[U-Boot] [PATCHv3 2/2] MMC: omap_hsmmc.c: disable multiblock rw on old rev omap34xx silicon

[John Rigby]

Signed-off-by: John Rigby <john.rigby at linaro.org>
---
V3: use get_cpu_family and get_cpu_rev in test, previous patch also disabled
multiblock on beagle-xm

 drivers/mmc/omap_hsmmc.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index dcbde89..957b987 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -467,6 +467,14 @@ int omap_mmc_init(int dev_index)
 
 	mmc->b_max = 0;
 
+#if defined(CONFIG_OMAP34XX)
+	/*
+	 * Silicon revs 2.1 and older do not support multiblock transfers.
+	 */
+	if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
+		mmc->b_max = 1;
+#endif
+
 	mmc_register(mmc);
 
 	return 0;
-- 
1.7.1