[OLPC-devel] Build image 76.
mtosatti at redhat.com
Thu Aug 24 14:51:01 EDT 2006
On Thu, Aug 24, 2006 at 02:31:23PM -0400, Jim Gettys wrote:
> Interesting. I'm glad we now know what was going on.
> In theory, I would think the device driver should have responsibility
> for enabling the power on devices; in Linux has knowledge of the bus
Not really - in this case its responsability of the BIOS to power up the
Richard, Ronald, please fixup LinuxBIOS to enable the WLAN_EC pin.
> - Jim
> On Thu, 2006-08-24 at 13:27 -0500, Richard Smith wrote:
> > > > No, but the libertas driver doesn't seem to send anything to dmesg under
> > > > Insyde either, so that doesn't help. The device is missing from lsusb
> > > > and /proc/bus/usb/devices; it's "Bus 001 Device 004: ID 1286:2001" when
> > > > booted in Insyde, and that line doesn't appear inside LB. I've checked
> > > > that ehci/uhci are both loaded.
> > > >
> > > > - Chris.
> > > I wonder if this is some magic being done by our friend the VSA ...
> > Nope looks to me to be a simple enable pin. The EC has a singnal
> > marked WLAN_EN that appears to control the 3.3V to the marvel chip.
> > Its hooked up to GPIO18 on the EC. So enable that output and wireless
> > should come back.
> > Should linuxbios do this or leave it up to a userspace program?
> Jim Gettys
> One Laptop Per Child
> Devel mailing list
> Devel at laptop.org
More information about the Devel