Messages in this thread | | | Date | Fri, 2 Jun 2017 15:45:26 -0700 | From | Stephen Boyd <> | Subject | Re: [PATCH v4 2/2] clk: bcm2835: Minimise clock jitter for PCM clock |
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On 06/01, Phil Elwell wrote: > Fractional clock dividers generate accurate average frequencies but > with jitter, particularly when the integer divisor is small. > > Introduce a new metric of clock accuracy to penalise clocks with a good > average but worse jitter compared to clocks with an average which is no > better but with lower jitter. The metric is the ideal rate minus the > worse deviation from that ideal using the nearest integer divisors. > > Use this metric for parent selection for clocks requiring low jitter > (currently just PCM). > > Signed-off-by: Phil Elwell <phil@raspberrypi.org> > Reviewed-by: Eric Anholt <eric@anholt.net> > Acked-by: Stefan Wahren <stefan.wahren@i2se.com> > ---
Applied to clk-next
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