diff options
| author | Gao Pan <pandy.gao@nxp.com> | 2017-03-16 16:31:56 +0800 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
| commit | c5f5a64314fda9d46efe919522de54dd0559ebd7 (patch) | |
| tree | 68b41e7c0d123c0ca8ce1a45263ef15baff45c1b /Documentation | |
| parent | e04e96cd7abf06f8e6af5efb0b29aafaccb711ed (diff) | |
MLK-14392-1 input: touch: add focaltech touch screen support
add focaltech touch screen support
Signed-off-by: Gao Pan <pandy.gao@nxp.com>
(cherry-pick from 595cefbee5586e77ceb9ad900c256177a98367c7)
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/focaltech-ts.txt | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/focaltech-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/focaltech-ts.txt new file mode 100644 index 000000000000..b8e46cc8f8e8 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/focaltech-ts.txt @@ -0,0 +1,46 @@ +FocalTech touch controller + +The focaltech controller is connected to host processor via i2c. +The controller generates interrupts when the user touches the panel. +The host controller is expected to read the touch coordinates over +i2c and pass the coordinates to the rest of the system. + +Required properties: + - compatible : should be "focaltech,fts" + - reg : i2c slave address of the device, should be <0x38> + - interrupt-parent : parent of interrupt + - interrupts : irq gpio, "0x02" stands for that the irq triggered by falling edge. + - focaltech,irq-gpio : irq gpio, same as "interrupts" node. + - focaltech,reset-gpio : reset gpio + - focaltech,num-max-touches : maximum number of touches support + - focaltech,display-coords : display resolution in pixels. A four tuple consisting of minX, minY, maxX and maxY. + +Optional properties: + - focaltech,have-key : specify if virtual keys are supported + - focaltech,key-number : number of keys + - focaltech,keys : virtual key codes mapping to the coords + - focaltech,key-y-coord : constant y coordinate of keys, depends on the y resolution + - focaltech,key-x-coords : constant x coordinates of keys, depends on the x resolution + - focaltech,swap-xy : swap x-y coordinates + + +Example: + i2c@f9927000 { + focaltech@38{ + compatible = "focaltech,fts"; + reg = <0x38>; + interrupt-parent = <&msm_gpio>; + interrupts = <13 0x02>; + focaltech,reset-gpio = <&msm_gpio 12 0x01>; + focaltech,irq-gpio = <&msm_gpio 13 0x02>; + focaltech,max-touch-number = <5>; + focaltech,display-coords = <0 0 1080 1920>; + + focaltech,have-key; + focaltech,key-number = <3>; + focaltech,keys = <139 102 158>; + focaltech,key-y-coord = <2000>; + focaltech,key-x-coords = <200 600 800>; + focaltech,swap-xy; + }; + }; |