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| author | Adriana Reus <adriana.reus@intel.com> | 2015-11-24 12:59:49 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-12-02 18:42:03 +0000 |
| commit | 023e30fb0d3a3b9d6b8dc9e47590aa544d58a22f (patch) | |
| tree | 1c4bd91521c869205f83c125c9d43a1bc611c9e5 | |
| parent | c3304c212326cfcabb1faf6a0035d0c631778d5b (diff) | |
| download | op-kernel-dev-023e30fb0d3a3b9d6b8dc9e47590aa544d58a22f.zip op-kernel-dev-023e30fb0d3a3b9d6b8dc9e47590aa544d58a22f.tar.gz | |
Documentation: devicetree: Add property for controlling power saving mode for the us5182 als sensor
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@intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/iio/light/us5182d.txt | 11 |
1 files changed, 11 insertions, 0 deletions
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. + If the optional properties are not specified these factors will default to the values in the below example. The glass-coef defaults to no compensation for the covering material. |
