Messages in this thread | | | Subject | Re: [PATCH v2] arm64: dts: hikey: Give wifi some time after power-on | From | Wei Xu <> | Date | Mon, 4 Feb 2019 11:13:59 +0000 |
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Hi Ulf,
On 2/4/2019 6:06 AM, Ulf Hansson wrote: > On Fri, 1 Feb 2019 at 17:34, Wei Xu <xuwei5@hisilicon.com> wrote: >> >> Hi Jan, >> >> On 1/24/2019 7:52 AM, Jan Kiszka wrote: >>> From: Jan Kiszka <jan.kiszka@siemens.com> >>> >>> 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 would already be happy with 1 ms. Still, we use the safer 10 ms, >>> like on the Ultra96. >>> >>> Fixes: ea452678734e ("arm64: dts: hikey: Fix WiFi support") >>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> >>> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> >> >> Applied to the hisilicon soc dt tree. > > Wei, can you please also add a stable tag to it?
Yes, added below tag into this patch. Cc: <stable@vger.kernel.org> #4.12+
Thanks for your kindly reminder :)
Best Regards, Wei
> > [...] > > Thanks and kind regards > Uffe > > . >
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