The at91 mci controller internal state machine seems to often crash. This can
be fixed by resetting the controller after each command for at91rm9200 and by
setting the MCI_BLKR register on at91sam926*.
Signed-off-by: NMarc Pignat <marc.pignat@hevs.ch>
Signed-off-by: NHans J Koch <hjk@linutronix.de>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>