omap3630: Set omap3630 MMC1 I/O speed to 52Mhz

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@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 7bef170..0c3c72d 100644 (file)
--- 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 (file)
--- 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)