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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/iio/light/us5182d.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iio/light/us5182d.txt')
-rw-r--r-- | Documentation/devicetree/bindings/iio/light/us5182d.txt | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/light/us5182d.txt b/Documentation/devicetree/bindings/iio/light/us5182d.txt new file mode 100644 index 000000000..a61979997 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/us5182d.txt @@ -0,0 +1,45 @@ +* UPISEMI us5182d I2C ALS and Proximity sensor + +Required properties: +- compatible: must be "upisemi,usd5182" +- reg: the I2C address of the device + +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. +The threshold array defaults to experimental values that work with US5182D +sensor on evaluation board - roughly between 12-32 lux. +There will be no dark-gain compensation by default when ALS > thresh +(0 * dark-gain), and a 1.35 compensation factor when ALS < thresh. + +Example: + + usd5182@39 { + compatible = "upisemi,usd5182"; + reg = <0x39>; + upisemi,glass-coef = < 1000 >; + upisemi,dark-ths = /bits/ 16 <170 200 512 512 800 2000 4000 8000>; + upisemi,upper-dark-gain = /bits/ 8 <0x00>; + upisemi,lower-dark-gain = /bits/ 8 <0x16>; + }; |