From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Chris Studholme <cvs@cs.utoronto.ca>
Cc: Terry Greeniaus <tgree@phys.ualberta.ca>,
linuxppc-dev@lists.linuxppc.org
Subject: Re: how to setup PLL1 on 750FX
Date: 27 Jun 2003 13:37:30 +0200 [thread overview]
Message-ID: <1056713849.32123.38.camel@gaston> (raw)
In-Reply-To: <Pine.LNX.4.44.0306261631001.9491-100000@stoa.dhs.org>
> I don't understand how it is that my machine didn't lockup when PLL1 was
> in the off state.
Well... I may have a bug making my low-speed-during-idle code not work
... Or maybe the PLL1 beeing off means the CPU will just continue
locking on PLL0...
> Anyway, I decided to set PLL1 in identify_cpu in misc.S. Actually, I put
> the code to detect the 750fx and set PLL1 in a seperate method. Here's
> what I have:
That looks fine overall but I didn't look at the assembly in details yet,
I'll try to take some time to review your code in more detail & eventually
commit to the linuxppc trees.
Another place where you want the real PVR is the CPU save/restore state
code in cpu_setup_6xx.S. That code is used for example to save the CPU
state before sleep and restore it on wakeup.
Ben.
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2003-06-27 11:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200306200459.XAA31217@lists.linuxppc.org>
2003-06-20 5:53 ` pismo upgraded to 750fx not detected correctly Terry Greeniaus
2003-06-21 15:58 ` Chris Studholme
2003-06-22 9:49 ` Benjamin Herrenschmidt
2003-06-22 21:58 ` Terry Greeniaus
2003-06-23 6:01 ` Benjamin Herrenschmidt
2003-06-23 4:47 ` Chris Studholme
2003-06-23 8:27 ` Gabriel Paubert
2003-06-23 17:16 ` Chris Studholme
2003-06-24 8:18 ` Gabriel Paubert
2003-06-23 17:46 ` Benjamin Herrenschmidt
2003-06-26 17:02 ` how to setup PLL1 on 750FX Chris Studholme
2003-06-26 17:33 ` Terry Greeniaus
2003-06-26 20:47 ` Chris Studholme
2003-06-27 11:37 ` Benjamin Herrenschmidt [this message]
2003-06-28 3:05 ` Chris Studholme
2003-06-28 8:23 ` Benjamin Herrenschmidt
2003-06-30 18:57 ` Chris Studholme
2003-07-01 9:52 ` Benjamin Herrenschmidt
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