From: Scott Wood <scottwood@freescale.com>
To: Laurent Pinchart <laurentp@cse-semaphore.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Trouble with SCC UART ports when moving from ppc to powerpc
Date: Mon, 17 Mar 2008 10:33:26 -0500 [thread overview]
Message-ID: <20080317153326.GA2644@loki.buserror.net> (raw)
In-Reply-To: <200803101317.04455.laurentp@cse-semaphore.com>
On Mon, Mar 10, 2008 at 01:17:01PM +0100, Laurent Pinchart wrote:
> On Friday 07 March 2008 17:21, Scott Wood wrote:
> > cpm2_reset() doesn't currently actually reset the CPM, for some reason
> > (unlike cpm1). This should probably be fixed, though then we'd have to
> > deal with assigning SMC parameter RAM addresses ourselves.
>
> I had overlooked that. Resetting the CPM in cpm2_reset() helps. Is there any
> reason not to rset the CPM in cpm2_reset() ?
The only issue I'm aware of other than the SMC parameter RAM relocation is
that the reset can't happen if the early udbg printk is being used.
> How should SMC parameter RAM assignment be handled ? I'm not very familiar
> with the CPM1,
CPM1 has hardcoded SMC parameter RAM addresses, so it's not relevant here.
> but for CPM2 the cpm_uart driver could easily cpm_dpalloc() parameter RAM.
It can, yes. Patches welcome. :-)
-Scott
next prev parent reply other threads:[~2008-03-17 15:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-07 14:20 Trouble with SCC UART ports when moving from ppc to powerpc Laurent Pinchart
2008-03-07 15:00 ` Timur Tabi
2008-03-07 16:21 ` Scott Wood
2008-03-10 12:17 ` Laurent Pinchart
2008-03-17 15:33 ` Scott Wood [this message]
2008-03-20 13:39 ` Laurent Pinchart
2008-03-20 15:08 ` Scott Wood
2008-03-20 15:18 ` Laurent Pinchart
2008-03-20 16:24 ` Scott Wood
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