On 2018-11-15 16:29, Peter Ujfalusi wrote: >> Sometimes, there is a scratchy tenth of a second (in handsfree and headset), > > If you set CONFIG_CPU_IDLE=n, do you still have the scratchy sound? Or > with 4.19 kernel if you can cross check it? If it is not there w/o CPU_IDLE then can you try one thing: print out the latency usec the patch is calculating and, by guess divide it by 10 and pass that to pm_qos API. My calculation of the usec is not correct or I'm calculating it in a wrong way? - Péter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki