Re: [PATCH] arm64: dts: hikey: Give wifi some time after power-on

[Jan Kiszka]

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?

Jan