[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Felix Fietkau <nbd@openwrt.org>]

On 2012-01-24 11:47 AM, Daniel Halperin wrote:
> Please don't top-post.
> 
> On Tue, Jan 24, 2012 at 12:31 AM, le thanh son <ltson36@yahoo.com> wrote:
>> Sorry for my late writing, since I have just read the following:
>>
>>>The newer
>>>family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz
>>> channels
>>>either in harware or software. So it is fair to say ath9k will not support
>>>5 MHz / 10 MHz channels.
>>
>> I am sure that I have been using for long time the family AR9280 chipset and
>> of course I can use 5/10 MHz bandwidth modes.
>>
>> But the driver needs to use HAL (not ATH9k) from Atheros.
>>
>> To my understanding, at least AR9280 supports 5/10Mhz BW.
> 
> It is true, at least some of the AR9xxx chipsets suport 5/10 MHz
> bandwidths. See, for instance,
> http://www.qca.qualcomm.com/technology/technology.php?nav1=47&product=90.
> 
> Getting support for this in Linux has to be pretty low on QualAth's
> list, though.
Most of the core driver support is in ath9k already, but there's no way
to enable it with the upstream driver yet. OpenWrt has patches to
support that, but since the functionality not integrated with mac80211 I
decided to not submit them upstream yet.

- Felix