1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/input/goodix,gt7375p.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Goodix GT7375P touchscreen 8 9maintainers: 10 - Douglas Anderson <dianders@chromium.org> 11 12description: 13 Supports the Goodix GT7375P touchscreen. 14 This touchscreen uses the i2c-hid protocol but has some non-standard 15 power sequencing required. 16 17properties: 18 compatible: 19 oneOf: 20 - const: goodix,gt7375p 21 - items: 22 - const: goodix,gt7986u 23 - const: goodix,gt7375p 24 25 reg: 26 enum: 27 - 0x5d 28 - 0x14 29 30 interrupts: 31 maxItems: 1 32 33 reset-gpios: 34 true 35 36 vdd-supply: 37 description: The 3.3V supply to the touchscreen. 38 39 mainboard-vddio-supply: 40 description: 41 The supply on the main board needed to power up IO signals going 42 to the touchscreen. This supply need not go to the touchscreen 43 itself as long as it allows the main board to make signals compatible 44 with what the touchscreen is expecting for its IO rails. 45 46 goodix,no-reset-during-suspend: 47 description: 48 Set this to true to enforce the driver to not assert the reset GPIO 49 during suspend. 50 Due to potential touchscreen hardware flaw, back-powering could happen in 51 suspend if the power supply is on and with active-low reset GPIO asserted. 52 This property is used to avoid the back-powering issue. 53 type: boolean 54 55required: 56 - compatible 57 - reg 58 - interrupts 59 - reset-gpios 60 - vdd-supply 61 62additionalProperties: false 63 64examples: 65 - | 66 #include <dt-bindings/clock/qcom,rpmh.h> 67 #include <dt-bindings/gpio/gpio.h> 68 #include <dt-bindings/interrupt-controller/irq.h> 69 70 i2c { 71 #address-cells = <1>; 72 #size-cells = <0>; 73 74 ap_ts: touchscreen@5d { 75 compatible = "goodix,gt7375p"; 76 reg = <0x5d>; 77 78 interrupt-parent = <&tlmm>; 79 interrupts = <9 IRQ_TYPE_LEVEL_LOW>; 80 81 reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>; 82 vdd-supply = <&pp3300_ts>; 83 }; 84 }; 85