I tried to set the baud rate of a UARTs to 1 Mbps on the SKIT:
I checked "/dev/ttymxc0", "/dev/ttymxc2", "/dev/ttymxc4" and "/dev/ttymxc5". No one accept the configuration of 1 Mbps. But 921600 bps and slower is working fine.
According to the "i.MX 6SoloX Applications Processor Reference Manual" chapter "1.4 Features", all UART interfaces supports up to 4 Mbps.
Can any one hint me to the part that limits the UART baud rate?