| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Marvell PXA Keypad controller |
| 2 | |
| 3 | Required Properties |
| 4 | - compatible : should be "marvell,pxa27x-keypad" |
| 5 | - reg : Address and length of the register set for the device |
| 6 | - interrupts : The interrupt for the keypad controller |
| 7 | - marvell,debounce-interval : How long time the key will be |
| 8 | recognized when it is pressed. It is a u32 value, and bit[31:16] |
| 9 | is debounce interval for direct key and bit[15:0] is debounce |
| 10 | interval for matrix key. The value is in binary number of 2ms |
| 11 | |
| 12 | Optional Properties For Matrix Keyes |
| 13 | Please refer to matrix-keymap.txt |
| 14 | |
| 15 | Optional Properties for Direct Keyes |
| 16 | - marvell,direct-key-count : How many direct keyes are used. |
| 17 | - marvell,direct-key-mask : The mask indicates which keyes |
| 18 | are used. If bit[X] of the mask is set, the direct key X |
| 19 | is used. |
| 20 | - marvell,direct-key-low-active : Direct key status register |
| 21 | tells the level of pins that connects to the direct keyes. |
| 22 | When this property is set, it means that when the pin level |
| 23 | is low, the key is pressed(active). |
| 24 | - marvell,direct-key-map : It is a u16 array. Each item indicates |
| 25 | the linux key-code for the direct key. |
| 26 | |
| 27 | Optional Properties For Rotary |
| 28 | - marvell,rotary0 : It is a u32 value. Bit[31:16] is the |
| 29 | linux key-code for rotary up. Bit[15:0] is the linux key-code |
| 30 | for rotary down. It is for rotary 0. |
| 31 | - marvell,rotary1 : Same as marvell,rotary0. It is for rotary 1. |
| 32 | - marvell,rotary-rel-key : When rotary is used for relative axes |
| 33 | in the device, the value indicates the key-code for relative |
| 34 | axes measurement in the device. It is a u32 value. Bit[31:16] |
| 35 | is for rotary 1, and Bit[15:0] is for rotary 0. |
| 36 | |
| 37 | Examples: |
| 38 | keypad: keypad@d4012000 { |
| 39 | keypad,num-rows = <3>; |
| 40 | keypad,num-columns = <5>; |
| 41 | linux,keymap = <0x0000000e /* KEY_BACKSPACE */ |
| 42 | 0x0001006b /* KEY_END */ |
| 43 | 0x00020061 /* KEY_RIGHTCTRL */ |
| 44 | 0x0003000b /* KEY_0 */ |
| 45 | 0x00040002 /* KEY_1 */ |
| 46 | 0x0100008b /* KEY_MENU */ |
| 47 | 0x01010066 /* KEY_HOME */ |
| 48 | 0x010200e7 /* KEY_SEND */ |
| 49 | 0x01030009 /* KEY_8 */ |
| 50 | 0x0104000a /* KEY_9 */ |
| 51 | 0x02000160 /* KEY_OK */ |
| 52 | 0x02010003 /* KEY_2 */ |
| 53 | 0x02020004 /* KEY_3 */ |
| 54 | 0x02030005 /* KEY_4 */ |
| 55 | 0x02040006>; /* KEY_5 */ |
| 56 | marvell,rotary0 = <0x006c0067>; /* KEY_UP & KEY_DOWN */ |
| 57 | marvell,direct-key-count = <1>; |
| 58 | marvell,direct-key-map = <0x001c>; |
| 59 | marvell,debounce-interval = <0x001e001e>; |
| 60 | }; |