sd8688 firmware location

Dan Williams dcbw at
Wed Jan 9 17:45:04 EST 2013

On Wed, 2013-01-09 at 00:56 +0100, Lubomir Rintel wrote:
> Hi!
> btmrvl_sdio and libertas_sdio both use firmware files sd8688.bin and
> sd8688_helper.bin. In linux-firmware, they're present in libertas/ tree and
> (since 3d32a58b) libertas_sdio perfers loading it from there, while it is able
> to fallback to load it from linux-firmware root. btmrvl_sdio, on the other hand
> only looks in the root and ends up not being successful.
> Obviously, there are two solutions to the problem -- either teach btmrvl_sdio
> to look into libertas/, or move the files in linux-firmware tree. I don't
> really have a strong preference, though it probably makes less sense to keep in
> in libertas/, since the bluetooth hardware is not really marketed as "Libertas."
> I'm following up with patches to linux and linux-firmware and I'd be very
> thankful if you could pick one (not both of them).

So the BT part and the wifi part have different SDIO IDs; are they
actually connected separately to the SDIO bus?  Or is the chip only in
one mode at one time or something like that?  Is there a problem with
having both libertas and btmrvl loaded at the same time since they're
essentially the same chip?

I don't really mind moving stuff to mrvl/ out of libertas/ for these
devices, but I do want some backwards compat code in libertas for that.
Unless, of course, Marcel was talking about symlinks in the
linux-firmware git tree, which would be fine with me.  The important
point is that simply updating your linux-firmware package or install or
whatever *should not* result in a failed firmware load.


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