Car as done in the
current patch and just add reset-names only for RZ/G2L SoC.

> BTW, does there exist a generally-accepted reset-equivalent of "fck"
> ("Functional ClocK")?
>
None that I am aware of (Couple of binding docs have "rst"), but maybe
Philipp could have some suggestions.

Cheers,
Prabhakar

> Gr{oetje,eeting}s,
>
>                         Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds