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- * 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) >;
- };
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