| * Marvell PXA Keypad controller |
| |
| Required Properties |
| - compatible : should be "marvell,pxa27x-keypad" |
| - reg : Address and length of the register set for the device |
| - interrupts : The interrupt for the keypad controller |
| - marvell,debounce-interval : How long time the key will be |
| recognized when it is pressed. It is a u32 value, and bit[31:16] |
| is debounce interval for direct key and bit[15:0] is debounce |
| interval for matrix key. The value is in binary number of 2ms |
| |
| Optional Properties For Matrix Keyes |
| Please refer to matrix-keymap.txt |
| |
| Optional Properties for Direct Keyes |
| - marvell,direct-key-count : How many direct keyes are used. |
| - marvell,direct-key-mask : The mask indicates which keyes |
| are used. If bit[X] of the mask is set, the direct key X |
| is used. |
| - marvell,direct-key-low-active : Direct key status register |
| tells the level of pins that connects to the direct keyes. |
| When this property is set, it means that when the pin level |
| is low, the key is pressed(active). |
| - marvell,direct-key-map : It is a u16 array. Each item indicates |
| the linux key-code for the direct key. |
| |
| Optional Properties For Rotary |
| - marvell,rotary0 : It is a u32 value. Bit[31:16] is the |
| linux key-code for rotary up. Bit[15:0] is the linux key-code |
| for rotary down. It is for rotary 0. |
| - marvell,rotary1 : Same as marvell,rotary0. It is for rotary 1. |
| - marvell,rotary-rel-key : When rotary is used for relative axes |
| in the device, the value indicates the key-code for relative |
| axes measurement in the device. It is a u32 value. Bit[31:16] |
| is for rotary 1, and Bit[15:0] is for rotary 0. |
| |
| Examples: |
| keypad: keypad@d4012000 { |
| keypad,num-rows = <3>; |
| keypad,num-columns = <5>; |
| linux,keymap = <0x0000000e /* KEY_BACKSPACE */ |
| 0x0001006b /* KEY_END */ |
| 0x00020061 /* KEY_RIGHTCTRL */ |
| 0x0003000b /* KEY_0 */ |
| 0x00040002 /* KEY_1 */ |
| 0x0100008b /* KEY_MENU */ |
| 0x01010066 /* KEY_HOME */ |
| 0x010200e7 /* KEY_SEND */ |
| 0x01030009 /* KEY_8 */ |
| 0x0104000a /* KEY_9 */ |
| 0x02000160 /* KEY_OK */ |
| 0x02010003 /* KEY_2 */ |
| 0x02020004 /* KEY_3 */ |
| 0x02030005 /* KEY_4 */ |
| 0x02040006>; /* KEY_5 */ |
| marvell,rotary0 = <0x006c0067>; /* KEY_UP & KEY_DOWN */ |
| marvell,direct-key-count = <1>; |
| marvell,direct-key-map = <0x001c>; |
| marvell,debounce-interval = <0x001e001e>; |
| }; |
