1*fc4f3146SDaniel TangTI-NSPIRE Keypad 2*fc4f3146SDaniel Tang 3*fc4f3146SDaniel TangRequired properties: 4*fc4f3146SDaniel Tang- compatible: Compatible property value should be "ti,nspire-keypad". 5*fc4f3146SDaniel Tang 6*fc4f3146SDaniel Tang- reg: Physical base address of the peripheral and length of memory mapped 7*fc4f3146SDaniel Tang region. 8*fc4f3146SDaniel Tang 9*fc4f3146SDaniel Tang- interrupts: The interrupt number for the peripheral. 10*fc4f3146SDaniel Tang 11*fc4f3146SDaniel Tang- scan-interval: How often to scan in us. Based on a APB speed of 33MHz, the 12*fc4f3146SDaniel Tang maximum and minimum delay time is ~2000us and ~500us respectively 13*fc4f3146SDaniel Tang 14*fc4f3146SDaniel Tang- row-delay: How long to wait before scanning each row. 15*fc4f3146SDaniel Tang 16*fc4f3146SDaniel Tang- clocks: The clock this peripheral is attached to. 17*fc4f3146SDaniel Tang 18*fc4f3146SDaniel Tang- linux,keymap: The keymap to use 19*fc4f3146SDaniel Tang (see Documentation/devicetree/bindings/input/matrix-keymap.txt) 20*fc4f3146SDaniel Tang 21*fc4f3146SDaniel TangOptional properties: 22*fc4f3146SDaniel Tang- active-low: Specify that the keypad is active low (i.e. logical low signifies 23*fc4f3146SDaniel Tang a key press). 24*fc4f3146SDaniel Tang 25*fc4f3146SDaniel TangExample: 26*fc4f3146SDaniel Tang 27*fc4f3146SDaniel Tanginput { 28*fc4f3146SDaniel Tang compatible = "ti,nspire-keypad"; 29*fc4f3146SDaniel Tang reg = <0x900E0000 0x1000>; 30*fc4f3146SDaniel Tang interrupts = <16>; 31*fc4f3146SDaniel Tang 32*fc4f3146SDaniel Tang scan-interval = <1000>; 33*fc4f3146SDaniel Tang row-delay = <200>; 34*fc4f3146SDaniel Tang 35*fc4f3146SDaniel Tang clocks = <&apb_pclk>; 36*fc4f3146SDaniel Tang 37*fc4f3146SDaniel Tang linux,keymap = < 38*fc4f3146SDaniel Tang 0x0000001c 0x0001001c 0x00040039 39*fc4f3146SDaniel Tang 0x0005002c 0x00060015 0x0007000b 40*fc4f3146SDaniel Tang 0x0008000f 0x0100002d 0x01010011 41*fc4f3146SDaniel Tang 0x0102002f 0x01030004 0x01040016 42*fc4f3146SDaniel Tang 0x01050014 0x0106001f 0x01070002 43*fc4f3146SDaniel Tang 0x010a006a 0x02000013 0x02010010 44*fc4f3146SDaniel Tang 0x02020019 0x02030007 0x02040018 45*fc4f3146SDaniel Tang 0x02050031 0x02060032 0x02070005 46*fc4f3146SDaniel Tang 0x02080028 0x0209006c 0x03000026 47*fc4f3146SDaniel Tang 0x03010025 0x03020024 0x0303000a 48*fc4f3146SDaniel Tang 0x03040017 0x03050023 0x03060022 49*fc4f3146SDaniel Tang 0x03070008 0x03080035 0x03090069 50*fc4f3146SDaniel Tang 0x04000021 0x04010012 0x04020020 51*fc4f3146SDaniel Tang 0x0404002e 0x04050030 0x0406001e 52*fc4f3146SDaniel Tang 0x0407000d 0x04080037 0x04090067 53*fc4f3146SDaniel Tang 0x05010038 0x0502000c 0x0503001b 54*fc4f3146SDaniel Tang 0x05040034 0x0505001a 0x05060006 55*fc4f3146SDaniel Tang 0x05080027 0x0509000e 0x050a006f 56*fc4f3146SDaniel Tang 0x0600002b 0x0602004e 0x06030068 57*fc4f3146SDaniel Tang 0x06040003 0x0605006d 0x06060009 58*fc4f3146SDaniel Tang 0x06070001 0x0609000f 0x0708002a 59*fc4f3146SDaniel Tang 0x0709001d 0x070a0033 >; 60*fc4f3146SDaniel Tang}; 61