USB Host Mode for Wifi Card - help!

Andy Green andy at openmoko.com
Sun Jul 20 20:42:09 CEST 2008


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Somebody in the thread at some point said:

| When I boot the Neo, I execute the command: echo 1 >
| /sys/devices/platform/neo-1973-pm-host.0/hostmode
|
| Once I run the above command viola – my powered USB comes to life
| (although there is also a light that comes on to inform me that the
| Freerunner is charging it... Which seems to somewhat defeat the purpose
| of a powered USB hub a little :>/

There are two parts to host mode on Freerunner, logical and power.  You
have found the power one which enables 5V @ 500mA out of the USB socket
(so you don't need a battery hub).

What you're missing is the bit that sets logical host mode in the USB
peripheral in the CPU:

~ echo host > /sys/devices/platform/s3c2410-ohci/usb_mode

This makes it "do the host thing" down the USB socket and enumerate your
WLAN device, etc.

- -Andy
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