Kernel-4.18.0-80.el8_ti,nspire-keypa

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    >;

};