CAU_REG_PI_MEMORY
CAU_REG_PI_MEMORY + pi_offset * sizeof(u32), prod);
CAU_REG_PI_MEMORY + (igu_sb_id * 12 + pi) * 4, 0);
CAU_REG_PI_MEMORY + sbid * 4 * PIS_PER_SB + i * 4);