ti,tsc2005.yaml

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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   - Marek Vasut <marex@denx.de>
   11   - Michael Welling <mwelling@ieee.org>
   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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