SKL_DRAM_DDR_TYPE_MASK
switch (val & SKL_DRAM_DDR_TYPE_MASK) {
#define SKL_DRAM_DDR_TYPE_DDR4 REG_FIELD_PREP(SKL_DRAM_DDR_TYPE_MASK, 0)
#define SKL_DRAM_DDR_TYPE_DDR3 REG_FIELD_PREP(SKL_DRAM_DDR_TYPE_MASK, 1)
#define SKL_DRAM_DDR_TYPE_LPDDR3 REG_FIELD_PREP(SKL_DRAM_DDR_TYPE_MASK, 2)
#define SKL_DRAM_DDR_TYPE_LPDDR4 REG_FIELD_PREP(SKL_DRAM_DDR_TYPE_MASK, 3)