On Tue, 15 Jan 2019 at 09:10, Jan Kiszka <jan.kiszka@xxxxxx> wrote: > > On 06.01.19 10:53, Jan Kiszka wrote: > > On 03.01.19 22:32, Ulf Hansson wrote: > >> On Wed, 2 Jan 2019 at 23:21, John Stultz <john.stultz@xxxxxxxxxx> wrote: > >>> > >>> Adding a few folks to cc from the thread here: > >>> https://patchwork.kernel.org/patch/10734021/ > >>> > >>> As this sounds like a very similar issue. > >>> thanks > >>> -john > >> > >> John, thanks for looping me in. > >> > >>> > >>> On Sun, Dec 30, 2018 at 3:38 AM Jan Kiszka <jan.kiszka@xxxxxx> wrote: > >>>> > >>>> From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > >>>> > >>>> Somewhere along recent changes to power control of the wl1835, power-on > >>>> became very unreliable on the hikey, failing like this: > >>>> > >>>> wl1271_sdio: probe of mmc2:0001:1 failed with error -16 > >>>> wl1271_sdio: probe of mmc2:0001:2 failed with error -16 > >>>> > >>>> After playing with some dt parameters and comparing to other users of > >>>> this chip, it turned out we need some power-on delay to make things > >>>> stable again. In contrast to those other users which define 200 ms, the > >>>> hikey is already very happy with 1 ms. > >> > >> According to the discussions we had so far, this doesn't sound like > >> the correct solution. > >> > >> I am intending to post patch soon, however, I am not sure exactly what > >> solution to pick yet. I will keep you on cc - and of course I > >> appreciate if you could help to test. > >> > > > > FWIW, the Ultra96 is also affected. Here I worked around it by using a 10 ms > > power-on delay. The original workaround from the other thread did not help. > > Looking forward to the proper fix now! > > > > Any news on this regression? I will post a (or two) patch during the day. Kind regards Uffe
