Re: [RFC 20/28] media: vsp1: Add support for the RZ/G2L VSPD

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Hi Biju,

On Sun, Jan 23, 2022 at 4:20 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> > On Wed, Jan 12, 2022 at 05:46:04PM +0000, Biju Das wrote:
> > > The RZ/G2L VSPD provides a single VSPD instance. it has the following
> > > sub modules MAU, CTU, RPF, DPR, LUT, BRS, WPF and LIF.
> > >
> > > It does not have version register, so added a new compatible string to
> > > match to get the version value. Also the reset is shared with DU
> > > module.
> >
> > Does it really lack the version register, or is it just not documented ?
> > It hasn't been documented on all R-Car variants, but has consistently been
> > present.
>
> No, it is not present on RZ/G2L. the read value of this register is 0x0.

Just to be sure: you did check that while the module clock is enabled and
the module reset is deasserted?

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



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