I have board with MCIMX7D5EVM10SD and I have problems to get to USB serial downloader.
eMMC connected to SDHC1
SD1_CD used as uart and is low on boot
BOOT_MODE0 = 1
BOOT_MODE1 = 0
USB_OTG1_ID = floating, 1v8 measured
So according to manual boot loader should try SD/MMC manufacture mode before USB serial download mode. And I can see with scope this happening. Unfortunately after fail bootloader is not jumping to USB it is keep re-trying SD/MMC for ~100ms and then just stop.
When I make SD1_CD = 1 bootloader just go straight to USB serial and it works fine.
What I'm doing wrong? or is manual correct?