| Message ID | 8446d6df4b39f0b0acdc37afd4d66dbcca4d09ba.1440162473.git.maitysanchayan@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 2015-08-21 06:26, Sanchayan Maity wrote: > This adds device tree binding documentation for the Colibri VF50 > touchscreen driver. > > Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> > --- > .../bindings/input/touchscreen/colibri-vf50-ts.txt | 36 ++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > > diff --git > a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > new file mode 100644 > index 0000000..e615aa9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > @@ -0,0 +1,36 @@ > +* Toradex Colibri VF50 Touchscreen driver > + > +Required Properties: > +- compatible must be toradex,vf50-touchscreen > +- io-channels: adc channels being used by the Colibri VF50 module > +- xp-gpios: FET gate driver for input of X+ > +- xm-gpios: FET gate driver for input of X- > +- yp-gpios: FET gate driver for input of Y+ > +- ym-gpios: FET gate driver for input of Y- > +- interrupt-parent: phandle for the interrupt controller > +- interrupts: pen irq interrupt for touch detection I like the use of the interrupt interface for the touch detection pin. Maybe you can mention here that this is (typically) a GPIO... > +- pinctrl-names: "idle", "default", "gpios" > +- pinctrl-0: pinctrl node for idle state gpio pinmux > +- pinctrl-1: pinctrl node for touch detection state pinmux "touch detection" for default is rather confusing or even wrong. The Idle state is used for pen/touch detection, default is used for X/Y and Pressure measurement (maybe better described as touch measurement). > +- pinctrl-2: pinctrl node for gpios functioning as FET gate drivers > +- vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values > + > +Example: > + > + touchctrl: vf50_touchctrl { > + 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>; > + status = "disabled"; > + }; Otherwise I agree with 1 and 2: Acked-by: Stefan Agner <stefan@agner.ch> -- Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 15-08-22 18:36:54, Stefan Agner wrote: > On 2015-08-21 06:26, Sanchayan Maity wrote: > > This adds device tree binding documentation for the Colibri VF50 > > touchscreen driver. > > > > Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> > > --- > > .../bindings/input/touchscreen/colibri-vf50-ts.txt | 36 ++++++++++++++++++++++ > > 1 file changed, 36 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > > > > diff --git > > a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > > b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > > new file mode 100644 > > index 0000000..e615aa9 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt > > @@ -0,0 +1,36 @@ > > +* Toradex Colibri VF50 Touchscreen driver > > + > > +Required Properties: > > +- compatible must be toradex,vf50-touchscreen > > +- io-channels: adc channels being used by the Colibri VF50 module > > +- xp-gpios: FET gate driver for input of X+ > > +- xm-gpios: FET gate driver for input of X- > > +- yp-gpios: FET gate driver for input of Y+ > > +- ym-gpios: FET gate driver for input of Y- > > +- interrupt-parent: phandle for the interrupt controller > > +- interrupts: pen irq interrupt for touch detection > > I like the use of the interrupt interface for the touch detection pin. > Maybe you can mention here that this is (typically) a GPIO... > > > +- pinctrl-names: "idle", "default", "gpios" > > +- pinctrl-0: pinctrl node for idle state gpio pinmux > > +- pinctrl-1: pinctrl node for touch detection state pinmux > > "touch detection" for default is rather confusing or even wrong. The > Idle state is used for pen/touch detection, default is used for X/Y and > Pressure measurement (maybe better described as touch measurement). Ok. Understood. I see how my wordings can create confusion or are misleading. Will fix. - Sanchayan. > > > +- pinctrl-2: pinctrl node for gpios functioning as FET gate drivers > > +- vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values > > + > > +Example: > > + > > + touchctrl: vf50_touchctrl { > > + 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>; > > + status = "disabled"; > > + }; > > Otherwise I agree with 1 and 2: > > Acked-by: Stefan Agner <stefan@agner.ch> > > -- > Stefan > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt new file mode 100644 index 0000000..e615aa9 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt @@ -0,0 +1,36 @@ +* Toradex Colibri VF50 Touchscreen driver + +Required Properties: +- compatible must be toradex,vf50-touchscreen +- io-channels: adc channels being used by the Colibri VF50 module +- xp-gpios: FET gate driver for input of X+ +- xm-gpios: FET gate driver for input of X- +- yp-gpios: FET gate driver for input of Y+ +- ym-gpios: FET gate driver for input of Y- +- interrupt-parent: phandle for the interrupt controller +- interrupts: pen irq interrupt for touch detection +- pinctrl-names: "idle", "default", "gpios" +- pinctrl-0: pinctrl node for idle state gpio pinmux +- pinctrl-1: pinctrl node for touch detection state pinmux +- pinctrl-2: pinctrl node for gpios functioning as FET gate drivers +- vf50-ts-min-pressure: pressure level at which to stop measuring X/Y values + +Example: + + touchctrl: vf50_touchctrl { + 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>; + status = "disabled"; + };
This adds device tree binding documentation for the Colibri VF50 touchscreen driver. Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com> --- .../bindings/input/touchscreen/colibri-vf50-ts.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt