2009/8/4 shashi raj singh <singh_shashi...@yahoo.com>:
>
> Hi
>
> I am working on a project that involves frequent channel change. what is the 
> fastest way to change channel. ath5k_hw_reset does lot of other stuff. is 
> ath5k_hw_channel function sufficient for channel change?
>

Not if PHY is running (reset sets the channel after phy reset +
rfbuffer setup), there is a way to do a synth-only channel change
using an access method to rf registers (rfbus grant)  but it's not
implemented yet on ath5k (+ it's only for post-AR5413 chips + it
doesn't always work so you have to fallback to a full reset)...

> for tx side i set the txpower tables for the channel before changing channel. 
> I found this helps in improving successful transmission.
>

Interesting, how does it help on improving successful transmission ?
What did you measure ?

> any suggestion would be a great help
> Thanks!!

For now use ath5k_hw_reset, i'm working on introducing some small
init/reset functions for phy and pcu and maybe implement synth-only
channel change but it wont happen anytime soon (after September). You
can do it yourself if you want, check out Sam's HAL or Legacy HAL
(from Atheros).

-- 
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick
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