| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Goodix GT7375P touchscreen |
| 8 | |
| 9 | maintainers: |
| 10 | - Douglas Anderson <dianders@chromium.org> |
| 11 | |
| 12 | description: |
| 13 | Supports the Goodix GT7375P touchscreen. |
| 14 | This touchscreen uses the i2c-hid protocol but has some non-standard |
| 15 | power sequencing required. |
| 16 | |
| 17 | allOf: |
| 18 | - $ref: /schemas/input/touchscreen/touchscreen.yaml# |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | oneOf: |
| 23 | - const: goodix,gt7375p |
| 24 | - items: |
| 25 | - const: goodix,gt7986u |
| 26 | - const: goodix,gt7375p |
| 27 | |
| 28 | reg: |
| 29 | enum: |
| 30 | - 0x5d |
| 31 | - 0x14 |
| 32 | |
| 33 | interrupts: |
| 34 | maxItems: 1 |
| 35 | |
| 36 | panel: true |
| 37 | |
| 38 | reset-gpios: |
| 39 | true |
| 40 | |
| 41 | vdd-supply: |
| 42 | description: The 3.3V supply to the touchscreen. |
| 43 | |
| 44 | mainboard-vddio-supply: |
| 45 | description: |
| 46 | The supply on the main board needed to power up IO signals going |
| 47 | to the touchscreen. This supply need not go to the touchscreen |
| 48 | itself as long as it allows the main board to make signals compatible |
| 49 | with what the touchscreen is expecting for its IO rails. |
| 50 | |
| 51 | goodix,no-reset-during-suspend: |
| 52 | description: |
| 53 | Set this to true to enforce the driver to not assert the reset GPIO |
| 54 | during suspend. |
| 55 | Due to potential touchscreen hardware flaw, back-powering could happen in |
| 56 | suspend if the power supply is on and with active-low reset GPIO asserted. |
| 57 | This property is used to avoid the back-powering issue. |
| 58 | type: boolean |
| 59 | |
| 60 | required: |
| 61 | - compatible |
| 62 | - reg |
| 63 | - interrupts |
| 64 | - reset-gpios |
| 65 | - vdd-supply |
| 66 | |
| 67 | additionalProperties: false |
| 68 | |
| 69 | examples: |
| 70 | - | |
| 71 | #include <dt-bindings/clock/qcom,rpmh.h> |
| 72 | #include <dt-bindings/gpio/gpio.h> |
| 73 | #include <dt-bindings/interrupt-controller/irq.h> |
| 74 | |
| 75 | i2c { |
| 76 | #address-cells = <1>; |
| 77 | #size-cells = <0>; |
| 78 | |
| 79 | ap_ts: touchscreen@5d { |
| 80 | compatible = "goodix,gt7375p"; |
| 81 | reg = <0x5d>; |
| 82 | |
| 83 | interrupt-parent = <&tlmm>; |
| 84 | interrupts = <9 IRQ_TYPE_LEVEL_LOW>; |
| 85 | |
| 86 | reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>; |
| 87 | vdd-supply = <&pp3300_ts>; |
| 88 | }; |
| 89 | }; |