| 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/touchscreen/zinitix,bt400.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Zinitix BT4xx and BT5xx series touchscreen controller |
| 8 | |
| 9 | description: The Zinitix BT4xx and BT5xx series of touchscreen controllers |
| 10 | are Korea-produced touchscreens with embedded microcontrollers. The |
| 11 | BT4xx series was produced 2010-2013 and the BT5xx series 2013-2014. |
| 12 | |
| 13 | maintainers: |
| 14 | - Michael Srba <Michael.Srba@seznam.cz> |
| 15 | - Linus Walleij <linus.walleij@linaro.org> |
| 16 | |
| 17 | allOf: |
| 18 | - $ref: touchscreen.yaml# |
| 19 | |
| 20 | properties: |
| 21 | $nodename: |
| 22 | pattern: "^touchscreen(@.*)?$" |
| 23 | |
| 24 | compatible: |
| 25 | enum: |
| 26 | - zinitix,bt402 |
| 27 | - zinitix,bt403 |
| 28 | - zinitix,bt404 |
| 29 | - zinitix,bt412 |
| 30 | - zinitix,bt413 |
| 31 | - zinitix,bt431 |
| 32 | - zinitix,bt432 |
| 33 | - zinitix,bt531 |
| 34 | - zinitix,bt532 |
| 35 | - zinitix,bt538 |
| 36 | - zinitix,bt541 |
| 37 | - zinitix,bt548 |
| 38 | - zinitix,bt554 |
| 39 | - zinitix,at100 |
| 40 | |
| 41 | reg: |
| 42 | description: I2C address on the I2C bus |
| 43 | |
| 44 | clock-frequency: |
| 45 | description: I2C client clock frequency, defined for host when using |
| 46 | the device on the I2C bus |
| 47 | minimum: 0 |
| 48 | maximum: 400000 |
| 49 | |
| 50 | interrupts: |
| 51 | description: Interrupt to host |
| 52 | maxItems: 1 |
| 53 | |
| 54 | vcca-supply: |
| 55 | description: Analog power supply regulator on the VCCA pin |
| 56 | |
| 57 | vdd-supply: |
| 58 | description: Digital power supply regulator on the VDD pin. |
| 59 | In older device trees this can be the accidental name for the analog |
| 60 | supply on the VCCA pin, and in that case the deprecated vddo-supply is |
| 61 | used for the digital power supply. |
| 62 | |
| 63 | vddo-supply: |
| 64 | description: Deprecated name for the digital power supply, use vdd-supply |
| 65 | as this reflects the real name of the pin. If this supply is present, |
| 66 | the vdd-supply represents VCCA instead of VDD. Implementers should first |
| 67 | check for this property, and if it is present assume that the vdd-supply |
| 68 | represents the analog supply. |
| 69 | deprecated: true |
| 70 | |
| 71 | reset-gpios: |
| 72 | description: Reset line for the touchscreen, should be tagged |
| 73 | as GPIO_ACTIVE_LOW |
| 74 | |
| 75 | zinitix,mode: |
| 76 | description: Mode of reporting touch points. Some modes may not work |
| 77 | with a particular ts firmware for unknown reasons. Available modes are |
| 78 | 1 and 2. Mode 2 is the default and preferred. |
| 79 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 80 | enum: [1, 2] |
| 81 | |
| 82 | touchscreen-size-x: true |
| 83 | touchscreen-size-y: true |
| 84 | touchscreen-fuzz-x: true |
| 85 | touchscreen-fuzz-y: true |
| 86 | |
| 87 | additionalProperties: false |
| 88 | |
| 89 | required: |
| 90 | - compatible |
| 91 | - reg |
| 92 | - interrupts |
| 93 | - touchscreen-size-x |
| 94 | - touchscreen-size-y |
| 95 | |
| 96 | examples: |
| 97 | - | |
| 98 | #include <dt-bindings/interrupt-controller/irq.h> |
| 99 | #include <dt-bindings/gpio/gpio.h> |
| 100 | i2c { |
| 101 | #address-cells = <1>; |
| 102 | #size-cells = <0>; |
| 103 | |
| 104 | touchscreen@20 { |
| 105 | compatible = "zinitix,bt541"; |
| 106 | reg = <0x20>; |
| 107 | interrupt-parent = <&gpio>; |
| 108 | interrupts = <13 IRQ_TYPE_EDGE_FALLING>; |
| 109 | vcca-supply = <®_vcca_tsp>; |
| 110 | vdd-supply = <®_vdd_tsp>; |
| 111 | touchscreen-size-x = <540>; |
| 112 | touchscreen-size-y = <960>; |
| 113 | zinitix,mode = <2>; |
| 114 | }; |
| 115 | }; |