status of libertas_tf + sdio?

[Vasily Khoruzhick]

On Tue, Dec 10, 2013 at 5:27 AM, James Cameron <quozl at laptop.org> wrote:
> On Mon, Dec 09, 2013 at 12:38:28PM +0300, Vasily Khoruzhick wrote:
>> On Mon, Dec 9, 2013 at 7:18 AM, James Cameron <quozl at laptop.org> wrote:
>> > On Fri, Dec 06, 2013 at 01:40:00PM +0300, Vasily Khoruzhick wrote:
>> >> Out of curiosity,
>> >>
>> >> Does anyone know if it's possible to get thin firmware for 8686 with
>> >> SPI interface?
>> >
>> > What happens when you try?
>>
>> How? There's no tf available for 8686 with SPI interface.
>
> How do you know that?  Are you saying that SPI support was removed
> from firmware during the conversion from fat to thin?

Err, there's no lbtf_spi.bin file.

>> > How are you downloading firmware over SPI?
>>
>> See drivers/net/wireless/libertas/if_spi.c, but it's for fat
>> firmware
>
> What happens if you send the thin firmware instead?

I have no thin firmware for 8686 with SPI interface

>> > I'm not aware of a second stage firmware download helper specific to
>> > the SPI mode.
>>
>> What's a second stage firmware download helper?
>
> File sd8686_helper.bin, we use it in Open Firmware with SDIO 8686 on
> OLPC XO.
>
> For SPI, which we don't use, I see if_spi.c uses gspi8686_v9_helper.bin
>
> I was wrong; I am now aware of a second stage firmware downloader
> helper specific to the SPI mode.  I hadn't looked before.
>
>> > I think it is not possible without firmware engineering.
>>
>> Yeah, just hoped that Marvell already did it. It's a pity that
>> firmware source code isn't available :(
>
> Cozybit did the thin firmware, if I recall correctly.

Do you think it makes sense to contact them?

Regards
Vasily

>
> --
> James Cameron
> http://quozl.linux.org.au/