From: Ralf Baechle <ralf@linux-mips.org>
To: Andrew Dyer <adyer@righthandtech.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>,
Marco Braga <marco.braga@gmail.com>,
Domen Puncer <domen.puncer@telargo.com>,
linux-mips@linux-mips.org
Subject: Re: Trouble with sound/mips/au1x00.c AC97 driver
Date: Tue, 13 Mar 2007 01:09:55 +0000 [thread overview]
Message-ID: <20070313010955.GA27567@linux-mips.org> (raw)
In-Reply-To: <45F5F7CA.3000503@righthandtech.com>
On Mon, Mar 12, 2007 at 08:00:58PM -0500, Andrew Dyer wrote:
> I just looked it up.
>
> Section 2.4.5 of the Alchemy Au1550 datasheet says that a SYNC is
> guaranteed to commit the write buffer to memory.
>
> Whoever is looking at this should also pay attention to the CCA bits in
> the TLB mapping the registers (Section 2.3.6 of the manual) or the fixed
> regions (depending on the VA used) to make sure that merging and
> gathering are turned off.
MIPS does does no merging / gathering for uncached accesses. KSEG1
addresses are uncached.
Ralf
next prev parent reply other threads:[~2007-03-13 1:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-07 10:49 Trouble with sound/mips/au1x00.c AC97 driver Freddy Spierenburg
2007-03-09 7:22 ` Marco Braga
2007-03-09 10:33 ` Freddy Spierenburg
2007-03-10 13:20 ` Marco Braga
[not found] ` <45F350E9.3020208@cooper-street.com>
[not found] ` <d459bb380703120157wb3dde00p4c232e300e82fd3d@mail.gmail.com>
2007-03-12 9:59 ` Marco Braga
2007-03-12 10:39 ` Domen Puncer
2007-03-12 13:09 ` Marco Braga
2007-03-12 15:35 ` Sergei Shtylyov
2007-03-13 0:43 ` Ralf Baechle
2007-03-13 1:00 ` Andrew Dyer
2007-03-13 1:09 ` Ralf Baechle [this message]
2007-03-13 8:44 ` Marco Braga
[not found] ` <45F5DC73.9060004@cooper-street.com>
[not found] ` <d459bb380703130143w7c98e1cchdbdae6cb9a7ac7ce@mail.gmail.com>
[not found] ` <45F71FFD.202@cooper-street.com>
2007-03-13 23:12 ` Marco Braga
2007-03-15 8:04 ` Marco Braga
2007-04-16 14:47 ` Freddy Spierenburg
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