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Documentation / devicetree / bindings / input / st-keyscan.txt




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Based on kernel version 3.16. Page generated on 2014-08-06 21:37 EST.

1	* ST Keyscan controller Device Tree bindings
2	
3	The ST keyscan controller Device Tree binding is based on the
4	matrix-keymap.
5	
6	Required properties:
7	- compatible: "st,sti-keyscan"
8	
9	- reg: Register base address and size of st-keyscan controller.
10	
11	- interrupts: Interrupt number for the st-keyscan controller.
12	
13	- clocks: Must contain one entry, for the module clock.
14	  See ../clocks/clock-bindings.txt for details.
15	
16	- pinctrl: Should specify pin control groups used for this controller.
17	  See ../pinctrl/pinctrl-bindings.txt for details.
18	
19	- linux,keymap: The keymap for keys as described in the binding document
20	  devicetree/bindings/input/matrix-keymap.txt.
21	
22	- keypad,num-rows: Number of row lines connected to the keypad controller.
23	
24	- keypad,num-columns: Number of column lines connected to the keypad
25	  controller.
26	
27	Optional property:
28	- st,debounce_us: Debouncing interval time in microseconds
29	
30	Example:
31	
32	keyscan: keyscan@fe4b0000 {
33		compatible = "st,sti-keyscan";
34		reg = <0xfe4b0000 0x2000>;
35		interrupts = <GIC_SPI 212 IRQ_TYPE_NONE>;
36		clocks	= <&CLK_SYSIN>;
37		pinctrl-names = "default";
38		pinctrl-0 = <&pinctrl_keyscan>;
39	
40		keypad,num-rows = <4>;
41		keypad,num-columns = <4>;
42		st,debounce_us = <5000>;
43	
44		linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_F13)
45				 MATRIX_KEY(0x00, 0x01, KEY_F9)
46				 MATRIX_KEY(0x00, 0x02, KEY_F5)
47				 MATRIX_KEY(0x00, 0x03, KEY_F1)
48				 MATRIX_KEY(0x01, 0x00, KEY_F14)
49				 MATRIX_KEY(0x01, 0x01, KEY_F10)
50				 MATRIX_KEY(0x01, 0x02, KEY_F6)
51				 MATRIX_KEY(0x01, 0x03, KEY_F2)
52				 MATRIX_KEY(0x02, 0x00, KEY_F15)
53				 MATRIX_KEY(0x02, 0x01, KEY_F11)
54				 MATRIX_KEY(0x02, 0x02, KEY_F7)
55				 MATRIX_KEY(0x02, 0x03, KEY_F3)
56				 MATRIX_KEY(0x03, 0x00, KEY_F16)
57				 MATRIX_KEY(0x03, 0x01, KEY_F12)
58				 MATRIX_KEY(0x03, 0x02, KEY_F8)
59				 MATRIX_KEY(0x03, 0x03, KEY_F4) >;
60		};
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