Hello Laurent, On Mon, Oct 13, 2008 at 11:56 AM, Laurent Pinchart <[EMAIL PROTECTED]> wrote: > our hardware engineer asked me to make sure all unused GPIO pins are > configured as outputs to avoid floating inputs. He got theory on his side > (floating inputs can lead to higher current consumption, metastability or > even permanent damage), but I'd like to ask the list for practical feedback. > Ideally, configure them as inputs or tri-state (both mean high impedance), and do use pull-down or -up resistors.
Now, the answer might be different when your pins are not connected. Check on the processor if internal pull resistors are present. If so, use as input. If not, then your h/w engineer *may* have a point, not sure on that though. Regards, -- Leon _______________________________________________ Linuxppc-dev mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-dev
