R600_SSTU_DFLT
WREG32(mmCG_SSP, (R600_SSTU_DFLT << CG_SSP__SSTU__SHIFT| R600_SST_DFLT << CG_SSP__SST__SHIFT));
WREG32_SMC(CG_SSP, (SSTU(R600_SSTU_DFLT) | SST(R600_SST_DFLT)));
r600_set_sstu(rdev, R600_SSTU_DFLT);
r600_set_sstu(rdev, R600_SSTU_DFLT);
WREG32(CG_SSP, (SSTU(R600_SSTU_DFLT) | SST(R600_SST_DFLT)));
WREG32(CG_SSP, (SSTU(R600_SSTU_DFLT) | SST(R600_SST_DFLT)));