On Thu, 26 Nov 2009 15:53:58 +0100 Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> wrote: > On Wednesday 25 November 2009 06:25:52 pm Alan Cox wrote: > > On Wed, 25 Nov 2009 18:04:15 +0100 > > Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> wrote: > > > > > From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> > > > Subject: [PATCH] pata_efar: MWDMA0 is unsupported > > > > > > MWDMA0 timings cannot be met with the PIIX based controller > > > programming interface. > > > > The efar documentation makes no reference to not being capable of MWDMA0, > > so where does this come from ? No MWDMA0 is an Intel erratum it appears. > > No MWDMA0 support is a common issue on all 'PIIX-like' controllers. > > In case of this chipset while the (preliminary) documentation claims MWDMA0 > support on the 'FEATURES' page the later 'programming guide' part describes > only PIO0-4, SWDMA2, MWDMA1-2 and UDMA0-4 transfer modes as supported. Cool - I only have the original docs. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
