Added entries in i2c/vendor-prefixes for the us5182d als and proximity sensor. Also added a documentation file for this sensor's properties. Signed-off-by: Adriana Reus <adriana.reus@xxxxxxxxx> --- Changes since v6: * Added some aditional clarifications on the optional properties, as suggested by Rob. .../devicetree/bindings/iio/light/us5182d.txt | 34 ++++++++++++++++++++++ .../devicetree/bindings/vendor-prefixes.txt | 1 + 2 files changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/light/us5182d.txt diff --git a/Documentation/devicetree/bindings/iio/light/us5182d.txt b/Documentation/devicetree/bindings/iio/light/us5182d.txt new file mode 100644 index 0000000..6f0a530 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/light/us5182d.txt @@ -0,0 +1,34 @@ +* 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 + +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>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 341695b..85ba915 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -213,6 +213,7 @@ toshiba Toshiba Corporation toumaz Toumaz tplink TP-LINK Technologies Co., Ltd. truly Truly Semiconductors Limited +upisemi uPI Semiconductor Corp. usi Universal Scientific Industrial Co., Ltd. v3 V3 Semiconductor variscite Variscite Ltd. -- 1.9.1 -- 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