[yocto] How to add support for "usb WIFI dongle"?

[Alan Martinovic]

I can't confirm, but it just might be that "ipw2x00" is actually a firmware.
(Haven't seen a firware specified explicetly in the menu config before).

Ref: https://wiki.debian.org/brcm80211

I recently had a question that might share some light on the firmware
- driver relation:
 (given that it really is firmware you check in the menuconfig)

https://electronics.stackexchange.com/questions/342118/design-decision-for-dynamic-firmware-loading


On Tue, Nov 28, 2017 at 4:00 PM, Jerry Lian <jerry.lian at gmail.com> wrote:
> Thanks Alan, I follow your instruction and it works eventually!
>
> But I got another question:
>
> I am using official Raspberry-PI WIFI dongle (BCM43143)
> I configure kernel so that driver "brcm80211" is enabled, however, WIFI is
> not working.
> Then I add driver "ipw2x00", then WIFI works.
> So my question, why do we need both "ipw2x00" and "brcm80211" for official
> Raspberry-PI WIFI dongle?
> (Sometimes the WIFI dongle works if I add drivers: "brcm80211, iwlwifi,
> rt2x00", without "ipw2x00", so I am really confused!)
>
> Thanks!
>
>
>
>
>
>
>
> On Tue, Nov 21, 2017 at 12:04 PM, Alan Martinovic
> <alan.martinovic at senic.com> wrote:
>>
>> Some hints on where to start at:
>>
>> > What should I do to add support for "usb WIFI dongle"
>>
>> Am guessing the dongle works with Raspbian or id gets detected
>> once you plug it into a desktop Linux machine.
>> Once you do that type:
>>
>>     dmesg
>>
>> And it will list the kernel modules related to your dongle.
>> You can use those buzzwords to google for what does
>> enabling the dongle actually translates to in terms of kernel config.
>>
>> After that (depending what linux you're using) figure out how to
>> run menuconfig. It might be something like:
>>
>>     bitbake your-kernel-package-name -c menuconfig
>>
>> and try checking out the boxes that you found out
>> might be relevant to your wifi dongle.
>> Save it, build the image, and see if it got you somewhere.
>>
>>
>>
>>
>>
>>
>>
>> On Tue, Nov 21, 2017 at 5:32 PM, Jerry Lian <jerry.lian at gmail.com> wrote:
>> > I am confused on adding support for "usb WIFI dongle":
>> > * My boards do NOT have WIFI capability, so I will add a "usb WIFI
>> > dongle".
>> >   (I have two boards: Raspberri-PI-2, SIMATIC IOT-2020)
>> > * Suppose we start from "core-image-sato"
>> > * What should I do to add support for "usb WIFI dongle"
>> > * After we build/boot the image, how can we verify and bring the WIFI
>> > up?
>> >
>> > Thanks!
>> > Jerry
>> >
>> > --
>> > _______________________________________________
>> > yocto mailing list
>> > yocto at yoctoproject.org
>> > https://lists.yoctoproject.org/listinfo/yocto
>> >
>
>