Re: [PATCH 1/2] dt-bindings: document common IEEE 802.11 frequency properties

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On 4-1-2017 15:53, Rafał Miłecki wrote:
> On 4 January 2017 at 15:32, Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote:
>> Rafał Miłecki <zajec5@xxxxxxxxx> writes:
>>
>>> On 3 January 2017 at 20:55, Rob Herring <robh@xxxxxxxxxx> wrote:
>>>> On Wed, Dec 28, 2016 at 04:59:54PM +0100, Rafał Miłecki wrote:
>>>>> From: Rafał Miłecki <rafal@xxxxxxxxxx>
>>>>>
>>>>> This new file should be used for properties handled at higher level and
>>>>> so usable with all drivers.
>>>>
>>>> Why is this needed? Where would this data normally come from?
>>>
>>> Vendors limit choice of channels at their web user interface level. I
>>> want to do better and report proper channels directly at kernel level
>>> instead of masking them in every possible configuration tool.
>>
>> Why do vendors limit the channels? Is it because of a hardware
>> limitation (antenna does not support, or not calibrated, for a certain
>> band etc) or something else?
> 
> Please review & comment on the latest version, currently V5:
> https://patchwork.kernel.org/patch/9495795/
> "This can be used to specify extra hardware limitations caused by e.g.
> used antennas or power amplifiers."

Just to be clear, it is does not need to be a hardware limitation, but
simply a way to assure that multiple wlan radios are not interfering
with each other and crank up the total bandwidth that vendors can put on
their box.

Regards,
Arend
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