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TDA2EG-17: MMC: no card present

Part Number: TDA2EG-17
Other Parts Discussed in Thread: DRA742

I use tda2eg board of our company to copy MLO and uboot.img to SD card, which is connected to mmc1. Uboot can boot through SD card, but it can't detect SD card after boot. I switch to SD card through instruction: MMC dev 0, but there is the following error MMC: no card present. What's the reason?

Here is the complete boot log:

U-Boot SPL 2019.01 (Apr 16 2020 - 11:14:08 +0800)
DRA722-GP ES2.1
Trying to boot from MMC1
no pinctrl state for default mode
Loading Environment from MMC... *** Warning - bad CRC, using default environment

U-Boot 2019.01 (Apr 16 2020 - 11:14:08 +0800)

CPU : DRA722-GP ES2.1
Model: TI DRA742
Board: DRA72x EVM REV
DRAM: 512 MiB
NAND: 0 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from MMC... *** Warning - bad CRC, using default environment

Warning: fastboot.board_rev: unknown board revision
Net: Could not get PHY for ethernet@48484000: addr 2

Warning: ethernet@48484000 using MAC address from ROM
eth0: ethernet@48484000
Hit any key to stop autoboot: 0
=> mmc dev 0
MMC: no card present
=>