Qualcomm PM8xxx PMIC Keypad

PROPERTIES

- compatible:
	Usage: required
	Value type: <string>
	Definition: must be one of:
		    "qcom,pm8058-keypad"
		    "qcom,pm8921-keypad"

- reg:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: address of keypad control register

- interrupts:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: the first interrupt specifies the key sense interrupt
		    and the second interrupt specifies the key stuck interrupt.
		    The format of the specifier is defined by the binding
		    document describing the node's interrupt parent.

- linux,keymap:
	Usage: required
	Value type: <prop-encoded-array>
	Definition: the linux keymap. More information can be found in
		    input/matrix-keymap.txt.

- linux,keypad-no-autorepeat:
	Usage: optional
	Value type: <bool>
	Definition: don't enable autorepeat feature.

- linux,keypad-wakeup:
	Usage: optional
	Value type: <bool>
	Definition: use any event on keypad as wakeup event.

- keypad,num-rows:
	Usage: required
	Value type: <u32>
	Definition: number of rows in the keymap. More information can be found
		    in input/matrix-keymap.txt.

- keypad,num-columns:
	Usage: required
	Value type: <u32>
	Definition: number of columns in the keymap. More information can be
		    found in input/matrix-keymap.txt.

- debounce:
	Usage: optional
	Value type: <u32>
	Definition: time in microseconds that key must be pressed or release
		    for key sense interrupt to trigger.

- scan-delay:
	Usage: optional
	Value type: <u32>
	Definition: time in microseconds to pause between successive scans
		    of the matrix array.

- row-hold:
	Usage: optional
	Value type: <u32>
	Definition: time in nanoseconds to pause between scans of each row in
		    the matrix array.

EXAMPLE

	keypad@148 {
		compatible = "qcom,pm8921-keypad";
		reg = <0x148>;
		interrupt-parent = <&pmicintc>;
		interrupts = <74 1>, <75 1>;
		linux,keymap = <
			MATRIX_KEY(0, 0, KEY_VOLUMEUP)
			MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
			MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
			MATRIX_KEY(0, 3, KEY_CAMERA)
			>;
		keypad,num-rows = <1>;
		keypad,num-columns = <5>;
		debounce = <15>;
		scan-delay = <32>;
		row-hold = <91500>;
	};