| To: | Bruno Randolf <520066427640-0001@t-online.de> |
|---|---|
| Subject: | Re: Hi-Speed USB controller and au1500 |
| From: | Ralf Baechle <ralf@linux-mips.org> |
| Date: | Sat, 23 Oct 2004 17:24:10 +0200 |
| Cc: | linux-mips@linux-mips.org, "'Eric DeVolder'" <eric.devolder@amd.com> |
| In-reply-to: | <200410231638.20982.bruno.randolf@4g-systems.biz> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <CECB0B0453C6D511BEB800104B70FA47B4A025@STARBASE> <200410231638.20982.bruno.randolf@4g-systems.biz> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.4.1i |
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 |
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