regGFX_IMU_C2PMSG_16
imu_reg_val = RREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16);
WREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16, imu_reg_val);
imu_reg_val = RREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16);
WREG32_SOC15(GC, 0, regGFX_IMU_C2PMSG_16, imu_reg_val);