brcmfmac: BCM43431 won't get probed on Raspberry Pi Zero W

[Stefan Wahren]

Hi,

> Franky Lin <franky.lin at broadcom.com> hat am 17. Juli 2017 um 21:50 geschrieben:
> 
> 
> On Mon, Jul 17, 2017 at 6:10 AM, Stefan Wahren <stefan.wahren at i2se.com> wrote:
> > Hi,
> >
> >> Stefan Wahren <stefan.wahren at i2se.com> hat am 28. Juni 2017 um 21:33 geschrieben:
> >>
> >>
> >> Hi,
> >>
> >> i'm currently working on Raspberry Pi Zero W for Mainline. Here is my first patch series [1].
> >>
> >> Unfortunately i didn't get brcmfmac (connected via SDIO) probed with this patch series against 4.12.0-rc5-next-20170616+
> >>
> >> [    8.389167] brcmfmac: F1 signature read @0x18000000=0x1541a9a6
> >> [    8.735111] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: May 27 2016 00:13:38 version 7.45.41.26 (r640327) FWID 01-df77e4a7
> >> [    8.786016] brcmfmac: brcmf_sdio_hostmail: Unknown mailbox data content: 0x40012
> >> [   11.288798] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   11.292822] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   13.848777] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   13.852974] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   16.408762] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   16.413004] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   18.968769] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   18.972965] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   21.528743] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   21.532924] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   24.088745] brcmfmac: brcmf_sdio_bus_rxctl: resumed on timeout
> >> [   24.092948] brcmfmac: brcmf_sdio_checkdied: firmware trap in dongle
> >> [   26.648764] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
> >> [   26.648789] brcmfmac: brcmf_cfg80211_attach: Failed to get D11 version (-110)
> >> [   26.648831] brcmfmac: brcmf_bus_started: failed: -12
> >> [   26.648842] brcmfmac: brcmf_sdio_firmware_callback: dongle is not responding
> >>
> >> I already tried the additional patches from Gerd Hofmann's repo [2], but this didn't improve anything.
> >>
> >> Any ideas what could be the problem?
> >
> > i found out that 4.12 didn't have the problem and rebased my changes [3].
> >
> > Now 4.13-rc1 is out and i bisected the regression:
> >
> > 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 bad
> > 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c good
> > e5f76a2e0e84ca2a215ecbf6feae88780d055c56 bad
> > 1849f800fba32cd5a0b647f824f11426b85310d8 good
> > ca7bbc845e0aa2d9d6d252e72f0a2602ebd16361 bad
> > 0c90e9c6b5549825e410b6589ad6c4478f81ebad good
> > 44e179da0e27a1cc1001becefa0931634dbafae3 bad
> > 219569ad0c41df7a7f999a2cad688c6b6ce173e2 bad
> > fb53905cf2c3db6eb1ce37a37c5002456fa7ee20 bad
> > 37a5be0cfca6487bbdf423a09dfe70e9bfb049db bad
> > a3b2ba8666b7947eb323368b5c6f751450e61766 bad
> > 21f569af9ab3608382482166ae9aba802b097e3f bad
> > 94ed6ffb7965aa09409a5ff7d17b2f84ed085c3c bad
> > a95cfad947d5f40cfbf9ad3019575aac1d8ac7a6 good
> >
> > 9fe929aaace6a3019dd64a70063cc7b0bb956a4e bad
> >
> > brcmfmac: add firmware feature detection for gscan feature
> > Detect gscan support in firmware by doing pfn_gscan_cfg iovar with
> > invalid version.
> >
> > Unfortunately this commit cannot be simply reverted and i wasn't sure about the dependencies. So i need to revert the following commits to get it running with 4.13-rc1:
> >
> 
> Can you please try to comment out the following lines in
> brcmf_feat_attach? That's the only suspicious line that interact with
> firmware in the patch.
> 
> + brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, "pfn_gscan_cfg",
> +                                            &gscan_cfg, sizeof(gscan_cfg));

after commenting out this line, the issue doesn't appear.

> 
> I don't have a pi zero w but will try to see if I can reproduce it on a pi 3.

Unfortunately the Pi 3 doesn't have out of the box Wifi support in Mainline. Gerd Hoffmann currently maintains some patches for Wifi support [2]. But they aren't against 4.13-rc1. I could prepare a branch against 4.13-rc1.

> 
> Regards,
> Franky
> 
> > 123fef3fd4ae6052bad5cf1623c49845d16a6c67
> > 2526ff21aa77c205f72e8263335f20b7d7e636fc
> > b8a64f0e96c2b258321ee03975aeb0f5e88a055b
> > 69897f390b006948ca4cfa37174fa653a0ef7223
> > 42596f761449595e3f0f18ce57c88472ad2d6160
> > efc2c1fa8e145b60a7805fa9b6c92ac0746fccc3
> > 94ed6ffb7965aa09409a5ff7d17b2f84ed085c3c
> > 9fe929aaace6a3019dd64a70063cc7b0bb956a4e
> >
> > Would be nice to get this fixed.
> >
> > Regards
> > Stefan
> >
> > [3] - https://github.com/lategoodbye/rpi-zero/commits/rpi-zero-w-v2
> >
> >>
> >> Thanks
> >> Stefan
> >>
> >> [1] - http://lists.infradead.org/pipermail/linux-rpi-kernel/2017-June/006598.html
> >> [2] - https://www.kraxel.org/cgit/linux/log/?h=bcm2837