> Phil Elwell <[email protected]> hat am 1. Juni 2017 um 11:10 geschrieben: > > > The switch to using the upstream bcm2835_cprman clock driver caused a > few problems for users of PCM (I2S) peripherals. Audio applications > require accurate, stable clocks, and the cprman driver wasn't > conservative enough in its choice of clock sources. > > These patches restrict the clock sources for the PCM peripheral in two > ways: the first causes all possible sources except OSC and PLLD_PER > to be ignored, while the second allows clocks to be specified as > "low_jitter", causing the effects of fractional divisors to be taken > into account when comparing potential clocks for accuracy. In practice, > the combined effect of the two patches is to choose OSC as a source if > an integer divisor can be used, otherwise PLLD_PER is chosen. > > Changes in v3: > * Elimination of temporary variable from patch 2.
Acked-by: Stefan Wahren <[email protected]> still applies to the complete series
