>From 43454c1812043ca6b21d2594e63c93b6250a9882 Mon Sep 17 00:00:00 2001
From: Madhu <madhu.cr@xxxxxx>
Date: Tue, 27 Oct 2009 17:44:09 -0400
Subject: [PATCH]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@xxxxxx>
---
arch/arm/mach-omap2/mmc-twl4030.c | 11 +++++++++--
arch/arm/plat-omap/include/plat/control.h | 4 ++++
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/mmc-twl4030.c b/arch/arm/mach-omap2/mmc-twl4030.c
index 7bef170..1940591 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(OMAP34XX_CONTROL_PROG_IO1);
+ prog_io |= OMAP3630_PRG_SDMMC1_SPEEDCTRL;
+ omap_ctrl_writel(prog_io, OMAP34XX_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 fdb6300..47368bc 100644
--- a/arch/arm/plat-omap/include/plat/control.h
+++ b/arch/arm/plat-omap/include/plat/control.h
@@ -146,6 +146,7 @@
#define OMAP343X_CONTROL_IVA2_BOOTMOD (OMAP2_CONTROL_GENERAL + 0x0194)
#define OMAP343X_CONTROL_PBIAS_LITE (OMAP2_CONTROL_GENERAL + 0x02b0)
#define OMAP343X_CONTROL_TEMP_SENSOR (OMAP2_CONTROL_GENERAL + 0x02b4)
+#define OMAP34XX_CONTROL_PROG_IO1 (OMAP2_CONTROL_GENERAL + 0x01D8)
/* 34xx D2D idle-related pins, handled by PM core */
#define OMAP3_PADCONF_SAD2D_MSTANDBY 0x250
@@ -196,6 +197,9 @@
#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)
--
1.6.0.4
--
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