21.12.2021 19:17, Thierry Reding пишет: > On Tue, Dec 21, 2021 at 06:47:31PM +0300, Dmitry Osipenko wrote: >> 21.12.2021 13:58, Thierry Reding пишет: >> .. >>>>>> The panel->ddc isn't used by the new panel-edp driver unless panel is >>>>>> compatible with "edp-panel". Hence the generic_edp_panel_probe() should >>>>>> either fail or crash for a such "edp-panel" since panel->ddc isn't fully >>>>>> instantiated, AFAICS. >>>>> >>>>> I've tested this and it works fine on Venice 2. Since that was the >>>>> reference design for Nyan, I suspect that Nyan's will also work. >>>>> >>>>> It'd be great if Thomas or anyone else with access to a Nyan could >>>>> test this to verify that. >>>> >>>> There is no panel-edp driver in the v5.15. The EOL of v5.15 is Oct, >>>> 2023, hence we need to either use: >>> >>> All the (at least relevant) functionality that is in panel-edp was in >>> panel-simple before it was moved to panel-edp. I've backported this set >>> of patches to v5.15 and it works just fine there. >> >> Will we be able to add patch to bypass the panel's DT ddc-i2c-bus on >> Nyan to keep the older DTBs working? > > I don't see why we would want to do that. It's quite clear that the DTB > is buggy in this case and we have a more accurate way to describe what's > really there in hardware. In addition that more accurate representation > also gets rid of a bug. Obviously because the bug is caused by the > previous representation that was not accurate. > > Given that we can easily replace the DTBs on these devices there's no > reason to make this any more complicated than it has to be. Don't you care about normal people at all? Do you assume that everyone must to be a kernel developer to be able to use Tegra devices? :/ It's not a problem for you to figure out why display is broken, for other people it's a problem. Usually nobody will update DTB without a well known reason, instead device will be dusted on a shelf. In the end you won't have any users at all.
