On 4-1-2017 15:53, Rafał Miłecki wrote: > On 4 January 2017 at 15:32, Kalle Valo <kv...@codeaurora.org> wrote: >> Rafał Miłecki <zaj...@gmail.com> writes: >> >>> On 3 January 2017 at 20:55, Rob Herring <r...@kernel.org> wrote: >>>> On Wed, Dec 28, 2016 at 04:59:54PM +0100, Rafał Miłecki wrote: >>>>> From: Rafał Miłecki <ra...@milecki.pl> >>>>> >>>>> 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
