On Tue, Sep 22, 2020 at 5:14 PM Lyude Paul <lyude@xxxxxxxxxx> wrote: > > On Tue, 2020-09-22 at 17:10 -0400, Ilia Mirkin wrote: > > Can we use 6bpc on arbitrary DP monitors, or is there a capability for > > it? Maybe only use 6bpc if display_info.bpc == 6 and otherwise use 8? > > I don't think that display_info.bpc actually implies a minimum bpc, only a > maximum bpc iirc (Ville would know the answer to this one). The other thing to > note here is that we want to assume the lowest possible bpc here since we're > only concerned if the mode passed to ->mode_valid can be set under -any- > conditions (including those that require lowering the bpc beyond it's maximum > value), so we definitely do want to always use 6bpc here even once we get > support for optimizing the bpc based on the available display bandwidth. Yeah, display_info is the max bpc. But would an average monitor support 6bpc? And if it does, does the current link training code even try that when display_info.bpc != 6? -ilia _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
