/* On LPDDR4 board, USDHC1 is for eMMC, USDHC2 is for SD on CPU 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
*/
/* On LPDDR4 board, USDHC1 is for eMMC, USDHC2 is for SD on CPU 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
*/