Hi Jonathan, On 2 September 2018 at 16:51, Jonathan Cameron <jic23@xxxxxxxxxx> wrote: > On Wed, 29 Aug 2018 14:04:04 +0800 > Baolin Wang <baolin.wang@xxxxxxxxxx> wrote: > >> The headset device will use channel 20 of ADC controller to detect events, >> but it needs the raw ADC data to do conversion according to its own formula. >> >> Thus we should configure the channel mask separately and configure channel >> 20 as IIO_CHAN_INFO_RAW, as well as adding raw data read support. >> >> Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx> > I'm still a little unclear on whether there is fundamentally something different > about this channel or whether this is just a policy decision for particular > (possibly all) board. For now we'll go with this change, but if anyone screams > we will have to then go the nasty route of supporting both processed and raw > for channel 20. Until now, channel 20 is always used for the headset on the SC27xx series PMICs. Yes, this is a policy decision, but for all the SC27xx series PMICs. > > Applied to the togreg branch of iio.git and pushed out as testing for the > autobuilders to play with it. Thanks. -- Baolin Wang Best Regards
