From: Adam Ford <aford...@gmail.com>
On the OMAP36xx (and 37xx) the CONTROL_WKUP_CTRL register has
a field (bit 6) named GPIO_IO_PWRDNZ. If 0, the IO buffers which
are related to the MMC are disabled. After the PBIAS is configured,
this bit should be set high to enable the MMC port.
Signed-off-by: Adam Ford <aford...@gmail.com>
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 0a1ee40..069fd5a 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -38,6 +38,7 @@
#include <asm/arch/sys_proto.h>
#endif
#include <dm.h>
+#include <asm/arch-omap3/mux.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -115,6 +116,11 @@ static unsigned char mmc_board_init(struct mmc *mmc)
PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
&t2_base->pbias_lite);
+ if (get_cpu_family() == CPU_OMAP36XX)
+ writel(readl(OMAP34XX_CTRL_WKUP_CTRL) |
+ OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
+ OMAP34XX_CTRL_WKUP_CTRL);
+
writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
&t2_base->devconf0);
--
2.7.4
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