input/touchscreen/ti%2Cam3359-tsc.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/touchscreen/ti,am3359-tsc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI AM3359 Touchscreen controller
10   - Miquel Raynal <miquel.raynal@bootlin.com>
14     const: ti,am3359-tsc
22   ti,x-plate-resistance:
26   ti,coordinate-readouts:
31       available. The remaining 4 can be used by the ADC.
36   ti,wire-config:
38       wires on touchscreen. We need to provide an 8-bit number where the
43     $ref: /schemas/types.yaml#/definitions/uint32-array
47   ti,charge-delay:
48     description: Length of touch screen charge delay step in terms of ADC clock
49       cycles. Charge delay value should be large in order to avoid false pen-up
51       kept as low as possible, while avoiding false pen-up event. Start from a
52       lower value, say 0x400, and increase value until false pen-up events are
53       avoided. The pen-up detection happens immediately after the charge step,
59   - compatible
60   - ti,wires
61   - ti,x-plate-resistance
62   - ti,coordinate-readouts
63   - ti,wire-config
68   - |
70         compatible = "ti,am3359-tsc";
72         ti,x-plate-resistance = <200>;
73         ti,coordinate-readouts = <5>;
74         ti,wire-config = <0x00 0x11 0x22 0x33>;
75         ti,charge-delay = <0x400>;