| Stephen Boyd | 86ea5e6 | 2014-03-29 12:35:35 -0700 | [diff] [blame] | 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 | }; |