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Diffstat (limited to 'Documentation/devicetree/bindings/input/atmel,maxtouch.txt')
-rw-r--r-- | Documentation/devicetree/bindings/input/atmel,maxtouch.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt new file mode 100644 index 000000000000..6c868fce477c --- /dev/null +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt @@ -0,0 +1,44 @@ +Atmel maXTouch touchscreen/touchpad + +Required properties: +- compatible: + atmel,maxtouch + +- reg: The I2C address of the device + +- interrupts: The sink for the touchpad's IRQ output + See ../interrupt-controller/interrupts.txt + +Optional properties for main touchpad device: + +- linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages + on GPIO bit changes. An array of up to 8 entries can be provided + indicating the Linux keycode mapped to each bit of the status byte, + starting at the LSB. Linux keycodes are defined in + <dt-bindings/input/input.h>. + + Note: the numbering of the GPIOs and the bit they start at varies between + maXTouch devices. You must either refer to the documentation, or + experiment to determine which bit corresponds to which input. Use + KEY_RESERVED for unused padding values. + +- atmel,suspend-mode: Select method used to suspend: + MXT_SUSPEND_DEEP_SLEEP - use T7 to suspend the device into deep sleep + MXT_SUSPEND_T9_CTRL - use T9.CTRL to turn off touch processing + Definitions are in <dt-bindings/input/atmel_mxt_ts.h>. + +- atmel,reset-gpio: Configure RESET GPIO. Required for regulator support. + +- atmel,cfg_name: Provide name of configuration file in OBP_RAW format. This + will be downloaded from the firmware loader on probe to the device. + +- atmel,input_name: Override name of input device from the default. + +Example: + + touch@4b { + compatible = "atmel,maxtouch"; + reg = <0x4b>; + interrupt-parent = <&gpio>; + interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>; + }; |