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- TI-NSPIRE Keypad
- Required properties:
- - compatible: Compatible property value should be "ti,nspire-keypad".
- - reg: Physical base address of the peripheral and length of memory mapped
- region.
- - interrupts: The interrupt number for the peripheral.
- - scan-interval: How often to scan in us. Based on a APB speed of 33MHz, the
- maximum and minimum delay time is ~2000us and ~500us respectively
- - row-delay: How long to wait before scanning each row.
- - clocks: The clock this peripheral is attached to.
- - linux,keymap: The keymap to use
- (see Documentation/devicetree/bindings/input/matrix-keymap.txt)
- Optional properties:
- - active-low: Specify that the keypad is active low (i.e. logical low signifies
- a key press).
- Example:
- input {
- compatible = "ti,nspire-keypad";
- reg = <0x900E0000 0x1000>;
- interrupts = <16>;
- scan-interval = <1000>;
- row-delay = <200>;
- clocks = <&apb_pclk>;
- linux,keymap = <
- 0x0000001c 0x0001001c 0x00040039
- 0x0005002c 0x00060015 0x0007000b
- 0x0008000f 0x0100002d 0x01010011
- 0x0102002f 0x01030004 0x01040016
- 0x01050014 0x0106001f 0x01070002
- 0x010a006a 0x02000013 0x02010010
- 0x02020019 0x02030007 0x02040018
- 0x02050031 0x02060032 0x02070005
- 0x02080028 0x0209006c 0x03000026
- 0x03010025 0x03020024 0x0303000a
- 0x03040017 0x03050023 0x03060022
- 0x03070008 0x03080035 0x03090069
- 0x04000021 0x04010012 0x04020020
- 0x0404002e 0x04050030 0x0406001e
- 0x0407000d 0x04080037 0x04090067
- 0x05010038 0x0502000c 0x0503001b
- 0x05040034 0x0505001a 0x05060006
- 0x05080027 0x0509000e 0x050a006f
- 0x0600002b 0x0602004e 0x06030068
- 0x06040003 0x0605006d 0x06060009
- 0x06070001 0x0609000f 0x0708002a
- 0x0709001d 0x070a0033 >;
- };
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