regCP_MES_DOORBELL_CONTROL4
data = RREG32_SOC15(GC, 0, regCP_MES_DOORBELL_CONTROL4);
WREG32_SOC15(GC, 0, regCP_MES_DOORBELL_CONTROL4, data);
data = RREG32_SOC15(GC, GET_INST(GC, xcc_id), regCP_MES_DOORBELL_CONTROL4);
WREG32_SOC15(GC, GET_INST(GC, xcc_id), regCP_MES_DOORBELL_CONTROL4, data);