1 * Marvell PXA Keypad controller
2
3 Required Properties
4 - compatible : should be "marvell,pxa27x-keypad"
5 - reg : Address and length of the register set for the device
6 - interrupts : The interrupt for the keypad controller
7 - marvell,debounce-interval : How long time the key will be
8 recognized when it is pressed. It is a u32 value, and bit[31:16]
9 is debounce interval for direct key and bit[15:0] is debounce
10 interval for matrix key. The value is in binary number of 2ms
11
12 Optional Properties For Matrix Keyes
13 Please refer to matrix-keymap.txt
14
15 Optional Properties for Direct Keyes
16 - marvell,direct-key-count : How many direct keyes are used.
17 - marvell,direct-key-mask : The mask indicates which keyes
18 are used. If bit[X] of the mask is set, the direct key X
19 is used.
20 - marvell,direct-key-low-active : Direct key status register
21 tells the level of pins that connects to the direct keyes.
22 When this property is set, it means that when the pin level
23 is low, the key is pressed(active).
24 - marvell,direct-key-map : It is a u16 array. Each item indicates
25 the linux key-code for the direct key.
26
27 Optional Properties For Rotary
28 - marvell,rotary0 : It is a u32 value. Bit[31:16] is the
29 linux key-code for rotary up. Bit[15:0] is the linux key-code
30 for rotary down. It is for rotary 0.
31 - marvell,rotary1 : Same as marvell,rotary0. It is for rotary 1.
32 - marvell,rotary-rel-key : When rotary is used for relative axes
33 in the device, the value indicates the key-code for relative
34 axes measurement in the device. It is a u32 value. Bit[31:16]
35 is for rotary 1, and Bit[15:0] is for rotary 0.
36
37 Examples:
38 keypad: keypad@d4012000 {
39 keypad,num-rows = <3>;
40 keypad,num-columns = <5>;
41 linux,keymap = <0x0000000e /* KEY_BACKSPACE */
42 0x0001006b /* KEY_END */
43 0x00020061 /* KEY_RIGHTCTRL */
44 0x0003000b /* KEY_0 */
45 0x00040002 /* KEY_1 */
46 0x0100008b /* KEY_MENU */
47 0x01010066 /* KEY_HOME */
48 0x010200e7 /* KEY_SEND */
49 0x01030009 /* KEY_8 */
50 0x0104000a /* KEY_9 */
51 0x02000160 /* KEY_OK */
52 0x02010003 /* KEY_2 */
53 0x02020004 /* KEY_3 */
54 0x02030005 /* KEY_4 */
55 0x02040006>; /* KEY_5 */
56 marvell,rotary0 = <0x006c0067>; /* KEY_UP & KEY_DOWN */
57 marvell,direct-key-count = <1>;
58 marvell,direct-key-map = <0x001c>;
59 marvell,debounce-interval = <0x001e001e>;
60 };
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