[alsa-devel] [PATCH -next] ASoC: pandora: Add DAC regulator support

Grazvydas Ignotas notasas at gmail.com
Fri Feb 5 15:29:53 CET 2010

On Fri, Feb 5, 2010 at 4:08 PM, Liam Girdwood <lrg at slimlogic.co.uk> 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.
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