[PATCH V2 3/5] clk: renesas: Add R8A774A1 clock tables

[Adam Ford]

On Fri, Jun 19, 2020 at 9:18 AM Marek Vasut <marek.vasut at gmail.com> wrote:
>
> On 6/19/20 3:58 PM, Adam Ford wrote:
> > This sync's the clock tables with the official release from
> > Renesas' repo based on U-Boot 2018.09 and modified to build into
> > the latest version of U-Boot.
>
> Can you import the clock table from Linux too ?

Sure thing. Doing so actually removed a note for missing clocks.  :-)

>
> [...]
>
> > +static const struct mstp_stop_table r8a774a1_mstp_table[] = {
> > +     { 0x00200000, 0x0, 0x00200000, 0 },
> > +     { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 },
> > +     { 0x340E2FDC, 0x2040, 0x340E2FDC, 0 },
> > +     { 0xFFFFFFDF, 0x400, 0xFFFFFFDF, 0 },
> > +     { 0x80000184, 0x180, 0x80000184, 0 },
> > +     { 0xC3FFFFFF, 0x0, 0xC3FFFFFF, 0 },
> > +     { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 },
> > +     { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 },
> > +     { 0x01F1FFF7, 0x0, 0x01F1FFF7, 0 },
> > +     { 0xFFFFFFFE, 0x0, 0xFFFFFFFE, 0 },
> > +     { 0xFFFEFFE0, 0x0, 0xFFFEFFE0, 0 },
> > +     { 0x000000B7, 0x0, 0x000000B7, 0 },
> > +};
>
> Can you check whether all those bits are really defined in the MSTP
> registers of the SoC ?

Can you give me a point on how to interpret this table?  I copied it
from the Renesas release, and it looks the same as the table for the
R8A7796, but I don't know what it's supposed to do.

I found the RZG2M ref manual 1.00, and lists MSTPSR1-10 and
RMSTPCR1-10.  Their initial values vary between revisions of the
silicon for the RZ/G2M, but there are 12 entries in the table, so I am
not even sure I'm looking at the right stuff in the ref manual.


thanks,

adam