xref: /freebsd/sys/contrib/device-tree/Bindings/input/touchscreen/tsc2005.txt (revision ebacd8013fe5f7fdf9f6a5b286f6680dd2891036)
1* Texas Instruments tsc2004 and tsc2005 touchscreen controllers
2
3Required properties:
4 - compatible		      : "ti,tsc2004" or "ti,tsc2005"
5 - reg			      : Device address
6 - interrupts		      : IRQ specifier
7 - spi-max-frequency	      : Maximum SPI clocking speed of the device
8			        (for tsc2005)
9
10Optional properties:
11 - vio-supply		      : Regulator specifier
12 - reset-gpios		      : GPIO specifier for the controller reset line
13 - ti,x-plate-ohms	      : integer, resistance of the touchscreen's X plates
14				in ohm (defaults to 280)
15 - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
16				the configured time (in milli seconds), the driver
17				will reset it. This is disabled by default.
18 - properties defined in touchscreen.txt
19
20Example:
21
22&i2c3 {
23	tsc2004@48 {
24		compatible = "ti,tsc2004";
25		reg = <0x48>;
26		vio-supply = <&vio>;
27
28		reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
29		interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
30
31		touchscreen-fuzz-x = <4>;
32		touchscreen-fuzz-y = <7>;
33		touchscreen-fuzz-pressure = <2>;
34		touchscreen-size-x = <4096>;
35		touchscreen-size-y = <4096>;
36		touchscreen-max-pressure = <2048>;
37
38		ti,x-plate-ohms = <280>;
39		ti,esd-recovery-timeout-ms = <8000>;
40	};
41}
42
43&mcspi1 {
44	tsc2005@0 {
45		compatible = "ti,tsc2005";
46		spi-max-frequency = <6000000>;
47		reg = <0>;
48
49		vio-supply = <&vio>;
50
51		reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */
52		interrupts-extended = <&gpio4 4 IRQ_TYPE_EDGE_RISING>; /* 100 */
53
54		touchscreen-fuzz-x = <4>;
55		touchscreen-fuzz-y = <7>;
56		touchscreen-fuzz-pressure = <2>;
57		touchscreen-size-x = <4096>;
58		touchscreen-size-y = <4096>;
59		touchscreen-max-pressure = <2048>;
60
61		ti,x-plate-ohms = <280>;
62		ti,esd-recovery-timeout-ms = <8000>;
63	};
64}
65