Commit 7d3b0d9e authored by Cong Yang's avatar Cong Yang Committed by Benjamin Tissoires

dt-bindings: input: i2c-hid: Introduce Ilitek ili9882t

The ili9882t touch screen chip same as Elan eKTH6915 controller
has a reset gpio. The difference is that ili9882t needs to use
vccio-supply instead of vcc33-supply. Doug's series[1] allows panels
and touchscreens to power on/off together, let's add a phandle for this.

[1]: https://lore.kernel.org/r/20230607215224.2067679-1-dianders@chromium.orgReviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarCong Yang <yangcong5@huaqin.corp-partner.google.com>
Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230802071947.1683318-2-yangcong5@huaqin.corp-partner.google.comSigned-off-by: default avatarBenjamin Tissoires <bentiss@kernel.org>
parent 1d754604
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/ilitek,ili9882t.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Ilitek ili9882t touchscreen controller
maintainers:
- Cong Yang <yangcong5@huaqin.corp-partner.google.com>
description:
Supports the Ilitek ili9882t touchscreen controller.
This touchscreen controller uses the i2c-hid protocol with a reset GPIO.
allOf:
- $ref: /schemas/input/touchscreen/touchscreen.yaml#
properties:
compatible:
const: ilitek,ili9882t
reg:
const: 0x41
interrupts:
maxItems: 1
panel: true
reset-gpios:
maxItems: 1
description: Reset GPIO.
vccio-supply:
description: The 1.8V supply to the touchscreen.
required:
- compatible
- reg
- interrupts
- panel
- vccio-supply
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen: touchscreen@41 {
compatible = "ilitek,ili9882t";
reg = <0x41>;
interrupt-parent = <&pio>;
interrupts = <12 IRQ_TYPE_LEVEL_LOW>;
panel = <&panel>;
reset-gpios = <&pio 60 GPIO_ACTIVE_LOW>;
vccio-supply = <&mt6366_vio18_reg>;
};
};
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