commit 8f22327a664acc886efc3f5362e6c375c82d5bcb
author Steve Sakoman <steve@sakoman.com> Thu Apr 29 10:28:14 2010 -0700
committer Sandeep Paulraj <s-paulraj@ti.com> Mon Jul 05 19:59:49 2010 -0400
tree a5fe62bbcc5a503583a171be5eac65395b1d540b
parent 54841ab50c20d6fa6c9cc3eb826989da3a22d934

OMAP: mmc: add support for second and third mmc channels

This patch adds support for the second and third mmc channels on OMAP3
processors

Boards wishing to use this feature should define CONFIG_SYS_MMC_SET_DEV
in the board config

Tested on Overo

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Tested-by: Philip Balister <philip@opensdr.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

drivers/mmc/omap3_mmc.c

diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c
index 96c0e65..25b66f2 100644
--- a/drivers/mmc/omap3_mmc.c
+++ b/drivers/mmc/omap3_mmc.c
@@ -52,7 +52,27 @@
 
 mmc_card_data cur_card_data;
 static block_dev_desc_t mmc_blk_dev;
-static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC_BASE;
+static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE;
+
+unsigned char mmc_set_dev(int dev)
+{
+	switch (dev) {
+	case 1:
+		mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE;
+		break;
+	case 2:
+		mmc_base = (hsmmc_t *)OMAP_HSMMC2_BASE;
+		break;
+	case 3:
+		mmc_base = (hsmmc_t *)OMAP_HSMMC3_BASE;
+		break;
+	default:
+		mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE;
+		return 1;
+	}
+
+	return 0;
+}
 
 block_dev_desc_t *mmc_get_dev(int dev)
 {
@@ -62,6 +82,7 @@
 unsigned char mmc_board_init(void)
 {
 	t2_t *t2_base = (t2_t *)T2_BASE;
+	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
 
 #if defined(CONFIG_TWL4030_POWER)
 	twl4030_power_mmc_init();
@@ -74,6 +95,17 @@
 	writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
 		&t2_base->devconf0);
 
+	writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
+		&t2_base->devconf1);
+
+	writel(readl(&prcm_base->fclken1_core) |
+		EN_MMC1 | EN_MMC2 | EN_MMC3,
+		&prcm_base->fclken1_core);
+
+	writel(readl(&prcm_base->iclken1_core) |
+		EN_MMC1 | EN_MMC2 | EN_MMC3,
+		&prcm_base->iclken1_core);
+
 	return 1;
 }
 
@@ -512,8 +544,11 @@
 	return 1;
 }
 
-int mmc_legacy_init(int verbose)
+int mmc_legacy_init(int dev)
 {
+	if (mmc_set_dev(dev) != 0)
+		return 1;
+
 	if (configure_mmc(&cur_card_data) != 1)
 		return 1;