Bartlomiej Zolnierkiewicz 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?
I guess it's rdmsr()/wrmsr()...
Thanks.
Bart
MBR, Sergei
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