MMC in U-Boot 2015.04 at imx6qSabreSD-based board.

[petertseng]

Hi i.MX Community,

I reference imx6qSabreSD trying to porting my custom board.

I need to support eMMC(SD3) and SD card slot(SD4).

In MCC device add and boot  support  i have added this following one,

#ifdef CONFIG_CMD_BMODE

static const struct boot_mode board_boot_modes[] = {

  /* 4 bit bus width */

  {"mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},

  /* 8 bit bus width */

  {"emmc", MAKE_CFGVAL(0x60, 0x58, 0x00, 0x00)},

  {NULL, 0},

};

#endif /* CONFIG_CMD_BMODE */

static struct fsl_esdhc_cfg usdhc_cfg[2] = {

  {USDHC3_BASE_ADDR}, /* eMMC */

  {USDHC4_BASE_ADDR}, /* SD Card Slot */

};

But it can not find the MMC device.

the error message follows:

U-Boot 2015.04 (Mar 31 2016 - 15:37:08)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz

CPU:   Temperature 28 C

Reset cause: POR

I2C:   ready

DRAM:  2 GiB

MMC:   MMC/SD: Reset never completed.

voltage not supported by controller

MMC Device 2 not found

No MMC card found

Using default environment

Display: (1024x600)

In:    serial

Out:   serial

Err:   serial

unsupported boot devices

check_and_clean: reg 0, flag_set 0

Recovery key pressed

Fastboot: Recovery command file found!

Unsupported bootup device for recovery: dev: 9

SATA isn't buildin

Net:   FEC [PRIME]

Normal Boot

Hope for your help!

Regards,

[aravinthkumarja]

Hi petertseng​,

You should change the uboot source code.

Can you please let me know which BSP source code you are using.??

Regards,

Aravinth

[fulinux]

Hi,

in common/env_mmc.c file this function:

void env_relocate_spec(void){

    ....

    int dev = mmc_get_env_devno();

    printf ("fulinux dev=%d\n", dev);

    ....

}

i have added "printf ("fulinux dev=%d\n", dev);", then it show log:

U-Boot 2015.04-14468-g19b5506-dirty (Apr 17 2016 - 22:49:57)

CPU:  Freescale i.MX6Q rev1.5 at 792 MHz

CPU:  Temperature 26 C

Reset cause: POR

Board: MX6-SabreSD

I2C:  ready

DRAM:  3.8 GiB

fulinux 1 MMC:  FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2, FSL_SDHC: 3

fulinux initr_env()

fulinux env_relocate()

fulinux dev=-1

fulinux env_relocate_spec

fuliux MMC Device -1 not found

fulinux No MMC card found

Using default environment

what should i do

[alejandrolozan1 · Accepted solution]

              Hi,

You may try to change the below macros:

#define CONFIG_SYS_FSL_USDHC_NUM  3

              #define CONFIG_SYS_MMC_ENV_DEV      0 

              with the corresponding value. As far as I know the first one determines the module to be used to save the environment variables. The second one defines the element of the fsl_esdhc_cfg usdhc_cfg array.

I hope that helps.

Best Regards,

Alejandro

[fulinux]

hi,

my question is "No MMC card found",What is the reason for this problem，Do you need any information。

The problem has been bothering me for a week, i need help.

thanks.

[fulinux]

and my board runs ok with u-boot-2009.08.

u-boot-2015.04 log:

U-Boot 2015.04-14468-g19b5506-dirty (Apr 20 2016 - 02:23:42)

initcall: 17805f44

U-Boot code: 17800000 -> 17864494  BSS: -> 178B20B4

initcall: 17801928

CPU:   Freescale i.MX6Q rev1.5 at 792 MHz

uclass_find_device_by_seq: 0 -1

uclass_find_device_by_seq: 0 0

   - -1 -1

   - not found

CPU:   Temperature 36 C

Reset cause: POR

initcall: 178063f4

Board: MX6-SabreSD

initcall: 17805f88

I2C:   ready

initcall: 17805f70

DRAM:  initcall: 17803168

initcall: 17806160

Monitor len: 000B20B4

Ram size: F0000000

Ram top: 00000000

initcall: 17805d00

initcall: 17805eec

TLB table from ffff0000 to ffff4000

initcall: 17805d18

initcall: 17805ea0

Reserving 712k for U-Boot at: fff3d000

initcall: 17805e70

Reserving 16392k for malloc() at: fef3b000

initcall: 17806040

Reserving 80 Bytes for Board Info at: fef3afb0

initcall: 17805d20

initcall: 17805e3c

Reserving 248 Bytes for Global Data at: fef3aeb8

initcall: 17805dd8

initcall: 17805d34

initcall: 178061d0

initcall: 1780613c

initcall: 17806098

RAM Configuration:

Bank #0: 10000000 3.8 GiB

DRAM:  3.8 GiB

initcall: 17805dbc

New Stack Pointer is: fef3ae90

initcall: 17805d3c

initcall: 17805d6c

Relocation Offset is: e873d000

Relocating to fff3d000, new gd at fef3aeb8, sp at fef3ae90

initcall: fff4321c

initcall: fff433a8

initcall: 17806398 (relocated to fff43398)

dram_bank_mmu_setup: bank: 0

mmu_set_region_dcache_behaviour: start=0x00000000, size=1048575, option=30

mmu_set_region_dcache_behaviour: start=0x00000009, size=262144, option=30

initcall: 17806224 (relocated to fff43224)

initcall: 1780624c (relocated to fff4324c)

initcall: 1780635c (relocated to fff4335c)

Pre-reloc malloc() used 0xd4 bytes (0 KB)

using memory 0xfef3b000-0xfff3d000 for malloc()

initcall: 17806214 (relocated to fff43214)

initcall: 17806348 (relocated to fff43348)

uclass_find_device_by_seq: 0 -1

uclass_find_device_by_seq: 0 0

   - -1 -1

   - not found

Bound device imx_thermal to root_driver

initcall: 178035d4 (relocated to fff405d4)

initcall: 17819388 (relocated to fff56388)

initcall: 17806338 (relocated to fff43338)

initcall: 178062c0 (relocated to fff432c0)

Now running in RAM - U-Boot at: fff3d000

initcall: 17803650 (relocated to fff40650)

initcall: 17806318 (relocated to fff43318)

fulinux 1 MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2, FSL_SDHC: 3

initcall: 178062dc (relocated to fff432dc)

fulinux initr_env()

fulinux env_relocate()

fulinux dev=-1

fulinux env_relocate_spec

fuliux MMC Device -1 not found

fulinux No MMC card found

Using default environment

[petertseng]

Hi Alejandro,

Many thanks for your reply.

Thanks.