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IGEP0146: Fixed Unstable MMC BUG: SWUBIMX17-33

Define separated MUX for PAD CLK of USDHC controllers
Redefine pullups and DSE resistance of other PADs of USDHC controllers
Key point was to reduce the DSE resistance from 80 ohms to 48 ohms and to put CLK line at 100K pulldown

Signed-off-by: Jose Miguel Sanchez Sanabria <jsanabria@iseebcn.com>
isee_imx_v2017.03_4.9.11_1.0.0_ga_TEST
Jose Miguel Sanchez Sanabria 3 years ago
parent
commit
28bc336206
2 changed files with 15 additions and 11 deletions
  1. +10
    -6
      board/isee/igep0146/igep0146.c
  2. +5
    -5
      configs/igep0146_imx6ul_512M_defconfig

+ 10
- 6
board/isee/igep0146/igep0146.c View File

@ -63,9 +63,14 @@ DECLARE_GLOBAL_DATA_PTR;
#define MDIO_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_PUE | \
PAD_CTL_DSE_48ohm | PAD_CTL_SRE_FAST | PAD_CTL_ODE)
#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_48ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS | \
PAD_CTL_PUE | PAD_CTL_PKE)
#define USDHC_PAD_CLK_CTRL (PAD_CTL_PUS_100K_DOWN | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_48ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#ifdef CONFIG_SYS_I2C_MXC
#define I2C_PAD_CTRL ( PAD_CTL_PUS_22K_UP | PAD_CTL_ODE | PAD_CTL_SPEED_MED | \
@ -133,7 +138,7 @@ static iomux_v3_cfg_t const enet1_pads[] = {
/* sd 1 */
static iomux_v3_cfg_t const usdhc1_pads[] = {
MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
@ -145,8 +150,7 @@ static iomux_v3_cfg_t const usdhc1_pads[] = {
/* emmc */
static iomux_v3_cfg_t const usdhc2_pads[] = {
MX6_PAD_NAND_ALE__GPIO4_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
MX6_PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
MX6_PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),


+ 5
- 5
configs/igep0146_imx6ul_512M_defconfig View File

@ -5,20 +5,20 @@ CONFIG_MX6UL=y
CONFIG_TARGET_IGEP0146=y
CONFIG_BOOTDELAY=3
CONFIG_BOARD_EARLY_INIT_F=y
# CONFIG_CMD_IMLS is not set
CONFIG_CMD_MEMTEST=y
# CONFIG_CMD_FLASH is not set
CONFIG_CMD_GPIO=y
CONFIG_CMD_CACHE=y
CONFIG_OF_LIBFDT=y
CONFIG_DM=y
CONFIG_DM_THERMAL=y
CONFIG_DISPLAY_BOARDINFO=y
CONFIG_DEFAULT_FDT_FILE="imx6ul-igep-base0040rd102.dtb"
CONFIG_HUSH_PARSER=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_CACHE=y
CONFIG_CMD_MMC=y
CONFIG_CMD_EXT2=y
CONFIG_CMD_EXT4=y
CONFIG_CMD_EXT4_WRITE=y
CONFIG_CMD_FAT=y
CONFIG_CMD_FS_GENERIC=y
CONFIG_CMD_MEMTEST=y
# CONFIG_CMD_IMLS is not set
# CONFIG_CMD_FLASH is not set

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