Tx power setting

Tx power setting

[Okhwan Lee]

Hi, 

We are trying to change the tx power of QCA 9880.  
We use 3.16.1 linux kernel and backport (3.16.1) to use the emerging ath10k device driver and 10.1.467.2-1 firmware. 

However, we can not change the tx power setting (default 0 dBm) by using iw or iwconfig commands. 
Based on my understanding, if we change the tx power using the commands, ath10k_config() function should be invoked. 
However, the function is not called. 
And the received signal strength at the receiver side does not change. 

If you have any idea, please let me know. 

Thank you.

--  
Okhwan Lee
Sent with Airmail

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: Tx power setting

[Michal Kazior]

On 5 November 2014 09:41, Okhwan Lee <ohlee@mwnl.snu.ac.kr> wrote:
> Hi,
>
> We are trying to change the tx power of QCA 9880.
> We use 3.16.1 linux kernel and backport (3.16.1) to use the emerging ath10k device driver and 10.1.467.2-1 firmware.
>
> However, we can not change the tx power setting (default 0 dBm) by using iw or iwconfig commands.

What do you mean "can not change". Do you get an error message? Where
does it say you have 0 dBm as the default?


> Based on my understanding, if we change the tx power using the commands, ath10k_config() function should be invoked.
> However, the function is not called.
> And the received signal strength at the receiver side does not change.
>
> If you have any idea, please let me know.

I'm using fbb5c042800ec42459a5cc307dec566d8e316927 from
github.com/kvalo/ath/ (based on 3.17). I don't see the problem you
describe - I can change tx powed with, e.g. `iw wlan1 set txpower
fixed 1000`. The other end reports different signal strength values
when I change txpower. Can you re-test with latest ath10k code,
please?


Michał

_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k

Re: Tx power setting

[Okhwan Lee]

 
Hi all, 

Thank you for the answer. 
As you said, if we use the most recent version of ath10k, it works correctly. 

--  
Okhwan Lee
Sent with Airmail  

켜짐 2014년 11월 5일 에서 오후 10:54:55, Michal Kazior (michal.kazior@tieto.com(mailto:michal.kazior@tieto.com)) 작성됨:

> On 5 November 2014 09:41, Okhwan Lee wrote:
> > Hi,
> >
> > We are trying to change the tx power of QCA 9880.
> > We use 3.16.1 linux kernel and backport (3.16.1) to use the emerging ath10k device driver and 10.1.467.2-1 firmware.
> >
> > However, we can not change the tx power setting (default 0 dBm) by using iw or iwconfig commands.
>  
> What do you mean "can not change". Do you get an error message? Where
> does it say you have 0 dBm as the default?
>  
>  
> > Based on my understanding, if we change the tx power using the commands, ath10k_config() function should be invoked.
> > However, the function is not called.
> > And the received signal strength at the receiver side does not change.
> >
> > If you have any idea, please let me know.
>  
> I'm using fbb5c042800ec42459a5cc307dec566d8e316927 from
> github.com/kvalo/ath/ (based on 3.17). I don't see the problem you
> describe - I can change tx powed with, e.g. `iw wlan1 set txpower
> fixed 1000`. The other end reports different signal strength values
> when I change txpower. Can you re-test with latest ath10k code,
> please?
>  
>  
> Michał


_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k