mmRLC_SRM_CNTL
tmp = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_SRM_CNTL));
WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_SRM_CNTL), tmp);
{ 0x00000002, mmRLC_SRM_CNTL },