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From 0dd14c6a6f40cb47fd8517e9e9d48f0a119e9aa9 Mon Sep 17 00:00:00 2001
From: Steve Sakoman <steve@sakoman.com>
Date: Thu, 29 Apr 2010 10:28:14 -0700
Subject: [PATCH 40/50] OMAP: mmc: add support for second and third mmc channels
Boards wishing to use this feature should define CONFIG_SYS_MMC_SET_DEV
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
---
drivers/mmc/omap3_mmc.c | 39 +++++++++++++++++++++++++++-
include/asm-arm/arch-omap3/mmc_host_def.h | 15 +++++++++--
2 files changed, 49 insertions(+), 5 deletions(-)
diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c
index 96c0e65..bf650ba 100644
--- a/drivers/mmc/omap3_mmc.c
+++ b/drivers/mmc/omap3_mmc.c
@@ -52,7 +52,27 @@ const unsigned short mmc_transspeed_val[15][4] = {
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 @@ block_dev_desc_t *mmc_get_dev(int dev)
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 @@ unsigned char mmc_board_init(void)
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 @@ unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt,
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;
diff --git a/include/asm-arm/arch-omap3/mmc_host_def.h b/include/asm-arm/arch-omap3/mmc_host_def.h
index aa751c9..43dd705 100644
--- a/include/asm-arm/arch-omap3/mmc_host_def.h
+++ b/include/asm-arm/arch-omap3/mmc_host_def.h
@@ -29,13 +29,20 @@
#define T2_BASE 0x48002000
typedef struct t2 {
- unsigned char res1[0x274];
+ unsigned char res1[0x274]; /* 0x000 */
unsigned int devconf0; /* 0x274 */
- unsigned char res2[0x2A8];
+ unsigned char res2[0x060]; /* 0x278 */
+ unsigned int devconf1; /* 0x2D8 */
+ unsigned char res3[0x244]; /* 0x2DC */
unsigned int pbias_lite; /* 0x520 */
} t2_t;
#define MMCSDIO1ADPCLKISEL (1 << 24)
+#define MMCSDIO2ADPCLKISEL (1 << 6)
+
+#define EN_MMC1 (1 << 24)
+#define EN_MMC2 (1 << 25)
+#define EN_MMC3 (1 << 30)
#define PBIASLITEPWRDNZ0 (1 << 1)
#define PBIASSPEEDCTRL0 (1 << 2)
@@ -44,7 +51,9 @@ typedef struct t2 {
/*
* OMAP HSMMC register definitions
*/
-#define OMAP_HSMMC_BASE 0x4809C000
+#define OMAP_HSMMC1_BASE 0x4809C000
+#define OMAP_HSMMC2_BASE 0x480B4000
+#define OMAP_HSMMC3_BASE 0x480AD000
typedef struct hsmmc {
unsigned char res1[0x10];
--
1.6.6.1
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