1*3470d69bSKrzysztof Kozlowski# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2*3470d69bSKrzysztof Kozlowski%YAML 1.2 3*3470d69bSKrzysztof Kozlowski--- 4*3470d69bSKrzysztof Kozlowski$id: http://devicetree.org/schemas/net/nfc/ti,trf7970a.yaml# 5*3470d69bSKrzysztof Kozlowski$schema: http://devicetree.org/meta-schemas/core.yaml# 6*3470d69bSKrzysztof Kozlowski 7*3470d69bSKrzysztof Kozlowskititle: Texas Instruments TRF7970A RFID/NFC/15693 Transceiver 8*3470d69bSKrzysztof Kozlowski 9*3470d69bSKrzysztof Kozlowskimaintainers: 10*3470d69bSKrzysztof Kozlowski - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> 11*3470d69bSKrzysztof Kozlowski - Mark Greer <mgreer@animalcreek.com> 12*3470d69bSKrzysztof Kozlowski 13*3470d69bSKrzysztof Kozlowskiproperties: 14*3470d69bSKrzysztof Kozlowski compatible: 15*3470d69bSKrzysztof Kozlowski const: ti,trf7970a 16*3470d69bSKrzysztof Kozlowski 17*3470d69bSKrzysztof Kozlowski autosuspend-delay: 18*3470d69bSKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 19*3470d69bSKrzysztof Kozlowski description: | 20*3470d69bSKrzysztof Kozlowski Specify autosuspend delay in milliseconds. 21*3470d69bSKrzysztof Kozlowski 22*3470d69bSKrzysztof Kozlowski clock-frequency: 23*3470d69bSKrzysztof Kozlowski description: | 24*3470d69bSKrzysztof Kozlowski Set to specify that the input frequency to the trf7970a is 13560000Hz or 25*3470d69bSKrzysztof Kozlowski 27120000Hz 26*3470d69bSKrzysztof Kozlowski 27*3470d69bSKrzysztof Kozlowski en2-rf-quirk: 28*3470d69bSKrzysztof Kozlowski type: boolean 29*3470d69bSKrzysztof Kozlowski description: | 30*3470d69bSKrzysztof Kozlowski Specify that the trf7970a being used has the "EN2 RF" erratum 31*3470d69bSKrzysztof Kozlowski 32*3470d69bSKrzysztof Kozlowski interrupts: 33*3470d69bSKrzysztof Kozlowski maxItems: 1 34*3470d69bSKrzysztof Kozlowski 35*3470d69bSKrzysztof Kozlowski irq-status-read-quirk: 36*3470d69bSKrzysztof Kozlowski type: boolean 37*3470d69bSKrzysztof Kozlowski description: | 38*3470d69bSKrzysztof Kozlowski Specify that the trf7970a being used has the "IRQ Status Read" erratum 39*3470d69bSKrzysztof Kozlowski 40*3470d69bSKrzysztof Kozlowski reg: 41*3470d69bSKrzysztof Kozlowski maxItems: 1 42*3470d69bSKrzysztof Kozlowski 43*3470d69bSKrzysztof Kozlowski spi-max-frequency: true 44*3470d69bSKrzysztof Kozlowski 45*3470d69bSKrzysztof Kozlowski ti,enable-gpios: 46*3470d69bSKrzysztof Kozlowski minItems: 1 47*3470d69bSKrzysztof Kozlowski maxItems: 2 48*3470d69bSKrzysztof Kozlowski description: | 49*3470d69bSKrzysztof Kozlowski One or two GPIO entries used for 'EN' and 'EN2' pins on the TRF7970A. EN2 50*3470d69bSKrzysztof Kozlowski is optional. 51*3470d69bSKrzysztof Kozlowski 52*3470d69bSKrzysztof Kozlowski vdd-io-supply: 53*3470d69bSKrzysztof Kozlowski description: | 54*3470d69bSKrzysztof Kozlowski Regulator specifying voltage for VDD-IO 55*3470d69bSKrzysztof Kozlowski 56*3470d69bSKrzysztof Kozlowski vin-supply: 57*3470d69bSKrzysztof Kozlowski description: | 58*3470d69bSKrzysztof Kozlowski Regulator for supply voltage to VIN pin 59*3470d69bSKrzysztof Kozlowski 60*3470d69bSKrzysztof Kozlowskirequired: 61*3470d69bSKrzysztof Kozlowski - compatible 62*3470d69bSKrzysztof Kozlowski - interrupts 63*3470d69bSKrzysztof Kozlowski - reg 64*3470d69bSKrzysztof Kozlowski - spi-max-frequency 65*3470d69bSKrzysztof Kozlowski - ti,enable-gpios 66*3470d69bSKrzysztof Kozlowski - vin-supply 67*3470d69bSKrzysztof Kozlowski 68*3470d69bSKrzysztof KozlowskiadditionalProperties: false 69*3470d69bSKrzysztof Kozlowski 70*3470d69bSKrzysztof Kozlowskiexamples: 71*3470d69bSKrzysztof Kozlowski - | 72*3470d69bSKrzysztof Kozlowski #include <dt-bindings/gpio/gpio.h> 73*3470d69bSKrzysztof Kozlowski #include <dt-bindings/interrupt-controller/irq.h> 74*3470d69bSKrzysztof Kozlowski 75*3470d69bSKrzysztof Kozlowski i2c { 76*3470d69bSKrzysztof Kozlowski #address-cells = <1>; 77*3470d69bSKrzysztof Kozlowski #size-cells = <0>; 78*3470d69bSKrzysztof Kozlowski 79*3470d69bSKrzysztof Kozlowski nfc@0 { 80*3470d69bSKrzysztof Kozlowski compatible = "ti,trf7970a"; 81*3470d69bSKrzysztof Kozlowski reg = <0>; 82*3470d69bSKrzysztof Kozlowski 83*3470d69bSKrzysztof Kozlowski pinctrl-names = "default"; 84*3470d69bSKrzysztof Kozlowski pinctrl-0 = <&trf7970a_default>; 85*3470d69bSKrzysztof Kozlowski spi-max-frequency = <2000000>; 86*3470d69bSKrzysztof Kozlowski interrupt-parent = <&gpio2>; 87*3470d69bSKrzysztof Kozlowski interrupts = <14 0>; 88*3470d69bSKrzysztof Kozlowski 89*3470d69bSKrzysztof Kozlowski ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_HIGH>, 90*3470d69bSKrzysztof Kozlowski <&gpio2 5 GPIO_ACTIVE_HIGH>; 91*3470d69bSKrzysztof Kozlowski vin-supply = <&ldo3_reg>; 92*3470d69bSKrzysztof Kozlowski vdd-io-supply = <&ldo2_reg>; 93*3470d69bSKrzysztof Kozlowski autosuspend-delay = <30000>; 94*3470d69bSKrzysztof Kozlowski irq-status-read-quirk; 95*3470d69bSKrzysztof Kozlowski en2-rf-quirk; 96*3470d69bSKrzysztof Kozlowski clock-frequency = <27120000>; 97*3470d69bSKrzysztof Kozlowski }; 98*3470d69bSKrzysztof Kozlowski }; 99