mmACP_SCRATCH_REG_4 421 sound/soc/amd/include/acp_2_2_d.h #define mmACP_SCRATCH_REG_4 0x52c4 mmACP_SCRATCH_REG_4 158 sound/soc/amd/raven/chip_offset_byte.h #define mmACP_SCRATCH_REG_4 0x1250010