PHC
WREG32_P(CG_CTX_CGTT3D_R, PHC(p), ~PHC_MASK);
WREG32_P(CG_VDDC3D_OOR, PHC(p), ~PHC_MASK);
WREG32(CG_GCOOR, PHC(grs) | SDC(p) | SU(u));