* USDHC3 is for SD on base board On DDR4 board, USDHC1 is mux for NAND,
* USDHC2 is for SD, USDHC3 is for SD on base board
*/
* USDHC3 is for SD on base board On DDR4 board, USDHC1 is mux for NAND,
* USDHC2 is for SD, USDHC3 is for SD on base board
*/