On Thu, May 4, 2017 at 5:33 PM, John Stultz <[email protected]> wrote: > Hey folks, > Testing mainline with HiKey, I noticed graphics was no longer > properly initializing. I don't seem to get much useful info in the way > of errors, its just the kirin drm driver doesn't seem to > initialize/bind. > > Digging through the recent changes I landed on ebc944613567 ("drm: > convert drivers to use drm_of_find_panel_or_bridge"). And reverting > that patch (which doesn't revert cleanly, but cleanly enough for me to > test my device), seems to resolve the issue. > > I've not been able to root cause the problem, but I wanted to bring it > up quickly here, as folks might figure out the error faster then I > can.
Looking at the change to HiSilicon code: - endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); [...] + ret = drm_of_find_panel_or_bridge(np, 0, 0, NULL, &dsi->bridge); This should be (1,0) rather than (0,0) for (port,endpoint). Rob
