Re: [PATCH][2.4] remove amd7(saucy)_tco

From: Zwane Mwaikambo
Date: Sun May 02 2004 - 10:56:12 EST


On Sun, 2 May 2004, Willy Tarreau wrote:

> On Sat, May 01, 2004 at 03:37:36PM -0400, Zwane Mwaikambo wrote:
> > Hello Marcelo,
> > This driver has already been removed in 2.6, essentially we've had
> > problems getting it working (it's been a while now) with a lot of boards,
> > all seems to be alright until the actual point where the hardware is
> > supposed to reset the system. So lets just back it out.
>
> Indeed, I've just checked here, because I believed I had seen it working,
> but now I think it was the softdog. It does nothing at all. I've downloaded
> and read AMD's datasheet and the driver seems to do the right thing. BTW,
> I wonder if the chip is buggy or not, because I tried to play with the
> SYSRST and FULLRST bits in the 0xCF9 register. Changing SYSRST to 1 does not
> change anything, and changing FULLRST to 1 immediately reboots the machine
> even if no reset was pending !

That agrees with what Martin Josefsson and i came across, we ended up
combing through the datasheet and ended up coming to the conclusion that
either we were missing something subtle or the hardware just didn't work.
It's a shame because i had a friend who had a whole bunch of these and
wanted to use the watchdog in production.

Zwane
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