On Fri, Oct 07, 2016 at 10:52:17AM +0200, Linus Walleij wrote: > This fixes a very annoying regression on the Snowball SD card > that has been around for a while. It turns out that the device > tree does not configure the direction pins properly, nor sets > up the pins for the voltage converter properly at boot. Unless > all things are correctly set up, the feedback clock will not > work, and makes the driver spew messages in the console (but > it works, very slowly): > > root@Ux500:/ mount /dev/mmcblk0p2 /mnt/ > [ 9.953460] mmci-pl18x 80126000.sdi0_per1: error during DMA transfer! > [ 9.960296] mmcblk0: error -110 sending status command, retrying > [ 9.966461] mmcblk0: error -110 sending status command, retrying > [ 9.972534] mmcblk0: error -110 sending status command, aborting > > Fix this by rectifying the device tree to correspond to that of > the Ux500 HREF boards plus the DAT31DIR setting that is unique for > the Snowball, and things start working smoothly. Add in the SDR12 > and SDR25 modes which this host can do without any problems. > > I don't know if this has ever been correct, sadly. It works after > this patch. > > Cc: stable@xxxxxxxxxxxxxxx > Reported-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> > Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > --- > ARM SoC folks: please apply this directly for fixes. Applied, thanks. -Olof -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html