From 4ca9244d74f146a0605f5bee28a66e39aae88d3e Mon Sep 17 00:00:00 2001 From: John Rigby Date: Tue, 19 Apr 2011 05:48:14 +0000 Subject: [PATCH] MMC: omap_hsmmc.c: disable multiblock rw on old rev omap34xx silicon Signed-off-by: John Rigby --- drivers/mmc/omap_hsmmc.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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; -- 2.39.5