1 NXP LPC32xx Key Scan Interface
4 - compatible: Should be "nxp,lpc3220-key"
5 - reg: Physical base address of the controller and length of memory mapped
7 - interrupts: The interrupt number to the cpu.
8 - keypad,num-rows: Number of rows and columns, e.g. 1: 1x1, 6: 6x6
9 - keypad,num-columns: Must be equal to keypad,num-rows since LPC32xx only
10 supports square matrices
11 - nxp,debounce-delay-ms: Debounce delay in ms
12 - nxp,scan-delay-ms: Repeated scan period in ms
13 - linux,keymap: the key-code to be reported when the key is pressed
14 and released, see also
15 Documentation/devicetree/bindings/input/matrix-keymap.txt
20 compatible = "nxp,lpc3220-key";
21 reg = <0x40050000 0x1000>;
23 keypad,num-rows = <1>;
24 keypad,num-columns = <1>;
25 nxp,debounce-delay-ms = <3>;
26 nxp,scan-delay-ms = <34>;
27 linux,keymap = <0x00000002>;