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| 1 | +Qualcomm PM8xxx PMIC Keypad |
| 2 | + |
| 3 | +PROPERTIES |
| 4 | + |
| 5 | +- compatible: |
| 6 | + Usage: required |
| 7 | + Value type: <string> |
| 8 | + Definition: must be one of: |
| 9 | + "qcom,pm8058-keypad" |
| 10 | + "qcom,pm8921-keypad" |
| 11 | + |
| 12 | +- reg: |
| 13 | + Usage: required |
| 14 | + Value type: <prop-encoded-array> |
| 15 | + Definition: address of keypad control register |
| 16 | + |
| 17 | +- interrupts: |
| 18 | + Usage: required |
| 19 | + Value type: <prop-encoded-array> |
| 20 | + Definition: the first interrupt specifies the key sense interrupt |
| 21 | + and the second interrupt specifies the key stuck interrupt. |
| 22 | + The format of the specifier is defined by the binding |
| 23 | + document describing the node's interrupt parent. |
| 24 | + |
| 25 | +- linux,keymap: |
| 26 | + Usage: required |
| 27 | + Value type: <prop-encoded-array> |
| 28 | + Definition: the linux keymap. More information can be found in |
| 29 | + input/matrix-keymap.txt. |
| 30 | + |
| 31 | +- linux,keypad-no-autorepeat: |
| 32 | + Usage: optional |
| 33 | + Value type: <bool> |
| 34 | + Definition: don't enable autorepeat feature. |
| 35 | + |
| 36 | +- linux,keypad-wakeup: |
| 37 | + Usage: optional |
| 38 | + Value type: <bool> |
| 39 | + Definition: use any event on keypad as wakeup event. |
| 40 | + |
| 41 | +- keypad,num-rows: |
| 42 | + Usage: required |
| 43 | + Value type: <u32> |
| 44 | + Definition: number of rows in the keymap. More information can be found |
| 45 | + in input/matrix-keymap.txt. |
| 46 | + |
| 47 | +- keypad,num-columns: |
| 48 | + Usage: required |
| 49 | + Value type: <u32> |
| 50 | + Definition: number of columns in the keymap. More information can be |
| 51 | + found in input/matrix-keymap.txt. |
| 52 | + |
| 53 | +- debounce: |
| 54 | + Usage: optional |
| 55 | + Value type: <u32> |
| 56 | + Definition: time in microseconds that key must be pressed or release |
| 57 | + for key sense interrupt to trigger. |
| 58 | + |
| 59 | +- scan-delay: |
| 60 | + Usage: optional |
| 61 | + Value type: <u32> |
| 62 | + Definition: time in microseconds to pause between successive scans |
| 63 | + of the matrix array. |
| 64 | + |
| 65 | +- row-hold: |
| 66 | + Usage: optional |
| 67 | + Value type: <u32> |
| 68 | + Definition: time in nanoseconds to pause between scans of each row in |
| 69 | + the matrix array. |
| 70 | + |
| 71 | +EXAMPLE |
| 72 | + |
| 73 | + keypad@148 { |
| 74 | + compatible = "qcom,pm8921-keypad"; |
| 75 | + reg = <0x148>; |
| 76 | + interrupt-parent = <&pmicintc>; |
| 77 | + interrupts = <74 1>, <75 1>; |
| 78 | + linux,keymap = < |
| 79 | + MATRIX_KEY(0, 0, KEY_VOLUMEUP) |
| 80 | + MATRIX_KEY(0, 1, KEY_VOLUMEDOWN) |
| 81 | + MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS) |
| 82 | + MATRIX_KEY(0, 3, KEY_CAMERA) |
| 83 | + >; |
| 84 | + keypad,num-rows = <1>; |
| 85 | + keypad,num-columns = <5>; |
| 86 | + debounce = <15>; |
| 87 | + scan-delay = <32>; |
| 88 | + row-hold = <91500>; |
| 89 | + }; |
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