Commit 3470d69b authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Rob Herring
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dt-bindings: nfc: ti,trf7970a: convert to dtschema 



Convert the TI TRF7970A NFC to DT schema format.

Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211011073934.34340-8-krzysztof.kozlowski@canonical.com


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 19951f4c

Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml

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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 <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>;

        };

    };

Documentation/devicetree/bindings/net/nfc/trf7970a.txt

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* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver



Required properties:

- compatible: Should be "ti,trf7970a".

- spi-max-frequency: Maximum SPI frequency (<= 2000000).

- interrupts: A single interrupt specifier.

- ti,enable-gpios: One or two GPIO entries used for 'EN' and 'EN2' pins on the

  TRF7970A. EN2 is optional.

- vin-supply: Regulator for supply voltage to VIN pin



Optional SoC Specific Properties:

- pinctrl-names: Contains only one value - "default".

- pintctrl-0: Specifies the pin control groups used for this controller.

- autosuspend-delay: Specify autosuspend delay in milliseconds.

- irq-status-read-quirk: Specify that the trf7970a being used has the

  "IRQ Status Read" erratum.

- en2-rf-quirk: Specify that the trf7970a being used has the "EN2 RF"

  erratum.

- vdd-io-supply: Regulator specifying voltage for vdd-io

- clock-frequency: Set to specify that the input frequency to the trf7970a is 13560000Hz or 27120000Hz



Example (for ARM-based BeagleBone with TRF7970A on SPI1):



&spi1 {



	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>;

	};

};

MAINTAINERS

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@@ -18781,7 +18781,7 @@ M: Mark Greer <mgreer@animalcreek.com> 
L:	linux-wireless@vger.kernel.org

L:	linux-nfc@lists.01.org (subscribers-only)

S:	Supported

F:	Documentation/devicetree/bindings/net/nfc/trf7970a.txt

F:	Documentation/devicetree/bindings/net/nfc/ti,trf7970a.yaml

F:	drivers/nfc/trf7970a.c









TI TSC2046 ADC DRIVER