Qualcomm PM8xxx PMIC Keypad
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PROPERTIES
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- compatible:
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Usage: required
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Value type: <string>
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Definition: must be one of:
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"qcom,pm8058-keypad"
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"qcom,pm8921-keypad"
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- reg:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: address of keypad control register
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- interrupts:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: the first interrupt specifies the key sense interrupt
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and the second interrupt specifies the key stuck interrupt.
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The format of the specifier is defined by the binding
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document describing the node's interrupt parent.
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- linux,keymap:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: the linux keymap. More information can be found in
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input/matrix-keymap.txt.
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- linux,keypad-no-autorepeat:
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Usage: optional
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Value type: <bool>
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Definition: don't enable autorepeat feature.
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- wakeup-source:
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Usage: optional
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Value type: <bool>
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Definition: use any event on keypad as wakeup event.
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(Legacy property supported: "linux,keypad-wakeup")
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- keypad,num-rows:
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Usage: required
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Value type: <u32>
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Definition: number of rows in the keymap. More information can be found
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in input/matrix-keymap.txt.
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- keypad,num-columns:
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Usage: required
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Value type: <u32>
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Definition: number of columns in the keymap. More information can be
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found in input/matrix-keymap.txt.
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- debounce:
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Usage: optional
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Value type: <u32>
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Definition: time in microseconds that key must be pressed or release
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for key sense interrupt to trigger.
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- scan-delay:
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Usage: optional
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Value type: <u32>
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Definition: time in microseconds to pause between successive scans
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of the matrix array.
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- row-hold:
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Usage: optional
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Value type: <u32>
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Definition: time in nanoseconds to pause between scans of each row in
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the matrix array.
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EXAMPLE
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keypad@148 {
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compatible = "qcom,pm8921-keypad";
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reg = <0x148>;
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interrupt-parent = <&pmicintc>;
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interrupts = <74 1>, <75 1>;
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linux,keymap = <
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MATRIX_KEY(0, 0, KEY_VOLUMEUP)
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MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
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MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
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MATRIX_KEY(0, 3, KEY_CAMERA)
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>;
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keypad,num-rows = <1>;
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keypad,num-columns = <5>;
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debounce = <15>;
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scan-delay = <32>;
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row-hold = <91500>;
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};
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