We are working imx6q. We can download image to SD card using SD2 and boot with the SD card. We can download image to eMMC, but we can't boot with eMMC, there is no information in the debug port.
Boot to u-boot with SD card , check the information of mmc device, showing as follow:
=> mmc list
=> mmc dev 0 //SD card
mmc0 is current device
=> mmc dev 1
MMC: no card present // not find eMMC
mmc1(part 0) is current device
=> mmc dev 2
Card did not respond to voltage select!
mmc2(part 0) is current device
Please help me analyze the reason. How can I solve the problem?