From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- .../bindings/input/touchscreen/iqs5xx.txt | 80 ++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/iqs5xx.txt (limited to 'Documentation/devicetree/bindings/input/touchscreen/iqs5xx.txt') diff --git a/Documentation/devicetree/bindings/input/touchscreen/iqs5xx.txt b/Documentation/devicetree/bindings/input/touchscreen/iqs5xx.txt new file mode 100644 index 000000000..efa0820e2 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/iqs5xx.txt @@ -0,0 +1,80 @@ +Azoteq IQS550/572/525 Trackpad/Touchscreen Controller + +Required properties: + +- compatible : Must be equal to one of the following: + "azoteq,iqs550" + "azoteq,iqs572" + "azoteq,iqs525" + +- reg : I2C slave address for the device. + +- interrupts : GPIO to which the device's active-high RDY + output is connected (see [0]). + +- reset-gpios : GPIO to which the device's active-low NRST + input is connected (see [1]). + +Optional properties: + +- touchscreen-min-x : See [2]. + +- touchscreen-min-y : See [2]. + +- touchscreen-size-x : See [2]. If this property is omitted, the + maximum x-coordinate is specified by the + device's "X Resolution" register. + +- touchscreen-size-y : See [2]. If this property is omitted, the + maximum y-coordinate is specified by the + device's "Y Resolution" register. + +- touchscreen-max-pressure : See [2]. Pressure is expressed as the sum of + the deltas across all channels impacted by a + touch event. A channel's delta is calculated + as its count value minus a reference, where + the count value is inversely proportional to + the channel's capacitance. + +- touchscreen-fuzz-x : See [2]. + +- touchscreen-fuzz-y : See [2]. + +- touchscreen-fuzz-pressure : See [2]. + +- touchscreen-inverted-x : See [2]. Inversion is applied relative to that + which may already be specified by the device's + FLIP_X and FLIP_Y register fields. + +- touchscreen-inverted-y : See [2]. Inversion is applied relative to that + which may already be specified by the device's + FLIP_X and FLIP_Y register fields. + +- touchscreen-swapped-x-y : See [2]. Swapping is applied relative to that + which may already be specified by the device's + SWITCH_XY_AXIS register field. + +[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt +[1]: Documentation/devicetree/bindings/gpio/gpio.txt +[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt + +Example: + + &i2c1 { + /* ... */ + + touchscreen@74 { + compatible = "azoteq,iqs550"; + reg = <0x74>; + interrupt-parent = <&gpio>; + interrupts = <17 4>; + reset-gpios = <&gpio 27 1>; + + touchscreen-size-x = <640>; + touchscreen-size-y = <480>; + + touchscreen-max-pressure = <16000>; + }; + + /* ... */ + }; -- cgit v1.2.3