On Thu, Jun 01, 2006 at 12:25:45PM -0500, John Treubig wrote: > We are currently using Promise Ultra133 TX2 (PDC20269 chip; pata_pdc2027x > driver, kernel version 2.6.15) to test and access PATA drives. If my > understanding is correct, during boot, a drive is queryied to determine > it's maximum access speed and the driver sets the access speed to be no > higher than the drive can handle. This is not speed testing the drive, but > just the drive firmware reporting it's maximum designed transfer rate. Due > to design constraints of the cabling to the drives, we need to force the > access speed lower than what the Drive reponds. Is there a mechanism to > tell the driver/LibATA to set the access speed to go no higher than a value > I supply? This can be a static setting that is set at boot, as it does not > need to be a dynamic setting. The driver includes code to do cable detect. Is this insufficient for some reason? Jeff - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
