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| 1 | +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | +%YAML 1.2 |
| 3 | +--- |
| 4 | +$id: http://devicetree.org/schemas/input/touchscreen/ti,tsc2005.yaml# |
| 5 | +$schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | + |
| 7 | +title: Texas Instruments TSC2004 and TSC2005 touchscreen controller bindings |
| 8 | + |
| 9 | +maintainers: |
| 10 | + |
| 11 | + - Michael Welling <[email protected]> |
| 12 | + |
| 13 | +properties: |
| 14 | + $nodename: |
| 15 | + pattern: "^touchscreen(@.*)?$" |
| 16 | + |
| 17 | + compatible: |
| 18 | + enum: |
| 19 | + - ti,tsc2004 |
| 20 | + - ti,tsc2005 |
| 21 | + |
| 22 | + reg: |
| 23 | + maxItems: 1 |
| 24 | + description: | |
| 25 | + I2C address when used on the I2C bus, or the SPI chip select index |
| 26 | + when used on the SPI bus |
| 27 | +
|
| 28 | + interrupts: |
| 29 | + maxItems: 1 |
| 30 | + |
| 31 | + reset-gpios: |
| 32 | + maxItems: 1 |
| 33 | + description: GPIO specifier for the controller reset line |
| 34 | + |
| 35 | + spi-max-frequency: |
| 36 | + description: TSC2005 SPI bus clock frequency. |
| 37 | + maximum: 25000000 |
| 38 | + |
| 39 | + ti,x-plate-ohms: |
| 40 | + description: resistance of the touchscreen's X plates in ohm (defaults to 280) |
| 41 | + |
| 42 | + ti,esd-recovery-timeout-ms: |
| 43 | + description: | |
| 44 | + if the touchscreen does not respond after the configured time |
| 45 | + (in milli seconds), the driver will reset it. This is disabled |
| 46 | + by default. |
| 47 | +
|
| 48 | + vio-supply: |
| 49 | + description: Regulator specifier |
| 50 | + |
| 51 | + touchscreen-fuzz-pressure: true |
| 52 | + touchscreen-fuzz-x: true |
| 53 | + touchscreen-fuzz-y: true |
| 54 | + touchscreen-max-pressure: true |
| 55 | + touchscreen-size-x: true |
| 56 | + touchscreen-size-y: true |
| 57 | + |
| 58 | +allOf: |
| 59 | + - $ref: touchscreen.yaml# |
| 60 | + - if: |
| 61 | + properties: |
| 62 | + compatible: |
| 63 | + contains: |
| 64 | + const: ti,tsc2004 |
| 65 | + then: |
| 66 | + properties: |
| 67 | + spi-max-frequency: false |
| 68 | + |
| 69 | +additionalProperties: false |
| 70 | + |
| 71 | +required: |
| 72 | + - compatible |
| 73 | + - reg |
| 74 | + - interrupts |
| 75 | + |
| 76 | +examples: |
| 77 | + - | |
| 78 | + #include <dt-bindings/interrupt-controller/irq.h> |
| 79 | + #include <dt-bindings/gpio/gpio.h> |
| 80 | + i2c { |
| 81 | + #address-cells = <1>; |
| 82 | + #size-cells = <0>; |
| 83 | + touchscreen@48 { |
| 84 | + compatible = "ti,tsc2004"; |
| 85 | + reg = <0x48>; |
| 86 | + vio-supply = <&vio>; |
| 87 | +
|
| 88 | + reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; |
| 89 | + interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>; |
| 90 | +
|
| 91 | + touchscreen-fuzz-x = <4>; |
| 92 | + touchscreen-fuzz-y = <7>; |
| 93 | + touchscreen-fuzz-pressure = <2>; |
| 94 | + touchscreen-size-x = <4096>; |
| 95 | + touchscreen-size-y = <4096>; |
| 96 | + touchscreen-max-pressure = <2048>; |
| 97 | +
|
| 98 | + ti,x-plate-ohms = <280>; |
| 99 | + ti,esd-recovery-timeout-ms = <8000>; |
| 100 | + }; |
| 101 | + }; |
| 102 | + - | |
| 103 | + #include <dt-bindings/interrupt-controller/irq.h> |
| 104 | + #include <dt-bindings/gpio/gpio.h> |
| 105 | + spi { |
| 106 | + #address-cells = <1>; |
| 107 | + #size-cells = <0>; |
| 108 | + touchscreen@0 { |
| 109 | + compatible = "ti,tsc2005"; |
| 110 | + spi-max-frequency = <6000000>; |
| 111 | + reg = <0>; |
| 112 | +
|
| 113 | + vio-supply = <&vio>; |
| 114 | +
|
| 115 | + reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */ |
| 116 | + interrupts-extended = <&gpio4 4 IRQ_TYPE_EDGE_RISING>; /* 100 */ |
| 117 | +
|
| 118 | + touchscreen-fuzz-x = <4>; |
| 119 | + touchscreen-fuzz-y = <7>; |
| 120 | + touchscreen-fuzz-pressure = <2>; |
| 121 | + touchscreen-size-x = <4096>; |
| 122 | + touchscreen-size-y = <4096>; |
| 123 | + touchscreen-max-pressure = <2048>; |
| 124 | +
|
| 125 | + ti,x-plate-ohms = <280>; |
| 126 | + ti,esd-recovery-timeout-ms = <8000>; |
| 127 | + }; |
| 128 | + }; |
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