1. 21 7月, 2010 1 次提交
    • P
      ASoC: TWL4030: Add configurable delay after digimic enable · 01ea6ba2
      Peter Ujfalusi 提交于
      When digital microphones are connected to twl, delay is
      needed after enabling the digimic interface of the codec.
      Add new parameter for the setup data, which can be used
      to pass the apropriate delay in ms after the digimic
      interface has been enabled.
      
      Without certain delay (in certain HW configuration) the
      beggining of the recorded sample contains a glitch, which
      is generated by the digital microphones.
      
      Delaying the micbias1, 2 (which is the bias for the digimic0
      or 1) does not help, since the glitch is coming after
      switching the digimic interface.
      
      Reversing the micbias and digimic enable order does not
      work either (in that case the wait need to be added after
      the micbias enabled).
      Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
      Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
      01ea6ba2
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