| * Freescale i.MX Keypad Port(KPP) device tree bindings | |
| The KPP is designed to interface with a keypad matrix with 2-point contact | |
| or 3-point contact keys. The KPP is designed to simplify the software task | |
| of scanning a keypad matrix. The KPP is capable of detecting, debouncing, | |
| and decoding one or multiple keys pressed simultaneously on a keypad. | |
| Required SoC Specific Properties: | |
| - compatible: Should be "fsl,<soc>-kpp". | |
| - reg: Physical base address of the KPP and length of memory mapped | |
| region. | |
| - interrupts: The KPP interrupt number to the CPU(s). | |
| - clocks: The clock provided by the SoC to the KPP. Some SoCs use dummy | |
| clock(The clock for the KPP is provided by the SoCs automatically). | |
| Required Board Specific Properties: | |
| - pinctrl-names: The definition can be found at | |
| pinctrl/pinctrl-bindings.txt. | |
| - pinctrl-0: The definition can be found at | |
| pinctrl/pinctrl-bindings.txt. | |
| - linux,keymap: The definition can be found at | |
| bindings/input/matrix-keymap.txt. | |
| Example: | |
| kpp: kpp@73f94000 { | |
| compatible = "fsl,imx51-kpp", "fsl,imx21-kpp"; | |
| reg = <0x73f94000 0x4000>; | |
| interrupts = <60>; | |
| clocks = <&clks 0>; | |
| pinctrl-names = "default"; | |
| pinctrl-0 = <&pinctrl_kpp_1>; | |
| linux,keymap = <0x00000067 /* KEY_UP */ | |
| 0x0001006c /* KEY_DOWN */ | |
| 0x00020072 /* KEY_VOLUMEDOWN */ | |
| 0x00030066 /* KEY_HOME */ | |
| 0x0100006a /* KEY_RIGHT */ | |
| 0x01010069 /* KEY_LEFT */ | |
| 0x0102001c /* KEY_ENTER */ | |
| 0x01030073 /* KEY_VOLUMEUP */ | |
| 0x02000040 /* KEY_F6 */ | |
| 0x02010042 /* KEY_F8 */ | |
| 0x02020043 /* KEY_F9 */ | |
| 0x02030044 /* KEY_F10 */ | |
| 0x0300003b /* KEY_F1 */ | |
| 0x0301003c /* KEY_F2 */ | |
| 0x0302003d /* KEY_F3 */ | |
| 0x03030074>; /* KEY_POWER */ | |
| }; |