On 2015-08-21 06:26, Sanchayan Maity wrote:
> Add device tree node for touchscreen support on Colibri VF50. The
> touchscreen functionality on VF50 uses the ADC channels of Vybrid
> and some GPIOs. Also add pinctrl nodes for proper pinmux.
>
> Signed-off-by: Sanchayan Maity <maitysanchayan@xxxxxxxxx>
> ---
> arch/arm/boot/dts/vf500-colibri-eval-v3.dts | 4 +++
> arch/arm/boot/dts/vf500-colibri.dtsi | 47 +++++++++++++++++++++++++++++
> 2 files changed, 51 insertions(+)
>
> diff --git a/arch/arm/boot/dts/vf500-colibri-eval-v3.dts
> b/arch/arm/boot/dts/vf500-colibri-eval-v3.dts
> index 7fc782c..14c0b00 100644
> --- a/arch/arm/boot/dts/vf500-colibri-eval-v3.dts
> +++ b/arch/arm/boot/dts/vf500-colibri-eval-v3.dts
> @@ -15,3 +15,7 @@
> model = "Toradex Colibri VF50 on Colibri Evaluation Board";
> compatible = "toradex,vf500-colibri_vf50-on-eval",
> "toradex,vf500-colibri_vf50", "fsl,vf500";
> };
> +
> +&touchscreen {
> + status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/vf500-colibri.dtsi
> b/arch/arm/boot/dts/vf500-colibri.dtsi
> index cee34a3..84f091d 100644
> --- a/arch/arm/boot/dts/vf500-colibri.dtsi
> +++ b/arch/arm/boot/dts/vf500-colibri.dtsi
> @@ -17,4 +17,51 @@
> memory {
> reg = <0x80000000 0x8000000>;
> };
> +
> + touchscreen: vf50-touchscreen {
> + compatible = "toradex,vf50-touchscreen";
> + io-channels = <&adc1 0>,<&adc0 0>,
> + <&adc0 1>,<&adc1 2>;
> + xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
> + xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
> + yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
> + ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
> + interrupt-parent = <&gpio0>;
> + interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
> + pinctrl-names = "idle","default","gpios";
> + pinctrl-0 = <&pinctrl_touchctrl_idle>;
> + pinctrl-1 = <&pinctrl_touchctrl_default>;
> + pinctrl-2 = <&pinctrl_touchctrl_gpios>;
> + vf50-ts-min-pressure = <200>;
Since this is a touch screen related property, we even would want to
have that in the board specific device-tree (vf500-colibri-eval-v3.dts).
--
Stefan
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