ENGR00136038: Remove config CONFIG_EMMC_DDR_MODE

1. As we can check DDR dynamically,
remove CONFIG_EMMC_DDR_MODE in mmc.c.
2. Add config CONFIG_EMMC_DDR_PORT_DETECT
config for some boards that only some board support DDR.

Signed-off-by: Terry Lv <r65388@freescale.com>

2 files changed, 13 insertions, 21 deletions

diff --git a/drivers/mmc/imx_esdhc.c b/drivers/mmc/imx_esdhc.c
index f9a3ad6..c0eaa97 100644
--- a/drivers/mmc/imx_esdhc.c
+++ b/drivers/mmc/imx_esdhc.c
@@ -340,7 +340,8 @@ static void esdhc_dll_setup(struct mmc *mmc)
 	uint dll_control;
 
 	/* For i.MX50 TO1, need to force slave override mode */
-	if (get_board_rev() == (0x50000 | CHIP_REV_1_0)) {
+	if (get_board_rev() == (0x50000 | CHIP_REV_1_0) ||
+			get_board_rev() == 0x53000) {
 		dll_control = readl(&regs->dllctrl);
 
 		dll_control &= ~(ESDHC_DLLCTRL_SLV_OVERRIDE_VAL_MASK |
@@ -491,6 +492,11 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 		>> ESDHC_HOSTVER_VVN_SHIFT) >= ESDHC_HOSTVER_DDR_SUPPORT)
 		mmc->host_caps |= EMMC_MODE_4BIT_DDR;
 
+#ifdef CONFIG_EMMC_DDR_PORT_DETECT
+	if (detect_mmc_emmc_ddr_port(cfg))
+		mmc->host_caps |= EMMC_MODE_4BIT_DDR;
+#endif
+
 	mmc->f_min = 400000;
 	mmc->f_max = MIN(mxc_get_clock(MXC_ESDHC_CLK), 50000000);
 
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 9f915cd..6299635 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -91,14 +91,12 @@ mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src)
 
 	blklen = mmc->write_bl_len;
 
-#ifdef CONFIG_EMMC_DDR_MODE
 	if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
 		mmc->bus_width == EMMC_MODE_8BIT_DDR) {
 		err = 0;
 		blklen = 512;
 	} else
-#endif
-	err = mmc_set_blocklen(mmc, mmc->write_bl_len);
+		err = mmc_set_blocklen(mmc, mmc->write_bl_len);
 
 	if (err) {
 		puts("set write bl len failed\n\r");
@@ -180,11 +178,9 @@ int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
 	int endblock = lldiv(src + size - 1, mmc->read_bl_len);
 	int err = 0;
 
-#ifdef CONFIG_EMMC_DDR_MODE
 	if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
 		mmc->bus_width == EMMC_MODE_8BIT_DDR)
 		blklen = 512;
-#endif
 
 	/* Make a buffer big enough to hold all the blocks we might read */
 	buffer = malloc(blklen);
@@ -194,14 +190,13 @@ int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size)
 		return -1;
 	}
 
-#ifdef CONFIG_EMMC_DDR_MODE
 	if (mmc->bus_width == EMMC_MODE_4BIT_DDR ||
 		mmc->bus_width == EMMC_MODE_8BIT_DDR)
 		err = 0;
-	else
-#endif
-	/* We always do full block reads from the card */
-	err = mmc_set_blocklen(mmc, mmc->read_bl_len);
+	else {
+		/* We always do full block reads from the card */
+		err = mmc_set_blocklen(mmc, mmc->read_bl_len);
+	}
 
 	if (err)
 		goto free_buffer;
@@ -513,7 +508,7 @@ static int mmc_change_freq(struct mmc *mmc)
 		mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
 	else
 		mmc->card_caps |= MMC_MODE_HS;
-#ifdef CONFIG_EMMC_DDR_MODE
+
 	if (cardtype & EMMC_MODE_DDR_3V) {
 		if (mmc->card_caps & MMC_MODE_8BIT)
 			mmc->card_caps |= EMMC_MODE_8BIT_DDR;
@@ -521,8 +516,6 @@ static int mmc_change_freq(struct mmc *mmc)
 			mmc->card_caps |= EMMC_MODE_4BIT_DDR;
 	}
 
-#endif
-
 no_err_rtn:
 	free(ext_csd);
 	return 0;
@@ -715,9 +708,7 @@ int mmc_switch_partition(struct mmc *mmc, uint part, uint enable_boot)
 	int err;
 	uint old_part, new_part;
 	char boot_config;
-#ifdef CONFIG_EMMC_DDR_MODE
 	char boot_bus_width, card_boot_bus_width;
-#endif
 
 	/* partition must be -
 		0 - user area
@@ -802,7 +793,6 @@ int mmc_switch_partition(struct mmc *mmc, uint part, uint enable_boot)
 		goto err_rtn;
 	}
 
-#ifdef CONFIG_EMMC_DDR_MODE
 	/* Program boot_bus_width field for eMMC 4.4 boot mode */
 	if ((ext_csd[EXT_CSD_CARD_TYPE] & 0xC) && enable_boot != 0) {
 
@@ -838,7 +828,6 @@ int mmc_switch_partition(struct mmc *mmc, uint part, uint enable_boot)
 			goto err_rtn;
 		}
 	}
-#endif
 
 	/* Seems everything is ok, return the partition id before switch */
 	free(ext_csd);
@@ -1098,8 +1087,6 @@ static int mmc_startup(struct mmc *mmc)
 			mmc_set_bus_width(mmc, 8);
 		}
 
-#ifdef CONFIG_EMMC_DDR_MODE
-
 		if (mmc->card_caps & EMMC_MODE_8BIT_DDR) {
 			/* Set the card to use 8 bit DDR mode */
 			err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
@@ -1122,7 +1109,6 @@ static int mmc_startup(struct mmc *mmc)
 			/* Setup the host controller for DDR mode */
 			mmc_set_bus_width(mmc, EMMC_MODE_4BIT_DDR);
 		}
-#endif
 
 		if (mmc->card_caps & MMC_MODE_HS) {
 			if (mmc->card_caps & MMC_MODE_HS_52MHz)