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Diffstat (limited to 'Bindings/input/atmel,maxtouch.txt')
| -rw-r--r-- | Bindings/input/atmel,maxtouch.txt | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Bindings/input/atmel,maxtouch.txt b/Bindings/input/atmel,maxtouch.txt index baef432e8369..1852906517ab 100644 --- a/Bindings/input/atmel,maxtouch.txt +++ b/Bindings/input/atmel,maxtouch.txt @@ -11,10 +11,17 @@ Required properties: Optional properties for main touchpad device: -- linux,gpio-keymap: An array of up to 4 entries indicating the Linux - keycode generated by each GPIO. Linux keycodes are defined in +- 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. + Example: touch@4b { |