On 01/18/2015 02:01 PM, Pavel Machek wrote: > Hi! > > If you have any idea about playback problems, help would be still > welcome. I'll have to do bisect, otherwise, and it will not be easy. > >> In 3.18, sound is nice and clear. >> >> In 3.19, sound is unusable. It produces nasty tone when it should be >> quiet, and there's at least as much noise as is sound. >> >> Unfortunately, list of mixers also changed (and there's cca 120 >> settings), but a) it does not work with the old list and b) nothing I >> could figure out did make the sound usable. Some setting resulted in >> even more noise. >> >> Any idea what could have caused it? > > I tried audio recording this time. > > In 2.6.28-nokia, it is neccessary to set "Input select" na "digital > mic", then it works. Input select being in "playback" option makes it > easy to miss. > > In 3.18 and 3.19-rc3, all I can record are zeros. > > Does playback/recording work for you on OMAP 3430-based machines? Same codec (tlv320aic3106) works fine on my am335x and omap-l138 boards. BeagleBoard-xM also fine with twl4030 codec. I don't have my n900 in hacking mode (it is still in use time-to-time) but looking at the dts file: you might want to add ai3x-micbias-vg property to the aic3x nodes to select the correct mic bias voltage. I can't recall what is appropriate for n900, but 2.6.28-nokia sources might give you the answer. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
