net/nfc/nxp%2Cpn544.yaml

0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/net/nfc/nxp,pn544.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: NXP Semiconductors PN544 NFC Controller
0008
0009 maintainers:
0010   - Krzysztof Kozlowski <krzk@kernel.org>
0011
0012 properties:
0013   compatible:
0014     const: nxp,pn544-i2c
0015
0016   reg:
0017     maxItems: 1
0018
0019   interrupts:
0020     maxItems: 1
0021
0022   enable-gpios:
0023     description: Output GPIO pin used for enabling/disabling the PN544
0024     maxItems: 1
0025
0026   firmware-gpios:
0027     description: Output GPIO pin used to enter firmware download mode
0028     maxItems: 1
0029
0030 required:
0031   - compatible
0032   - reg
0033   - interrupts
0034   - enable-gpios
0035   - firmware-gpios
0036
0037 additionalProperties: false
0038
0039 examples:
0040   - |
0041     #include <dt-bindings/gpio/gpio.h>
0042     #include <dt-bindings/interrupt-controller/irq.h>
0043
0044     i2c {
0045         #address-cells = <1>;
0046         #size-cells = <0>;
0047
0048         nfc@28 {
0049             compatible = "nxp,pn544-i2c";
0050             reg = <0x28>;
0051
0052             interrupt-parent = <&gpio1>;
0053             interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
0054
0055             enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
0056             firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
0057         };
0058     };