On Wed, Dec 07, 2016 at 02:49:18PM +0100, Linus Walleij wrote:
> This adds device tree bindings for the Capella Microsystems CM3605
> ambient light sensor and short range proximity sensor.
>
> Cc: devicetree@xxxxxxxxxxxxxxx
> Cc: Capella Microsystems <capellamicro@xxxxxxxxx>
> Cc: Kevin Tsai <ktsai@xxxxxxxxxxxxxxxx>
> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
> ---
> .../devicetree/bindings/iio/light/cm3605.txt | 41 ++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/light/cm3605.txt
>
> diff --git a/Documentation/devicetree/bindings/iio/light/cm3605.txt b/Documentation/devicetree/bindings/iio/light/cm3605.txt
> new file mode 100644
> index 000000000000..f0152559bdb9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/cm3605.txt
> @@ -0,0 +1,41 @@
> +Capella Microsystems CM3605
> +Ambient Light and Short Distance Proximity Sensor
> +
> +The CM3605 is an entirely analog part which however require quite a bit of
> +software logic to interface a host operating system.
> +
> +This ALS and proximity sensor was one of the very first deployed in mobile
> +handsets, notably it is used in the very first Nexus One Android phone from
> +2010.
> +
> +Required properties:
> +- compatible: must be: "capella,cm3605"
> +- aset-gpios: GPIO line controlling the ASET line (drive low
> + to activate the ALS, should be flagged GPIO_ACTIVE_LOW)
> +- interrupts: the IRQ line (such as a GPIO) that is connected to
> + the POUT (proximity sensor out) line. The edge detection must
> + be set to IRQ_TYPE_EDGE_BOTH so as to detect movements toward
> + and away from the proximity sensor.
> +- io-channels: the ADC channel used for converting the voltage from
> + AOUT to a digital representation.
> +- io-channel-names: must be "aout"
> +
> +Optional properties:
> +- vdd-supply: regulator supplying VDD power to the component.
> +- capella,aset-resistance: the sensitivity calibration resistance,
Add a '-ohms' suffix. With that,
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> + in Ohms. Valid values are: 50000, 100000, 300000 and 600000,
> + as these are the resistance values that we are supplied with
> + calibration curves for. If not supplied, 100 kOhm will be assumed
> + but it is strongly recommended to supply this.
> +
> +Example:
> +
> +cm3605 {
> + compatible = "capella,cm3605";
> + vdd-supply = <&foo_reg>;
> + aset-gpios = <&foo_gpio 1 GPIO_ACTIVE_LOW>;
> + capella,aset-resistance = <100000>; // Ohms
> + interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
> + io-channels = <&adc 0x01>;
> + io-channel-names = "aout";
> +};
> --
> 2.7.4
>
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