Re: [loongson-PATCH-v1 24/27] fixup for FUJITSU disk

Bartlomiej Zolnierkiewicz
2009-05-25T14:51:59Z

On Monday 25 May 2009 09:35:48 胡洪兵 wrote:
> yanh 写道:

[...]

> > the cs5536 pata driver have some geode platform dependent codes. We can
> > just ignore it, but the performance is poor(using hdparm to test it),
> > which only get 22+ MB/s. we find it only use udma2. However if using
> > amd74xx driver, it can set udma5, and the speed can reach to 50+ MB/s.
> >
> > we will test whether this driver is working well without this patch.
> >
> > Anyway, thanks your advice.
> >
> Use the driver drivers/ata/pata_cs5536.c, unfortunately it also have the
> same issue.

Both drivers (pata_cs5536 & cs5536) should handle UDMA5.

Could you please explain the issue with platform specific code a bit more?

Is it related to a cable detection by any chance?

Thanks.
Bart