I will use SPI-NOR boot for my custom i.MX6Q board.
Then, I want to confirm how to modify MCIMX6Q-SDP board schematic for SPI-NOR boot.
Please my questions below.
According to i.MX 6Dual/6Quad SABRE-SD Linux Release Notes, I understand KEY relative PINs don't support SPI boot.
Then, should I change all SPI-NOR pin assignments (CLK, MOSI, MISO, CS) from KEY relative pins?
Or can I use if a specified pin is changed from KEY pin?)
(e.g. I can use SPI boot if CS singal is changed from KEY_ROW1 pin to EIM_EB2 pin)
I understand SABRE-AI can boot from SPI-NOR, and it uses EIM_Dxx pins for SPI-NOR.
Then, I want to confirm whether i.MX6 support SPI-NOR boot from pins other than EIM_Dxx.
(e.g. CSI0_DAT pin for SPI clock, DISP0_DAT15 pin for SPI chip select, etc...)
Could you let me know it?