Re: [Trac #1475] CAFÉ camera doesn't power down
Zarro Boogs per Child
bugtracker at laptop.org
Mon May 14 15:17:41 EDT 2007
#1475: CAFÉ camera doesn't power down
---------------------+------------------------------------------------------
Reporter: dwmw2 | Owner: corbet
Type: defect | Status: assigned
Priority: high | Milestone: BTest-4
Component: kernel | Version: Build 406
Resolution: | Keywords:
---------------------+------------------------------------------------------
Comment (by wmb at firmworks.com):
The "General Purpose I/O Register" at offset 0x315c controls the
directions of the GPIO pins. Setting a GPIO bit to input mode will
prevent it from driving the output actively high, and the signal will
eventually float low.
It is better to leave the bit set for output mode, and use register 3038
to drive it actively low (value 0) or actively high (value 8).
--
Ticket URL: <http://dev.laptop.org/ticket/1475#comment:5>
One Laptop Per Child <http://laptop.org/>
More information about the Bugs
mailing list