SPD_DDR3_MTB_PS
uint64_t delay[3] = { d1v25 * SPD_DDR3_MTB_PS, d1v35 * SPD_DDR3_MTB_PS,
d1v5 * SPD_DDR3_MTB_PS };
spd_nvl_insert_u32(si, key, SPD_DDR3_MTB_PS);
const uint64_t ps = (uint64_t)si->si_data[off] * SPD_DDR3_MTB_PS;