[PATCH] clk: tegra: PLLE spread spectrum control

Stephen Warren swarren at wwwdotorg.org
Thu Oct 3 11:23:55 EDT 2013


On 10/03/2013 04:52 AM, Peter De Schrijver wrote:
> On Tue, Oct 01, 2013 at 09:56:26PM +0200, Stephen Warren wrote:
>> On 09/26/2013 09:34 AM, Peter De Schrijver wrote:
>>> Add spread spectrum control for PLLE in Tegra114.
>>
>> It would be useful to have some description of the end-user-visible
>> benefit of this change; why is it useful?
> 
> spread spectrum clocking is a technique to reduce EMI caused by the clock
> signal by modulating the frequency with a low frequency signal. This should
> reduce interference with eg. Wifi or cellular modems on the same board.

Great. The intent of my request was for that information to be included
in the patch description.




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