Hey Arend On Wed, 15 Mar 2023 at 09:33, Arend Van Spriel <arend.vanspriel@xxxxxxxxxxxx> wrote: > > On March 15, 2023 8:58:43 AM Michael Stapelberg > <michael+lkml@xxxxxxxxxxxxx> wrote: > > > Hey Arend > > > > Thanks for taking a look. > > > > The brcmfmac-wcc module is present on my installation, but I’m not > > currently loading it. > > (I only load brcmutil, then brcmfmac.) > > > > But, even if I load it, the wlan0 interface still doesn’t show up. > > > > In the modules.dep, I see that brcmfmac-wcc should be loaded after > > brcmutil and brcmfmac. > > Is that accurate? > > Yes. Actually brcmfmac loads brcmfmac-wcc by itself. Hmm, when I run lsmod after booting, I don’t see it: /tmp/breakglass1452371198 # lsmod hci_uart 61440 0 - Live 0xffffba314a2cd000 btbcm 24576 1 hci_uart, Live 0xffffba314a2c6000 bluetooth 786432 3 hci_uart,btbcm, Live 0xffffba314a205000 brcmfmac 258048 0 - Live 0xffffba314a1c5000 brcmutil 20480 1 brcmfmac, Live 0xffffba314a1bf000 ecdh_generic 16384 1 bluetooth, Live 0xffffba314a1ba000 ecc 36864 1 ecdh_generic, Live 0xffffba314a1b0000 /tmp/breakglass1452371198 # How does the “load by itself” mechanism work? Maybe I’m missing a userspace component for it. Thanks > > > > My installation is somewhat unusual in that I use a custom userland > > (see https://gokrazy.org/). > > Bit tricky choice of name :-p I will check it out. > > Regards, > Arend > > > > > Thanks > > Best regards > > Michael > > > > > > On Wed, 15 Mar 2023 at 00:21, Arend Van Spriel > > <arend.vanspriel@xxxxxxxxxxxx> wrote: > >> > >> On March 14, 2023 11:49:05 PM Michael Stapelberg > >> <michael+lkml@xxxxxxxxxxxxx> wrote: > >> > >>> Of course, find it attached. Thanks. > >> > >> Strange. Could it be there is some build config needed to install the > >> additional kernel modules (brcmfmac-wcc.ko, etc.) on RPi image? > >> > >> Regards, > >> Arend > >> > >>> > >>> On Tue, 14 Mar 2023 at 23:26, Arend Van Spriel > >>> <arend.vanspriel@xxxxxxxxxxxx> wrote: > >>>> > >>>> On March 14, 2023 8:39:05 PM Michael Stapelberg > >>>> <michael+lkml@xxxxxxxxxxxxx> wrote: > >>>> > >>>>> Hey Arend > >>>>> > >>>>> I recently bisected a user-reported WiFi breakage on the Raspberry Pi > >>>>> 3B+ to your commit > >>>>> https://github.com/torvalds/linux/commit/d6a5c562214f26e442c8ec3ff1e28e16675d1bcf > >>>>> https://lore.kernel.org/r/20221129135446.151065-4-arend.vanspriel@xxxxxxxxxxxx > >>>>> > >>>>> On our end, the issue was reported here: > >>>>> https://github.com/gokrazy/wifi/issues/3 > >>>>> > >>>>> As of Linux 6.2.6, this seems to still be unfixed, so I wanted to > >>>>> check in and see if you could take a look please? > >>>> > >>>> I have a suspicion, but can you provide the kernel .config file so I can > >>>> see if I am on the right track. > >>>> > >>>>> + brcmfmac: brcmf_fwvid_request_module: mod=wcc: failed -2 > >>>>> + ieee80211 phy0: brcmf_attach: brcmf_fwvid_attach failed > >>>>> + brcmfmac: brcmf_sdio_firmware_callback: brcmf_attach failed > >>>> > >>>> Regards, > >>>> Arend > > >
