DP_EDP_DPCD_REV
result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
if (drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_DPCD_REV,