refer to the data sheet:
External memory interfaces: The i.MX 6Solo/6DualLite processors support latest, high volume,
cost effective handheld DRAM, NOR, and NAND Flash memory standards.
— 16/32-bit LP-DDR2-800, 16/32-bit DDR3-800 and DDR3L-800 in i.MX 6Solo; 16/32/64-bit
LP-DDR2-800, 16/32/64-bit DDR3-800 and DDR3L-800, supporting DDR interleaving mode
for 2x32 LPDDR2-800 in i.MX 6DualLite