ARM, SDIO over SPI & 88W8686 firmware loading issue

[Mielimonka Arthur]

Hi Julien,


I just wanted to do some similar work (I wanted to connect an ARM7TDMI
LPC2468 board with the Marvell 8686) when I read your post at this
mailing list. 

Would you explain how you accessed the WLAN adapter? I assume you
exchanged the if_sdio interface by an if_spi interface and replaced the
sdio_readb and sido_writesb functions by similar spi_read & _write
functions?

Did you also plan to integrate an interrupt service? If yes, how?

If you don't mind it would be nice if you would send me your code?

Regards,
Arthur


> Hi !
>
> I was just trying some cool stuffs of the new 2.6.24 Linux kernel on
my
> ARM9 platform, ie 8686 SDIO & SDIO over SPI drivers, but I have some
> problem at firmware loading stage.
>
> I have a 8686 Marvell chip connected to the SPI port of my ARM9
platform
> and try to use the libertas_sdio driver. The 8686 is correctly set in
> SPI mode, correctly detected by SDIO stack and helper image seems to
be
> correctly loaded (I can see all the CMD53 being sent). The problem
> occurs when loading the first block of the "real" firmware.
> Corresponding CMD53 fails with a strange R5 response: 0xF5. If think
> "helper" is ok because the driver can read the requested transfer size
> (16 bytes) from IF_SDIO_RD_BASE.
>
> The firmware images I use are the one from Marvell website and are
> working if I use them with a 8686 SDIO card on my x86 laptop (with a
> Ricoh SDHCI).
>
> Do someone have an idea about my firmare loading problem ?
> Are there some open datasheets available for that chip ?
>
> Thanks !
>
> Regards,
> Julien
>