Re: [PATCH] nokia N9: Add support for magnetometer and touchscreen

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Hi,

On Tue, Jan 02, 2018 at 02:17:22PM +0100, Pavel Machek wrote:
> This adds dts support for magnetometer and touchscreen on Nokia N9.

I think it makes sense to have this splitted.

> Signed-off-by: Pavel Machek <pavel@xxxxxx>
> 
> diff --git a/arch/arm/boot/dts/omap3-n9.dts b/arch/arm/boot/dts/omap3-n9.dts
> index 39e35f8..57a6679 100644
> --- a/arch/arm/boot/dts/omap3-n9.dts
> +++ b/arch/arm/boot/dts/omap3-n9.dts
> @@ -36,6 +57,22 @@
>  			};
>  		};
>  	};
> +
> +	touch@4b {

touchscreen@

> +		compatible = "atmel,maxtouch";
> +		reg = <0x4b>;
> +		interrupt-parent = <&gpio2>;
> +		interrupts = <29 2>; /* gpio_61, IRQF_TRIGGER_FALLING*/

reset-gpios = <&gpio3 17 GPIO_ACTIVE_SOMETHING>;

> +		vdd-supply = <&vio>;
> +		avdd-supply = <&vaux1>;

Those two are not mentioned in the binding and not supported by the
driver as far as I can see?

> +	};
> +};

Touchscreen with the same settings is required for n950, so it
should be in the shared n950 + n9 file.

> +&i2c3 {
> +	ak8975@0f {
> +		compatible = "asahi-kasei,ak8975";
> +		reg = <0x0f>;
> +	};
>  };

Looking at the N9 board file this is missing a rotation matrix. This
is supported by the binding:

Documentation/devicetree/bindings/iio/magnetometer/ak8975.txt

>  
>  &isp {

-- Sebastian

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