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author | Max Krummenacher <max.krummenacher@toradex.com> | 2019-05-23 19:16:27 +0200 |
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committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-02-11 09:48:21 +0100 |
commit | 356efa89e52376b2c02645e57d3116bebc9dc3a2 (patch) | |
tree | 8e3748aecf005aa8a996802acb998787ae5e4abb /Documentation | |
parent | ae76567cecf86c75e0a1623fcbabd121bac5dd1b (diff) |
Input: colbri-vf50-ts: improve bindings documentation
Clarify properties.
Drop unused pinctrl-2 state 'gpio'.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt index df531b5b6a0d..8350510231eb 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt @@ -3,16 +3,17 @@ Required Properties: - compatible must be toradex,vf50-touchscreen - io-channels: adc channels being used by the Colibri VF50 module + IIO ADC for Y-, X-, Y+, X+ connections - 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 pen/touch detection state pinmux +- interrupts: pen irq interrupt for touch detection, signal from X plate +- pinctrl-names: "idle", "default" +- pinctrl-0: pinctrl node for pen/touch detection, pinctrl must provide + pull-up resistor on X+, X-. - pinctrl-1: pinctrl node for X/Y and pressure measurement (ADC) 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: @@ -20,7 +21,7 @@ Example: touchctrl: vf50_touchctrl { compatible = "toradex,vf50-touchscreen"; io-channels = <&adc1 0>,<&adc0 0>, - <&adc0 1>,<&adc1 2>; + <&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>; @@ -28,8 +29,7 @@ Example: 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>; + pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios> ; + pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>; vf50-ts-min-pressure = <200>; }; |