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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>
This commit is contained in:
Madhu 2009-11-22 10:11:08 -08:00 committed by Tony Lindgren
parent 41fd03d66e
commit 555d503ff3
2 changed files with 12 additions and 2 deletions
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11
arch/arm/mach-omap2/mmc-twl4030.c
View File

@ -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);

3
arch/arm/plat-omap/include/plat/control.h
View File

@ -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)