blob: 2b075a080d303bab7fc2353093ef09f9770edc0f [file] [log] [blame]
NXP LPC32xx Key Scan Interface
This binding is based on the matrix-keymap binding with the following
Required Properties:
- compatible: Should be "nxp,lpc3220-key"
- reg: Physical base address of the controller and length of memory mapped
- interrupts: The interrupt number to the cpu.
- clocks: phandle to clock controller plus clock-specifier pair
- nxp,debounce-delay-ms: Debounce delay in ms
- nxp,scan-delay-ms: Repeated scan period in ms
- linux,keymap: the key-code to be reported when the key is pressed
and released, see also
Note: keypad,num-rows and keypad,num-columns are required, and must be equal
since LPC32xx only supports square matrices
key@40050000 {
compatible = "nxp,lpc3220-key";
reg = <0x40050000 0x1000>;
clocks = <&clk LPC32XX_CLK_KEY>;
interrupt-parent = <&sic1>;
interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
keypad,num-rows = <1>;
keypad,num-columns = <1>;
nxp,debounce-delay-ms = <3>;
nxp,scan-delay-ms = <34>;
linux,keymap = <0x00000002>;