I am designing a custom board with i.MX8M Mini and it will need to boot from an SD-Card.
The EVK uses the SD2 interface for SD. But on the EVK, the "Card Detect" signal is connected to the pin GPIO1_IO15 instead of the pin SD2_CD_B and I could not understand why. So I have the following questions:
1. Why isn't it connected to the SD2_CD_B pin?
2. Can I use the SD2_CD_B pin for "Card Detect" signal on my design?
3. Does the boot ROM need the CD signal?