Hi Sergei,
On Fri, Sep 15, 2017 at 8:53 PM, Sergei Shtylyov
<sergei.shtylyov@xxxxxxxxxxxxxxxxxx> wrote:
> On 09/15/2017 09:44 PM, Geert Uytterhoeven wrote:
>>>> Forgot to specify SCIF_CLK -- it's populated.
>>>
>>> Unfortunately, the kernel hangs after ttySC0 is registered if I
>>> specify
>>> this frequency...
>>
>> Is the crystal populated?
>
> It should be, with 14.7456MHz chrystal. But it's connected to SCIF_CLK_B
> pin -- perhaps that's the problem...
>
>> When doing initial bringup of the remote Eagle I have access to, the SCIF
>> registers didn't indicate SCIF_CLK was being used from U-Boot, while it
>> is used on R-Car Gen2 boards that have it populated.
>
> Perhaps PFC is just not configured properly?
Plausible.
As there's no PFC driver yet (at least I haven't seen one ;-), you can try
configuring the PFC to use SCIF_CLK_B by writing to the registers
from the U-Boot prompt...
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
