| * ST Keyscan controller Device Tree bindings | |
| The ST keyscan controller Device Tree binding is based on the | |
| matrix-keymap. | |
| Required properties: | |
| - compatible: "st,sti-keyscan" | |
| - reg: Register base address and size of st-keyscan controller. | |
| - interrupts: Interrupt number for the st-keyscan controller. | |
| - clocks: Must contain one entry, for the module clock. | |
| See ../clocks/clock-bindings.txt for details. | |
| - pinctrl: Should specify pin control groups used for this controller. | |
| See ../pinctrl/pinctrl-bindings.txt for details. | |
| - linux,keymap: The keymap for keys as described in the binding document | |
| devicetree/bindings/input/matrix-keymap.txt. | |
| - keypad,num-rows: Number of row lines connected to the keypad controller. | |
| - keypad,num-columns: Number of column lines connected to the keypad | |
| controller. | |
| Optional property: | |
| - st,debounce_us: Debouncing interval time in microseconds | |
| Example: | |
| keyscan: keyscan@fe4b0000 { | |
| compatible = "st,sti-keyscan"; | |
| reg = <0xfe4b0000 0x2000>; | |
| interrupts = <GIC_SPI 212 IRQ_TYPE_NONE>; | |
| clocks = <&CLK_SYSIN>; | |
| pinctrl-names = "default"; | |
| pinctrl-0 = <&pinctrl_keyscan>; | |
| keypad,num-rows = <4>; | |
| keypad,num-columns = <4>; | |
| st,debounce_us = <5000>; | |
| linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_F13) | |
| MATRIX_KEY(0x00, 0x01, KEY_F9) | |
| MATRIX_KEY(0x00, 0x02, KEY_F5) | |
| MATRIX_KEY(0x00, 0x03, KEY_F1) | |
| MATRIX_KEY(0x01, 0x00, KEY_F14) | |
| MATRIX_KEY(0x01, 0x01, KEY_F10) | |
| MATRIX_KEY(0x01, 0x02, KEY_F6) | |
| MATRIX_KEY(0x01, 0x03, KEY_F2) | |
| MATRIX_KEY(0x02, 0x00, KEY_F15) | |
| MATRIX_KEY(0x02, 0x01, KEY_F11) | |
| MATRIX_KEY(0x02, 0x02, KEY_F7) | |
| MATRIX_KEY(0x02, 0x03, KEY_F3) | |
| MATRIX_KEY(0x03, 0x00, KEY_F16) | |
| MATRIX_KEY(0x03, 0x01, KEY_F12) | |
| MATRIX_KEY(0x03, 0x02, KEY_F8) | |
| MATRIX_KEY(0x03, 0x03, KEY_F4) >; | |
| }; |