[PATCH 1/2 v2] iio: light: add DT bindings for Capella CM3605

[PATCH 1/2 v2] iio: light: add DT bindings for Capella CM3605

[Linus Walleij]

This adds device tree bindings for the Capella Microsystems CM3605
ambient light sensor and short range proximity sensor.

Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Capella Microsystems <capellamicro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Kevin Tsai <ktsai-GubuWUlQtMwciDkP5Hr2oA@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
ChangeLog v1->v2:
- Rename aset-resistance to aset-resistance-ohms
---
 .../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..56331a79f9ab
--- /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-ohms: the sensitivity calibration resistance,
+  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-ohms = <100000>;
+	interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
+	io-channels = <&adc 0x01>;
+	io-channel-names = "aout";
+};
-- 
2.7.4

Re: [PATCH 1/2 v2] iio: light: add DT bindings for Capella CM3605

[Jonathan Cameron]

On 18/12/16 21:55, Linus Walleij wrote:
> This adds device tree bindings for the Capella Microsystems CM3605
> ambient light sensor and short range proximity sensor.
> 
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: Capella Microsystems <capellamicro-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Cc: Kevin Tsai <ktsai-GubuWUlQtMwciDkP5Hr2oA@public.gmane.org>
> Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Applied
> ---
> ChangeLog v1->v2:
> - Rename aset-resistance to aset-resistance-ohms
> ---
>  .../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..56331a79f9ab
> --- /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-ohms: the sensitivity calibration resistance,
> +  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-ohms = <100000>;
> +	interrupts = <1 IRQ_TYPE_EDGE_BOTH>;
> +	io-channels = <&adc 0x01>;
> +	io-channel-names = "aout";
> +};
>