On Tue, Nov 24, 2015 at 12:59:49PM +0200, Adriana Reus wrote: > Add a property to allow changing the default power-saving mode. > By default, at read raw the chip will activate and provide > one measurent, then it will shut itself down. However, the > chip can also work in "continuous" mode which may be more reliable > but is also more power consuming. > > Signed-off-by: Adriana Reus <adriana.reus@xxxxxxxxx> > --- > Documentation/devicetree/bindings/iio/light/us5182d.txt | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/light/us5182d.txt b/Documentation/devicetree/bindings/iio/light/us5182d.txt > index 6f0a530..a619799 100644 > --- a/Documentation/devicetree/bindings/iio/light/us5182d.txt > +++ b/Documentation/devicetree/bindings/iio/light/us5182d.txt > @@ -7,13 +7,24 @@ Required properties: > Optional properties: > - upisemi,glass-coef: glass attenuation factor - compensation factor of > resolution 1000 for material transmittance. > + > - upisemi,dark-ths: array of 8 elements containing 16-bit thresholds (adc > counts) corresponding to every scale. > + > - upisemi,upper-dark-gain: 8-bit dark gain compensation factor(4 int and 4 > fractional bits - Q4.4) applied when light > threshold > + > - upisemi,lower-dark-gain: 8-bit dark gain compensation factor(4 int and 4 > fractional bits - Q4.4) applied when light < threshold > > +- upisemi,continuous: This chip has two power modes: one-shot (chip takes one > + measurement and then shuts itself down) and continuous ( > + chip takes continuous measurements). The one-shot mode is > + more power-friendly but the continuous mode may be more > + reliable. If this property is specified the continuous > + mode will be used instead of the default one-shot one for > + raw reads. I could imagine an OS may want to decide this on its own or use a mixture of the modes. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
