Wilink8 driver support for IMX6Q kernel 3.18 with device tree

Vijai Kumar

Hi All,

We are having a custom board based on IMX6Q sabresd with W18xx based WIFI+BT module connected to sdio lines. I see that the wilink drivers available in 3.18 kernel are not device tree compatible. I applied patches from AM335x wilink kernel driver it to make the driver device tree compatible. Added entry in device tree. The compatible string in dt matches with the one in driver. However the probe function fails to get called.

Can anyone clarify me why the same driver with same patch works in AM335x kernel with dt support but not in IMX kernel. It would be great if anyone could briefly explain me regarding the compat-wireless stuff.

over 10 years ago

0 Joseph Gigi over 10 years ago

TI__Guru* 85400 points

Hi Vijai,

The wl18xx drivers are not part of the Linux kernel. You need to generate the kos separately.

The latest wl18xx release is R8.5. The release is available at: www.ti.com/.../wilink-sw . Please also check the R8.5 release notes page. It has information on how to build for a specific kernel. But please note that the latest kernel version that is tested with that release is 3.12. So you might want to modify it to make it work for 3.18.

Regards,
Gigi Joseph.

0 Vijai Kumar over 10 years ago in reply to Joseph Gigi

Prodigy 230 points

Thanks for the Info Gigi.
I dont understand the point of "wl18xx drivers are not part of the Linux kernel". I can see that for sure in drivers/net/wireless/ti/ in my 3.18 kernel device tree. Is there a way to build the drivers as a part of linux kernel build instead of using these scripts? What if i want the drivers to be built in to the kernel instead of being modules?

0 Joseph Gigi over 10 years ago in reply to Vijai Kumar

TI__Guru* 85400 points

Hi Vijai,

Yes, "/drivers/net/wireless/ti" does have the wl18xx source, but its very old.
Currently there is no other way but to use the compat-wireless build.

Regards,
GIgi Joseph.

0 Vijai Kumar over 10 years ago in reply to Joseph Gigi

Prodigy 230 points

Thanks GIgi :)

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Wilink8 driver support for IMX6Q kernel 3.18 with device tree