Re: Status of wireless driver development for Raspberry Pi?

From: Ronald Klop <>
Date: Wed, 02 Jun 2021 18:47:07 UTC
On 5/31/21 10:43 PM, John F Carr wrote:
> According to a page that hasn't been updated for a while ( work is in progress on Broadcom wireless drivers for the Raspberry Pi 3 and 4.  I'm supposed to start by building the GENERIC-MMCCAM kernel.  A CAM device will then appear which I can then use camcontrol to talk to.  I built the kernel and booted it on my Pi 3B+, which has a  Broadcom 43455/6 according to Linux.   All camcontrol finds is the mini SD card. I see only one call to sdhci_init_slot in bcm2835_sdhost.c so maybe that's the problem.  It supports exactly one SDIO device, a memory card.
> Any thoughts?  Is it worth thinking about the wireless chip or is it just too much work?
> # camcontrol devlist
> <SDHC SC16G 8.0 SN 54B43C20 MFG 08/2018 >  at scbus0 target 0 lun 0 (pass0,sdda0)
> # camcontrol devlist -v
> scbus0 on sdhci_slot0 bus 0:
> <SDHC SC16G 8.0 SN 54B43C20 MFG 08/2018 >  at scbus0 target 0 lun 0 (pass0,sdda0)
> scbus-1 on xpt0 bus 0:
> <>                                 at scbus-1 target -1 lun ffffffff (xpt0)

As you got no answer from somebody who knows more about this than I do I will try to give some pointers.

Here you can search through the history of the mailinglist.
Look for WiFi/SDIO/RPI kind of subjects.

The latest I found about this subject:

I don't know anything about the current state. But a USB-WiFi dongle might be a reasonable shortcut.

I'll cc the Bjoern from this e-mail. @bjoern: do you have a status update?