On Tue, 2021-10-26 at 14:29, Brian Norris wrote: > On Tue, Oct 26, 2021 at 2:20 PM Milan P. Stanić <mps@xxxxxxxxxxx> wrote: > > On Tue, 2021-10-26 at 13:55, Brian Norris wrote: > > > On Fri, Oct 22, 2021 at 4:20 AM Milan P. Stanić <mps@xxxxxxxxxxx> wrote: > > > > On my chromebook samsung peach pi (exynos-5800) wifi driver stops to > > > > work at random time, sometimes after few hours and sometimes after day > > > > or two. > > > > > > I don't have official recommendations, nor HW to test at the moment, > > > but for the record, Peach Pi should have Marvell SD 8797. You can see > > > what firmware Chrome OS used to ship for those devices here: > > > > > > https://chromium.googlesource.com/chromiumos/third_party/marvell/+/HEAD/sd8797_uapsta.bin > > > https://chromium.googlesource.com/chromiumos/third_party/marvell/+log/HEAD/sd8797_uapsta.bin > > > > On these urls I can't find actual file to download, or I'm blind (or > > don't understand how this site 'works'). > > Whatever I click I get new url and not binary file to download. > > Ack, I forgot Gitiles is not super friendly for downloading binaries directly: > > https://github.com/google/gitiles/issues/106 > > > Could you give url for binary file that I could download, please? > > This should do it: > > curl https://chromium.googlesource.com/chromiumos/third_party/marvell/+/HEAD/sd8797_uapsta.bin?format=TEXT > | base64 -d > sd8797_uapsta.bin This works, thanks. With this firmware it crashed after 8 hours, and I rebooted machine to see how long it will work on second try. > Or some similar invocation if you have to use the browser (click on > the "txt" link, then base64-decode the result). > > > > > kernel is mainline 5.14.4 without patches, but I recall that I noticed > > > > this crashes on older ones but can't remember exact version. > > > > > > Did it ever work well? I'm curious if this was a kernel regression, or > > > perhaps just a long-standing firmware issue. > > > > Yes, it worked for few years but started to crash about few months ago > > and that happened when I upgraded complete root filesystem, so it could > > be related to upgraded firmware. Thank you for hint what to try to test. > > Could be. It does look like mainline linux-firmware got an update for > this file in 2019, so it's possible your distro (or whatever provides > your rootfs) only semi-recently got the update. I use linux-firmware-mrvl-20210919 release but this also happened with some earlier versions released this year. I use Alpine linux (https://alpinelinux.org/, I'm alpine linux developer and maintainer of latest stable kernels on it). In meantime I found that Arch linux for ARM (alarm) have older firmware for peach chromebook here (probably copied from chromeos): https://archlinuxarm.org/builder/src/sd8787_uapsta_cros.bin https://archlinuxarm.org/builder/src/sd8797_uapsta_cros.bin https://archlinuxarm.org/builder/src/sd8897_uapsta_cros.bin They even have patched kernel for this here: https://archlinuxarm.org/packages/armv7h/linux-peach/files/0002-use-chromiumos-mwifiex-drivers.patch but this is for old 3.8.11 kernel. I will try with them and see how it would work. Also I will try to find if I have old root FS which worked few years on it (if I have it archived somewhere). Also, I will report back results. Kind regards > Brian
