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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/nfc/ti,trf7970a.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments TRF7970A RFID/NFC/15693 Transceiver
maintainers:
- Krzysztof Kozlowski <krzk@kernel.org>
- Mark Greer <mgreer@animalcreek.com>
properties:
compatible:
const: ti,trf7970a
autosuspend-delay:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
Specify autosuspend delay in milliseconds.
clock-frequency:
description: |
Set to specify that the input frequency to the trf7970a is 13560000Hz or
27120000Hz
en2-rf-quirk:
type: boolean
description: |
Specify that the trf7970a being used has the "EN2 RF" erratum
interrupts:
maxItems: 1
irq-status-read-quirk:
type: boolean
description: |
Specify that the trf7970a being used has the "IRQ Status Read" erratum
reg:
maxItems: 1
ti,enable-gpios:
minItems: 1
maxItems: 2
description: |
One or two GPIO entries used for 'EN' and 'EN2' pins on the TRF7970A. EN2
is optional.
vdd-io-supply:
description: |
Regulator specifying voltage for VDD-IO
vin-supply:
description: |
Regulator for supply voltage to VIN pin
required:
- compatible
- interrupts
- reg
- spi-max-frequency
- ti,enable-gpios
- vin-supply
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
nfc@0 {
compatible = "ti,trf7970a";
reg = <0>;
pinctrl-names = "default";
pinctrl-0 = <&trf7970a_default>;
spi-max-frequency = <2000000>;
interrupt-parent = <&gpio2>;
interrupts = <14 0>;
ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>,
<&gpio2 5 GPIO_ACTIVE_HIGH>;
vin-supply = <&ldo3_reg>;
vdd-io-supply = <&ldo2_reg>;
autosuspend-delay = <30000>;
irq-status-read-quirk;
en2-rf-quirk;
clock-frequency = <27120000>;
};
};
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