I'm working on a custom board based on an iMX6 solo X (ref.: MCIMX6X1CVO08AB).
On the SD3 port, i have a WL1805 module which works in 1V8. The SD3 port is powered by NVCC_HIGH(3V1 on my board) and NVCC_LOW (1V8).
I am booting from an eMMC on SD4 port from fuse. In Table 5-6. MMC/eMMC Boot Fusemap,BOOT_CFG2 is use for setting SD3 voltage. Is BOOT_CFG2 worked only when booting from SD3, or it could be use in my case for setting the SD3 port power when booting from SD4 ?
If not, how can i set SD3 power to NVCC_LOW in linux ?
Thanks for your help,