omap3 usb platform and other

Vasily Sartakov sartakov at
Fri Oct 21 11:44:12 CEST 2011

I would like to discuss with you platforms supported in l4linux.
l4linux good working on "vanilla" arm platform, but when we try to use
a board specific devices - for example USB, we have some problem with
full device support in sources. For example, USB gadget need musb,
witch need twl4030, which need i2c, which need clock and power domain
initialisation, and all of this part placed in arch/arm/omap.
In next mail attachment you can find the our kernel, which support usb
on Overo Gumstix platform. We copied sources from arch/arm/omap to
arch/l4/kernel/arch-arm/ and made it work. Most of them serious
changed, but we tried to save structure.
I don't thing what its good solution, but it real working and someone
who ask USB support on arm can use it.
So, what you think about full board/platform supporting? any idea?
Can this solution may be pushed to SVN?
I understand that this code should be more clear, and I think it would
be better if he would be on the Internet. Incidentally, this is the
second version, we have previously done this for kernel 2.6.xx, and it
is very difficult to keep a local copy and make regular merge.
The other thing which i would like discuss is configuration management
for l4re build. With a time, count of a package will be increased,
and, like now, the compiling of l4re take a long time. Do you plan in
this direction some work? For example, you could make small
configuration files for compiling only requirements, similar to

Sartakov A. Vasily

More information about the l4-hackers mailing list