Re: [PATCH 05/11] media: renesas: fdp1: remove R-Car H3 ES1.* handling

[Geert Uytterhoeven]

Hi Wolfram,

On Mon, Apr 24, 2023 at 9:17 PM Wolfram Sang
<wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > -#define FD1_IP_H3_ES1                  0x02010101
>
> ...
>
> > Apparently 0x02010101 is also used on (at least) R-Car M2-W ES1.0,
> > causing the following annoying (but further harmless?) messages
> > during boot:
> >
> >     rcar_fdp1 fe940000.fdp1: FDP1 Unidentifiable (0x02010101)
> >     rcar_fdp1 fe944000.fdp1: FDP1 Unidentifiable (0x02010101)
>
> Hmm, that means before my removal patch, Gen2 has been incorrectly
> defined as H3 ES1?

Indeed, but the driver doesn't seem to do anything with the detected
version, except for printing a debug or error message.

> > Note that the R-Car Gen2 documentation states the register's contents
> > are all zeroes.  But that value would trigger the error message, too.
>
> Bad, but well...
>
> > Sorry for not noticing before. Apparently I never booted a kernel
> > with this patch on koelsch...
>
> We could re-add this version and just let it print "FDP1 Initial
> Version" or something? I could test this on my Lager board.

I plan to test it on a few other boards, too...
Just wanted to let you know ASAP...

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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