linux-kernel - Re: [PATCH 4/4] dt-bindings: input: Add documentation for gp2a sensor

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Date:   Fri, 25 Jan 2019 17:32:37 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
Cc:     robh+dt@...nel.org, mark.rutland@....com,
        mchehab+samsung@...nel.org, colyli@...e.de,
        ckeepax@...nsource.wolfsonmicro.com, andrew.smirnov@...il.com,
        arnd@...db.de, xiaotong.lu@...eadtrum.com, xc-racer2@...e.ca,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 4/4] dt-bindings: input: Add documentation for gp2a sensor

On Fri, Jan 25, 2019 at 06:50:45PM +0100, Paweł Chmiel wrote:
> From: Jonathan Bakker <xc-racer2@...e.ca>
> 
> This commit adds documentation for Sharp GP2AP002A00F.
> It's Proximity/Opto Sensor connected over i2c.
> 
> Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
> Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
> ---
>  .../bindings/input/sharp,gp2ap002a00f.txt     | 29 +++++++++++++++++++
>  1 file changed, 29 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt
> 
> diff --git a/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt b/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt
> new file mode 100644
> index 000000000000..c524eb7d3d60
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/sharp,gp2ap002a00f.txt
> @@ -0,0 +1,29 @@
> +* Sharp GP2AP002A00F I2C Proximity/Opto Sensor
> +
> +Required properties:
> +- compatible : Should be "sharp,gp2ap002a00f"
> +- reg : The I2C address of the sensor
> +- vout-gpio : The gpio connected to the vout pin

Do you know what it is for?

> +- interrupt-parent : should be the phandle for the interrupt controller
> +- interrupts : Interrupt mapping for GPIO IRQ, it should by configured with
> +		flags IRQ_TYPE_EDGE_BOTH
> +
> +Optional properties:
> +- wakeup : If the device is capable of waking up the system
> +- io-channels : Phandle to an ADC channel connected to the light sensor
> +- io-channel-names = "light";
> +- poll-interval : Poll interval time in milliseconds, default 500ms
> +- light-adc-max : Maximum light value reported, default 4096
> +- light-adc-fuzz : Fuzz value for reported light value, default 80
> +
> +Example:
> +
> +gp2a@44 {
> +	compatible = "sharp,gp2ap002a00f";
> +	reg = <0x44>;
> +	vout-gpio = <&gph0 2 GPIO_ACTIVE_HIGH>;
> +	interrupt-parent = <&gph0>;
> +	interrupts = <2 IRQ_TYPE_EDGE_BOTH>;
> +	io-channels = <&adc 9>;
> +	io-channel-names = "light";
> +};
> -- 
> 2.17.1
> 

-- 
Dmitry