Problem detecting eMMC from uboot

[anho13]

Hi, we have a board based on SAMA5D27-SOM1-EK where we have removed the SD Card slot and have a micron eMMC as SDMMC0.

When we build at91-bootstrap to run from QSPI and load u-boot from eMMC, at91bootstrap successfully reads the u-boot binary to memory and executes it. From that point we can not reach the eMMC anymore.

We modified the sdhc_init() function in /driver/sdhc.c to force card detect and activate high speed to get it working.
sdhc_writeb(SDMMC_MC1R, sdhc_readb(SDMMC_MC1R) | SDMMC_MC1R_FCD);
sdhc_writeb(SDMMC_HC1R, sdhc_readb(SDMMC_HC1R) | SDMMC_HC1R_HSEN);

When we try to build both at91bootstrap and u-boot to run from QSPI we have the same problem.

Any suggestions...?

`RomBOOT
ba_offset = 0xb ...

Dump DDRAMC Registers:
@address: 0x0 0x4 0x8 0xc
0xf000c000: 0x10 0x3004ff 0xd00039 0x22239337
0xf000c010: 0x2c81716 0x82482 0x33338 0x10000
0xf000c020: 0x16 0x50008 0x0 0x0
0xf000c030: 0x6 0xf6504 0x0 0x0
0xf000c040: 0x0 0x0 0x0 0x0
0xf000c050: 0x0 0x0 0x0 0x1
0xf000c060: 0x0 0x0 0x0 0x0
0xf000c070: 0x0 0x0 0x0 0x0
0xf000c080: 0x0 0x0 0x0 0x0
0xf000c090: 0x0 0x0 0x0 0x0
0xf000c0a0: 0x0 0x0 0x0 0x0
0xf000c0b0: 0x0 0x0 0x1 0x0
0xf000c0c0: 0x0 0x0 0x0 0x0
0xf000c0d0: 0x0 0x0 0x0 0x0
0xf000c0e0: 0x0 0x0 0x0 0x4000
0xf000c0f0: 0x484d5044 0x44524320 0x0 0x20301
0xf000c100: 0x0 0x0 0x4040404 0x3030303
0xf000c110: 0x0 0x1 0x4304301 0x0
0xf000c120: 0x0 0x0 0xd00 0xd00
0xf000c130: 0xd00 0xd00 0xe00 0xe00
0xf000c140: 0xe00 0xe00 0x11 0x11
0xf000c150: 0x11 0x11 0x10 0x0
Applying VDDSDMMC errata to ID: 0x33

AT91Bootstrap 4.0.6-rc1-dirty (2023-06-20 15:38:05)

All interrupts redirected to AIC
JUMP_ADDR: 0x23f00000
at91-qspi: cmd->inst = 0x66
at91-qspi: cmd->inst = 0x99
at91-qspi: cmd->inst = 0x66
at91-qspi: cmd->inst = 0x99
at91-qspi: cmd->inst = 0x9f
SF: Got Manufacturer and Device ID: bf2643
at91-qspi: cmd->inst = 0x6
at91-qspi: cmd->inst = 0x98
at91-qspi: cmd->inst = 0x5
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x5a
at91-qspi: cmd->inst = 0x35
at91-qspi: cmd->inst = 0x5
at91-qspi: cmd->inst = 0x6
at91-qspi: cmd->inst = 0x1
at91-qspi: cmd->inst = 0x5
at91-qspi: cmd->inst = 0x35
SF: Copy 0xa0000 bytes from 0x8000 to 0x23f00000
at91-qspi: cmd->inst = 0xeb
SF: Done to load image

U-Boot 2023.04-01086-gbad2618b8c-dirty (Jun 20 2023 - 14:44:20 +0200)

CPU: SAMA5D27 1G bits DDR2 SDRAM
Crystal frequency: 24 MHz
CPU clock : 492 MHz
Master clock : 164 MHz
DRAM: 128 MiB
done setting gpios
Core: 131 devices, 24 uclasses, devicetree: separate
MMC: sdio-host@a0000000: 0, sdio-host@b0000000: 1

In: serial
Out: serial
Err: serial
Net: eth0: ethernet@f8008000
=> mmc list
sdio-host@a0000000: 0
sdio-host@b0000000: 1
=> mmc info
=>`