Commit | Line | Data |
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062589b1 GF |
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 | }; |