Documentation/devicetree/bindings/net/nfc/nxp,pn544.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/net/nfc/nxp,pn544.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: NXP Semiconductors PN544 NFC Controller
   8
   9 maintainers:
  10   - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
  11
  12 properties:
  13   compatible:
  14     const: nxp,pn544-i2c
  15
  16   reg:
  17     maxItems: 1
  18
  19   interrupts:
  20     maxItems: 1
  21
  22   enable-gpios:
  23     description: Output GPIO pin used for enabling/disabling the PN544
  24     maxItems: 1
  25
  26   firmware-gpios:
  27     description: Output GPIO pin used to enter firmware download mode
  28     maxItems: 1
  29
  30 required:
  31   - compatible
  32   - reg
  33   - interrupts
  34   - enable-gpios
  35   - firmware-gpios
  36
  37 additionalProperties: false
  38
  39 examples:
  40   - |
  41     #include <dt-bindings/gpio/gpio.h>
  42     #include <dt-bindings/interrupt-controller/irq.h>
  43
  44     i2c {
  45         #address-cells = <1>;
  46         #size-cells = <0>;
  47
  48         nfc@28 {
  49             compatible = "nxp,pn544-i2c";
  50             reg = <0x28>;
  51
  52             interrupt-parent = <&gpio1>;
  53             interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
  54
  55             enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
  56             firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
  57         };
  58     };