Based on kernel version 6.8
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | * 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) >; }; |