nvkm_wraux
ret = nvkm_wraux(outp->dp.aux, addr, lt->conf, 4);
ret = nvkm_wraux(outp->dp.aux, DPCD_LC0F, lt->pc2conf, 2);
nvkm_wraux(outp->dp.aux, addr, &sink_tp, 1);
ret = nvkm_wraux(outp->dp.aux, DPCD_LC00_LINK_BW_SET, sink, 2);
ret = nvkm_wraux(outp->dp.aux, DPCD_LC15_LINK_RATE_SET, &sink[0], sizeof(sink[0]));
int ret = nvkm_wraux(aux, addr, &data, 1);