--- zzzz-none-000/linux-3.10.107/Documentation/devicetree/bindings/input/stmpe-keypad.txt	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/Documentation/devicetree/bindings/input/stmpe-keypad.txt	2021-02-04 17:41:59.000000000 +0000
@@ -8,6 +8,8 @@
  - debounce-interval        : Debouncing interval time in milliseconds
  - st,scan-count            : Scanning cycles elapsed before key data is updated
  - st,no-autorepeat         : If specified device will not autorepeat
+ - keypad,num-rows          : See ./matrix-keymap.txt
+ - keypad,num-columns       : See ./matrix-keymap.txt
 
 Example: