Messages in this thread |  | | Date | Fri, 04 Dec 2009 01:06:41 +0300 | | From | Sergei Shtylyov <> | | Subject | Re: [PATCH] pata_it8213: MWDMA0 is unsupported |
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Hello.
Jeff Garzik wrote:
>>>> MWDMA0 timings cannot be met with the PIIX based controller >>>> programming interface. >> >>>> This change should be safe as this is how we have been doing >>>> things in IDE it8213 host driver for years. >> >>>> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> >>>> --- >>>> Verified with the documentation (similar case as with pata_efar). >> >>> Uhhh, no... >> >>> Too many damn drivers. >> >>> Too much damn duplication. >> >>> Too much damn subtle differences here and there. >> >>> The hardware is probably fine for MWMDA0 when it comes to >>> pata_{efar,it8213}, >>> it just not documented properly in the data sheet. >> >> How so with pata_efar? The active/recovery bitfields are still 2-bit >> wide, no? > > So.... pata_it8213 is fine for MWDMA0, then?
No, TTBOMK. I just have no datasheet. However, it's programmed overclocked and even in theory the cycle time cannot exceeed 600 ns vs 480 ns spec'ed.
> Jeff
MBR, Sergei
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