| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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/ti,trf7970a.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Texas Instruments TRF7970A RFID/NFC/15693 Transceiver |
| 8 | |
| 9 | maintainers: |
| 10 | - Krzysztof Kozlowski <krzk@kernel.org> |
| 11 | - Mark Greer <mgreer@animalcreek.com> |
| 12 | |
| 13 | properties: |
| 14 | compatible: |
| 15 | const: ti,trf7970a |
| 16 | |
| 17 | autosuspend-delay: |
| 18 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 19 | description: | |
| 20 | Specify autosuspend delay in milliseconds. |
| 21 | |
| 22 | clock-frequency: |
| 23 | description: | |
| 24 | Set to specify that the input frequency to the trf7970a is 13560000Hz or |
| 25 | 27120000Hz |
| 26 | |
| 27 | en2-rf-quirk: |
| 28 | type: boolean |
| 29 | description: | |
| 30 | Specify that the trf7970a being used has the "EN2 RF" erratum |
| 31 | |
| 32 | interrupts: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | irq-status-read-quirk: |
| 36 | type: boolean |
| 37 | description: | |
| 38 | Specify that the trf7970a being used has the "IRQ Status Read" erratum |
| 39 | |
| 40 | reg: |
| 41 | maxItems: 1 |
| 42 | |
| 43 | ti,enable-gpios: |
| 44 | minItems: 1 |
| 45 | maxItems: 2 |
| 46 | description: | |
| 47 | One or two GPIO entries used for 'EN' and 'EN2' pins on the TRF7970A. EN2 |
| 48 | is optional. |
| 49 | |
| 50 | vdd-io-supply: |
| 51 | description: | |
| 52 | Regulator specifying voltage for VDD-IO |
| 53 | |
| 54 | vin-supply: |
| 55 | description: | |
| 56 | Regulator for supply voltage to VIN pin |
| 57 | |
| 58 | required: |
| 59 | - compatible |
| 60 | - interrupts |
| 61 | - reg |
| 62 | - spi-max-frequency |
| 63 | - ti,enable-gpios |
| 64 | - vin-supply |
| 65 | |
| 66 | allOf: |
| 67 | - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| 68 | |
| 69 | unevaluatedProperties: false |
| 70 | |
| 71 | examples: |
| 72 | - | |
| 73 | #include <dt-bindings/gpio/gpio.h> |
| 74 | #include <dt-bindings/interrupt-controller/irq.h> |
| 75 | |
| 76 | i2c { |
| 77 | #address-cells = <1>; |
| 78 | #size-cells = <0>; |
| 79 | |
| 80 | nfc@0 { |
| 81 | compatible = "ti,trf7970a"; |
| 82 | reg = <0>; |
| 83 | |
| 84 | pinctrl-names = "default"; |
| 85 | pinctrl-0 = <&trf7970a_default>; |
| 86 | spi-max-frequency = <2000000>; |
| 87 | interrupt-parent = <&gpio2>; |
| 88 | interrupts = <14 0>; |
| 89 | |
| 90 | ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>, |
| 91 | <&gpio2 5 GPIO_ACTIVE_HIGH>; |
| 92 | vin-supply = <&ldo3_reg>; |
| 93 | vdd-io-supply = <&ldo2_reg>; |
| 94 | autosuspend-delay = <30000>; |
| 95 | irq-status-read-quirk; |
| 96 | en2-rf-quirk; |
| 97 | clock-frequency = <27120000>; |
| 98 | }; |
| 99 | }; |