From: Ralf Baechle <ralf@linux-mips.org>
To: Bruno Randolf <520066427640-0001@t-online.de>
Cc: linux-mips@linux-mips.org, "'Eric DeVolder'" <eric.devolder@amd.com>
Subject: Re: Hi-Speed USB controller and au1500
Date: Sat, 23 Oct 2004 17:24:10 +0200 [thread overview]
Message-ID: <20041023152410.GA15788@linux-mips.org> (raw)
In-Reply-To: <200410231638.20982.bruno.randolf@4g-systems.biz>
On Sat, Oct 23, 2004 at 04:38:15PM +0200, Bruno Randolf wrote:
> would it be possible to use CONFIG_NONCOHERENT_IO=y only for USB, and not PCI?
> we have PCI cards (prism54) which only work without CONFIG_NONCOHERENT_IO, so
> at the moment we can either have USB host or prism54 based PCI cards...
At the moment you can use such a partially coherent system with with
CONFIG_NONCOHERENT_IO. It should work but of course not be overly efficient.
Supporting I/O coherency on a per device base is on the to do list.
Ralf
next prev parent reply other threads:[~2004-10-23 15:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-22 14:15 Hi-Speed USB controller and au1500 Yates, John
2004-10-23 14:38 ` Bruno Randolf
2004-10-23 15:24 ` Ralf Baechle [this message]
2004-10-23 17:33 ` Pete Popov
2004-10-23 18:25 ` Bruno Randolf
2004-10-23 20:06 ` Pete Popov
2004-10-24 0:30 ` Pete Popov
-- strict thread matches above, loose matches on Subject: below --
2004-10-14 17:35 Yates, John
2004-10-14 18:40 ` Pete Popov
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