On Fri, 2010-02-05 at 16:29 +0200, Grazvydas Ignotas wrote: > On Fri, Feb 5, 2010 at 4:08 PM, Liam Girdwood <lrg@xxxxxxxxxxxxxxx> wrote: > > On Fri, 2010-02-05 at 15:13 +0200, Grazvydas Ignotas wrote: > >> Pandora's external DAC is connected to VSIM TWL4030 supply, so let's > >> start switching it too to save more power. > >> > >> Also DAC got it's own DAPM handler and the delay was removed > >> (it gave on audible improvement). > >> > > > > That's good to hear (pun intended). > > Uh, I meant "no audible improvement". However I've just checked the > DAC datasheet again and it requires 1ms delay between turning on/off > the supply and switching /PD pin (connected to > OMAP3_PANDORA_DAC_POWER_GPIO). Even though I hear no difference, > adding the delays back just in case. Updated patch attached. > _______________________________________________ Btw, have you tried turning the volume to mute when the DAC is enabled. It may lessen the pop at switch on. Acked-by: Liam Girdwood <lrg@xxxxxxxxxxxxxxx> -- Freelance Developer, SlimLogic Ltd ASoC and Voltage Regulator Maintainer. http://www.slimlogic.co.uk _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
