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| -rw-r--r-- | Documentation/devicetree/bindings/input/st-keyscan.txt | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/st-keyscan.txt b/Documentation/devicetree/bindings/input/st-keyscan.txt new file mode 100644 index 000000000..51eb428e5 --- /dev/null +++ b/Documentation/devicetree/bindings/input/st-keyscan.txt @@ -0,0 +1,60 @@ +* 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) >; + }; |