[PATCH 09/14] omap3630: Set omap3630 MMC1 I/O speed to 52Mhz

[Tony Lindgren]

From: Madhu <madhu.cr at ti.com>

The speed ctrl bit for MMC I/O is part of CONTROL_PROG_IO1 register
in omap3630.This patch sets it up accordingly.

Signed-off-by: Madhusudhan Chikkature <madhu.cr at ti.com>
Signed-off-by: Tony Lindgren <tony at atomide.com>
---
 arch/arm/mach-omap2/mmc-twl4030.c         |   11 +++++++++--
 arch/arm/plat-omap/include/plat/control.h |    3 +++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 7bef170..0c3c72d 100644
--- a/arch/arm/mach-omap2/mmc-twl4030.c
+++ b/arch/arm/mach-omap2/mmc-twl4030.c
@@ -213,7 +213,7 @@ static int twl4030_mmc_get_context_loss(struct device *dev)
 static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
 				int vdd)
 {
-	u32 reg;
+	u32 reg, prog_io;
 	int ret = 0;
 	struct twl_mmc_controller *c = &hsmmc[0];
 	struct omap_mmc_platform_data *mmc = dev->platform_data;
@@ -245,7 +245,14 @@ static int twl_mmc1_set_power(struct device *dev, int slot, int power_on,
 		}
 
 		reg = omap_ctrl_readl(control_pbias_offset);
-		reg |= OMAP2_PBIASSPEEDCTRL0;
+		if (cpu_is_omap3630()) {
+			/* Set MMC I/O to 52Mhz */
+			prog_io = omap_ctrl_readl(OMAP343X_CONTROL_PROG_IO1);
+			prog_io |= OMAP3630_PRG_SDMMC1_SPEEDCTRL;
+			omap_ctrl_writel(prog_io, OMAP343X_CONTROL_PROG_IO1);
+		} else {
+			reg |= OMAP2_PBIASSPEEDCTRL0;
+		}
 		reg &= ~OMAP2_PBIASLITEPWRDNZ0;
 		omap_ctrl_writel(reg, control_pbias_offset);
 
diff --git a/arch/arm/plat-omap/include/plat/control.h b/arch/arm/plat-omap/include/plat/control.h
index 79985e4..2ae8843 100644
--- a/arch/arm/plat-omap/include/plat/control.h
+++ b/arch/arm/plat-omap/include/plat/control.h
@@ -241,6 +241,9 @@
 #define OMAP2_PBIASLITEPWRDNZ0		(1 << 1)
 #define OMAP2_PBIASLITEVMODE0		(1 << 0)
 
+/* CONTROL_PROG_IO1 bits */
+#define OMAP3630_PRG_SDMMC1_SPEEDCTRL	(1 << 20)
+
 /* CONTROL_IVA2_BOOTMOD bits */
 #define OMAP3_IVA2_BOOTMOD_SHIFT	0
 #define OMAP3_IVA2_BOOTMOD_MASK		(0xf << 0)