| To: | Andrew Dyer <adyer@righthandtech.com> |
|---|---|
| Subject: | Re: Trouble with sound/mips/au1x00.c AC97 driver |
| From: | Ralf Baechle <ralf@linux-mips.org> |
| Date: | Tue, 13 Mar 2007 01:09:55 +0000 |
| Cc: | Sergei Shtylyov <sshtylyov@ru.mvista.com>, Marco Braga <marco.braga@gmail.com>, Domen Puncer <domen.puncer@telargo.com>, linux-mips@linux-mips.org |
| In-reply-to: | <45F5F7CA.3000503@righthandtech.com> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20070307104930.GD25248@dusktilldawn.nl> <d459bb380703082322r18879381ma4c57149a8b7adfe@mail.gmail.com> <45F350E9.3020208@cooper-street.com> <d459bb380703120157wb3dde00p4c232e300e82fd3d@mail.gmail.com> <d459bb380703120259r53889966xd8af623ff01ef297@mail.gmail.com> <20070312103927.GC14658@moe.telargo.com> <d459bb380703120609i7d3a9e1dwf7f4fa431a9631e5@mail.gmail.com> <45F57328.8000606@ru.mvista.com> <20070313004315.GA26119@linux-mips.org> <45F5F7CA.3000503@righthandtech.com> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.4.2.2i |
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 |
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