Commit 4cc0246c authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Rob Herring
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dt-bindings: nfc: nxp,pn532: convert to dtschema 



Convert the NXP PN532 NFC controller to DT schema format.

Drop the "clock-frequency" property during conversion because it is a
property of I2C bus controller, not I2C slave device.  It was also never
used by the driver.

Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211011073934.34340-4-krzysztof.kozlowski@canonical.com


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 54aed10d

Documentation/devicetree/bindings/net/nfc/nxp,pn532.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/nxp,pn532.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: NXP Semiconductors PN532 NFC controller



maintainers:

  - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>



properties:

  compatible:

    oneOf:

      - const: nxp,pn532

      - description: Deprecated bindings

        enum:

          - nxp,pn532-i2c

          - nxp,pn533-i2c

        deprecated: true



  interrupts:

    description: Required if connected via I2C

    maxItems: 1



  reg:

    description: Required if connected via I2C

    maxItems: 1



required:

  - compatible



dependencies:

  interrupts: [ 'reg' ]



additionalProperties: false



examples:

  # PN532 on I2C bus

  - |

    #include <dt-bindings/interrupt-controller/irq.h>



    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        nfc@24 {

            compatible = "nxp,pn532";



            reg = <0x24>;



            interrupt-parent = <&gpio1>;

            interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;

        };

    };



  # PN532 connected via UART

  - |

    serial@49042000 {

        reg = <0x49042000 0x400>;



        nfc {

            compatible = "nxp,pn532";

        };

    };

Documentation/devicetree/bindings/net/nfc/pn532.txt

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* NXP Semiconductors PN532 NFC Controller



Required properties:

- compatible: Should be

    - "nxp,pn532" Place a node with this inside the devicetree node of the bus

                  where the NFC chip is connected to.

                  Currently the kernel has phy bindings for uart and i2c.

    - "nxp,pn532-i2c" (DEPRECATED) only works for the i2c binding.

    - "nxp,pn533-i2c" (DEPRECATED) only works for the i2c binding.



Required properties if connected on i2c:

- clock-frequency: I²C work frequency.

- reg: for the I²C bus address. This is fixed at 0x24 for the PN532.

- interrupts: GPIO interrupt to which the chip is connected



Optional SoC Specific Properties:

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

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



Example (for ARM-based BeagleBone with PN532 on I2C2):



&i2c2 {





	pn532: nfc@24 {



		compatible = "nxp,pn532";



		reg = <0x24>;

		clock-frequency = <400000>;



		interrupt-parent = <&gpio1>;

		interrupts = <17 IRQ_TYPE_EDGE_FALLING>;



	};

};



Example (for PN532 connected via uart):



uart4: serial@49042000 {

        compatible = "ti,omap3-uart";



        pn532: nfc {

                compatible = "nxp,pn532";

        };

};