[U-Boot] [PATCH v4 12/15] imx6: icorem6_rqs: Add eMMC boot support

Jagan Teki
2017-02-24T10:15:23Z

From: Jagan Teki <jagan@amarulasolutions.com>

Boot from eMMC:
--------------
U-Boot SPL 2017.01-00318-g8e243f8 (Jan 26 2017 - 11:53:21)
Trying to boot from MMC2

U-Boot 2017.01-00318-g8e243f8 (Jan 26 2017 - 11:53:21 +0100)

CPU: Freescale i.MX6D rev1.2 at 792 MHz
Reset cause: POR
Model: Engicam i.CoreM6 Quad/Dual RQS Starter Kit
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
switch to partitions #0, OK
mmc1(part 0) is current device
Net: No ethernet found.
Hit any key to stop autoboot: 0
Booting from mmc ...
switch to partitions #0, OK
mmc1(part 0) is current device

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
board/engicam/icorem6_rqs/icorem6_rqs.c | 24 ++++++++++++++++++++++--
include/configs/imx6qdl_icore_rqs.h | 2 +-
2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/board/engicam/icorem6_rqs/icorem6_rqs.c b/board/engicam/icorem6_rqs/icorem6_rqs.c
index e3c520f..175bda5 100644
--- a/board/engicam/icorem6_rqs/icorem6_rqs.c
+++ b/board/engicam/icorem6_rqs/icorem6_rqs.c
@@ -77,8 +77,22 @@ static iomux_v3_cfg_t const usdhc3_pads[] = {
IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};

-struct fsl_esdhc_cfg usdhc_cfg[1] = {
+static iomux_v3_cfg_t const usdhc4_pads[] = {
+ IOMUX_PADS(PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+ IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+};
+
+struct fsl_esdhc_cfg usdhc_cfg[2] = {
{USDHC3_BASE_ADDR, 1, 4},
+ {USDHC4_BASE_ADDR, 1, 8},
};

int board_mmc_getcd(struct mmc *mmc)
@@ -88,6 +102,7 @@ int board_mmc_getcd(struct mmc *mmc)

switch (cfg->esdhc_base) {
case USDHC3_BASE_ADDR:
+ case USDHC4_BASE_ADDR:
ret = 1;
break;
}
@@ -102,7 +117,8 @@ int board_mmc_init(bd_t *bis)
/*
* According to the board_mmc_init() the following map is done:
* (U-boot device node) (Physical Port)
- * mmc0 USDHC3
+ * mmc0 USDHC3
+ * mmc1 USDHC4
*/
for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
switch (i) {
@@ -110,6 +126,10 @@ int board_mmc_init(bd_t *bis)
SETUP_IOMUX_PADS(usdhc3_pads);
usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
break;
+ case 1:
+ SETUP_IOMUX_PADS(usdhc4_pads);
+ usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
+ break;
default:
printf("Warning - USDHC%d controller not supporting\n",
i + 1);
diff --git a/include/configs/imx6qdl_icore_rqs.h b/include/configs/imx6qdl_icore_rqs.h
index 6f7195d..cd94c5f 100644
--- a/include/configs/imx6qdl_icore_rqs.h
+++ b/include/configs/imx6qdl_icore_rqs.h
@@ -124,7 +124,7 @@
/* MMC */
#ifdef CONFIG_FSL_USDHC
# define CONFIG_SYS_MMC_ENV_DEV 0
-# define CONFIG_SYS_FSL_USDHC_NUM 1
+# define CONFIG_SYS_FSL_USDHC_NUM 2
# define CONFIG_SYS_FSL_ESDHC_ADDR 0
#endif

--
1.9.1