| * 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 */ |
| }; |
