1NXP LPC32xx Key Scan Interface
2
3This binding is based on the matrix-keymap binding with the following
4changes:
5
6Required Properties:
7- compatible: Should be "nxp,lpc3220-key"
8- reg: Physical base address of the controller and length of memory mapped
9  region.
10- interrupts: The interrupt number to the cpu.
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
16
17Note: keypad,num-rows and keypad,num-columns are required, and must be equal
18since LPC32xx only supports square matrices
19
20Example:
21
22	key@40050000 {
23		compatible = "nxp,lpc3220-key";
24		reg = <0x40050000 0x1000>;
25		interrupts = <54 0>;
26		keypad,num-rows = <1>;
27		keypad,num-columns = <1>;
28		nxp,debounce-delay-ms = <3>;
29		nxp,scan-delay-ms = <34>;
30		linux,keymap = <0x00000002>;
31	};
32