mmc: Allow host drivers to specify a max block size
Most controllers have an upper limit on the block size. Allow the host
drivers to specify this and make sure we avoid hitting this limit.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c
index ccfe656..5d48e00 100644
--- a/drivers/mmc/mmci.c
+++ b/drivers/mmc/mmci.c
@@ -534,6 +534,11 @@
*/
mmc->max_seg_size = mmc->max_sectors << 9;
+ /*
+ * Block size can be up to 2048 bytes, but must be a power of two.
+ */
+ mmc->max_blk_size = 2048;
+
spin_lock_init(&host->lock);
writel(0, host->base + MMCIMASK0);