1 * Freescale i.MX Keypad Port(KPP) device tree bindings
3 The KPP is designed to interface with a keypad matrix with 2-point contact
4 or 3-point contact keys. The KPP is designed to simplify the software task
5 of scanning a keypad matrix. The KPP is capable of detecting, debouncing,
6 and decoding one or multiple keys pressed simultaneously on a keypad.
8 Required SoC Specific Properties:
9 - compatible: Should be "fsl,<soc>-kpp".
11 - reg: Physical base address of the KPP and length of memory mapped
14 - interrupts: The KPP interrupt number to the CPU(s).
16 - clocks: The clock provided by the SoC to the KPP. Some SoCs use dummy
17 clock(The clock for the KPP is provided by the SoCs automatically).
19 Required Board Specific Properties:
20 - pinctrl-names: The definition can be found at
21 pinctrl/pinctrl-bindings.txt.
23 - pinctrl-0: The definition can be found at
24 pinctrl/pinctrl-bindings.txt.
26 - linux,keymap: The definition can be found at
27 bindings/input/matrix-keymap.txt.
31 compatible = "fsl,imx51-kpp", "fsl,imx21-kpp";
32 reg = <0x73f94000 0x4000>;
35 pinctrl-names = "default";
36 pinctrl-0 = <&pinctrl_kpp_1>;
37 linux,keymap = <0x00000067 /* KEY_UP */
38 0x0001006c /* KEY_DOWN */
39 0x00020072 /* KEY_VOLUMEDOWN */
40 0x00030066 /* KEY_HOME */
41 0x0100006a /* KEY_RIGHT */
42 0x01010069 /* KEY_LEFT */
43 0x0102001c /* KEY_ENTER */
44 0x01030073 /* KEY_VOLUMEUP */
45 0x02000040 /* KEY_F6 */
46 0x02010042 /* KEY_F8 */
47 0x02020043 /* KEY_F9 */
48 0x02030044 /* KEY_F10 */
49 0x0300003b /* KEY_F1 */
50 0x0301003c /* KEY_F2 */
51 0x0302003d /* KEY_F3 */
52 0x03030074>; /* KEY_POWER */