omap3: mmc: add 1.8v bias setting for MMC1

Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud@3adev.fr>

arch/arm/include/asm/arch-omap3/mmc_host_def.h

@@ -51,6 +51,7 @@ typedef struct t2 {
 #define PBIASLITEPWRDNZ0		(1 << 1)
 #define PBIASSPEEDCTRL0			(1 << 2)
 #define PBIASLITEPWRDNZ1		(1 << 9)
+#define PBIASLITEVMODE0			(1 << 0)
 
 #define CTLPROGIO1SPEEDCTRL		(1 << 20)
 

drivers/mmc/omap_hsmmc.c

@@ -134,6 +134,10 @@ static unsigned char mmc_board_init(struct mmc *mmc)
 
 	pbias_lite = readl(&t2_base->pbias_lite);
 	pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
+#ifdef CONFIG_TARGET_OMAP3_CAIRO
+	/* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
+	pbias_lite &= ~PBIASLITEVMODE0;
+#endif
 	writel(pbias_lite, &t2_base->pbias_lite);
 
 	writel(pbias_lite | PBIASLITEPWRDNZ1 |