27 Jul
2011
27 Jul
'11
3:18 p.m.
On Mon, Jul 04, 2011 at 10:13:56AM +0900, Sangbeom Kim wrote:
Is there any checking method for locking FLL? (ex. Checking register bit for FLL lock)
There is an interrupt which I've got a patch to use (it's in need of a bit more testing so not yet published). You can also poll the status bits but on a lot of systems that works out as being too expensive due to I/O costs.
Just using msleep looks not enough to ensure FLL lock.
Practically speaking it's fine; the FLL lock time is specified performance characteristic of the device. If we can't lock when we expect to then the system is in trouble and it's not clear what we can do about usefully.