0001 TI-NSPIRE Keypad
0002
0003 Required properties:
0004 - compatible: Compatible property value should be "ti,nspire-keypad".
0005
0006 - reg: Physical base address of the peripheral and length of memory mapped
0007 region.
0008
0009 - interrupts: The interrupt number for the peripheral.
0010
0011 - scan-interval: How often to scan in us. Based on a APB speed of 33MHz, the
0012 maximum and minimum delay time is ~2000us and ~500us respectively
0013
0014 - row-delay: How long to wait before scanning each row.
0015
0016 - clocks: The clock this peripheral is attached to.
0017
0018 - linux,keymap: The keymap to use
0019 (see Documentation/devicetree/bindings/input/matrix-keymap.txt)
0020
0021 Optional properties:
0022 - active-low: Specify that the keypad is active low (i.e. logical low signifies
0023 a key press).
0024
0025 Example:
0026
0027 input {
0028 compatible = "ti,nspire-keypad";
0029 reg = <0x900E0000 0x1000>;
0030 interrupts = <16>;
0031
0032 scan-interval = <1000>;
0033 row-delay = <200>;
0034
0035 clocks = <&apb_pclk>;
0036
0037 linux,keymap = <
0038 0x0000001c 0x0001001c 0x00040039
0039 0x0005002c 0x00060015 0x0007000b
0040 0x0008000f 0x0100002d 0x01010011
0041 0x0102002f 0x01030004 0x01040016
0042 0x01050014 0x0106001f 0x01070002
0043 0x010a006a 0x02000013 0x02010010
0044 0x02020019 0x02030007 0x02040018
0045 0x02050031 0x02060032 0x02070005
0046 0x02080028 0x0209006c 0x03000026
0047 0x03010025 0x03020024 0x0303000a
0048 0x03040017 0x03050023 0x03060022
0049 0x03070008 0x03080035 0x03090069
0050 0x04000021 0x04010012 0x04020020
0051 0x0404002e 0x04050030 0x0406001e
0052 0x0407000d 0x04080037 0x04090067
0053 0x05010038 0x0502000c 0x0503001b
0054 0x05040034 0x0505001a 0x05060006
0055 0x05080027 0x0509000e 0x050a006f
0056 0x0600002b 0x0602004e 0x06030068
0057 0x06040003 0x0605006d 0x06060009
0058 0x06070001 0x0609000f 0x0708002a
0059 0x0709001d 0x070a0033 >;
0060 };
