| # 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 <krzysztof.kozlowski@canonical.com> |
| - 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 |
| |
| spi-max-frequency: true |
| |
| 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 |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| |
| i2c { |
| #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>; |
| }; |
| }; |
