1*4882a593SmuzhiyunTI-NSPIRE Keypad 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible: Compatible property value should be "ti,nspire-keypad". 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun- reg: Physical base address of the peripheral and length of memory mapped 7*4882a593Smuzhiyun region. 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun- interrupts: The interrupt number for the peripheral. 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun- scan-interval: How often to scan in us. Based on a APB speed of 33MHz, the 12*4882a593Smuzhiyun maximum and minimum delay time is ~2000us and ~500us respectively 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun- row-delay: How long to wait before scanning each row. 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun- clocks: The clock this peripheral is attached to. 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun- linux,keymap: The keymap to use 19*4882a593Smuzhiyun (see Documentation/devicetree/bindings/input/matrix-keymap.txt) 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunOptional properties: 22*4882a593Smuzhiyun- active-low: Specify that the keypad is active low (i.e. logical low signifies 23*4882a593Smuzhiyun a key press). 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunExample: 26*4882a593Smuzhiyun 27*4882a593Smuzhiyuninput { 28*4882a593Smuzhiyun compatible = "ti,nspire-keypad"; 29*4882a593Smuzhiyun reg = <0x900E0000 0x1000>; 30*4882a593Smuzhiyun interrupts = <16>; 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun scan-interval = <1000>; 33*4882a593Smuzhiyun row-delay = <200>; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun clocks = <&apb_pclk>; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun linux,keymap = < 38*4882a593Smuzhiyun 0x0000001c 0x0001001c 0x00040039 39*4882a593Smuzhiyun 0x0005002c 0x00060015 0x0007000b 40*4882a593Smuzhiyun 0x0008000f 0x0100002d 0x01010011 41*4882a593Smuzhiyun 0x0102002f 0x01030004 0x01040016 42*4882a593Smuzhiyun 0x01050014 0x0106001f 0x01070002 43*4882a593Smuzhiyun 0x010a006a 0x02000013 0x02010010 44*4882a593Smuzhiyun 0x02020019 0x02030007 0x02040018 45*4882a593Smuzhiyun 0x02050031 0x02060032 0x02070005 46*4882a593Smuzhiyun 0x02080028 0x0209006c 0x03000026 47*4882a593Smuzhiyun 0x03010025 0x03020024 0x0303000a 48*4882a593Smuzhiyun 0x03040017 0x03050023 0x03060022 49*4882a593Smuzhiyun 0x03070008 0x03080035 0x03090069 50*4882a593Smuzhiyun 0x04000021 0x04010012 0x04020020 51*4882a593Smuzhiyun 0x0404002e 0x04050030 0x0406001e 52*4882a593Smuzhiyun 0x0407000d 0x04080037 0x04090067 53*4882a593Smuzhiyun 0x05010038 0x0502000c 0x0503001b 54*4882a593Smuzhiyun 0x05040034 0x0505001a 0x05060006 55*4882a593Smuzhiyun 0x05080027 0x0509000e 0x050a006f 56*4882a593Smuzhiyun 0x0600002b 0x0602004e 0x06030068 57*4882a593Smuzhiyun 0x06040003 0x0605006d 0x06060009 58*4882a593Smuzhiyun 0x06070001 0x0609000f 0x0708002a 59*4882a593Smuzhiyun 0x0709001d 0x070a0033 >; 60*4882a593Smuzhiyun}; 61