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authorJohn Rigby <john.rigby@linaro.org>2011-04-19 05:48:14 +0000
committerAndy Fleming <afleming@freescale.com>2011-04-29 03:22:17 -0500
commit4ca9244d74f146a0605f5bee28a66e39aae88d3e (patch)
tree3845de661f7730fe033b9849a190218fb5322e3c /drivers/mmc/omap_hsmmc.c
parent8feafcc49c0b7a9c541904f95a43dbef2fecc38b (diff)
MMC: omap_hsmmc.c: disable multiblock rw on old rev omap34xx silicon
Signed-off-by: John Rigby <john.rigby@linaro.org>
Diffstat (limited to 'drivers/mmc/omap_hsmmc.c')
-rw-r--r--drivers/mmc/omap_hsmmc.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index dcbde8935a..957b9877a0 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;