Commit 46b4ddd2 authored by Abd-Alrhman Masalkhi's avatar Abd-Alrhman Masalkhi Committed by Greg Kroah-Hartman
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dt-bindings: eeprom: Add ST M24LR support 



Add support for STMicroelectronics M24LR RFID/NFC EEPROM chips.
These devices use two I2C addresses: the primary address provides
access to control and system parameter registers, while the
secondary address is used for EEPROM access.

Signed-off-by: default avatarAbd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250717063934.5083-2-abd.masalkhi@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c585a4ad

Documentation/devicetree/bindings/eeprom/st,m24lr.yaml

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+52 −0
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/eeprom/st,m24lr.yaml#

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



title: STMicroelectronics M24LR NFC/RFID EEPROM



maintainers:

  - Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>



description:

  STMicroelectronics M24LR series are dual-interface (RF + I2C)

  EEPROM chips. These devices support I2C-based access to both

  memory and a system area that controls authentication and configuration.

  They expose two I2C addresses, one for the system parameter sector and

  one for the EEPROM.



allOf:

  - $ref: /schemas/nvmem/nvmem.yaml#



properties:

  compatible:

    enum:

      - st,m24lr04e-r

      - st,m24lr16e-r

      - st,m24lr64e-r



  reg:

    items:

      - description: I2C address used for control/system registers

      - description: I2C address used for EEPROM memory access



required:

  - compatible

  - reg



unevaluatedProperties: false



examples:

  - |

    i2c {

      #address-cells = <1>;

      #size-cells = <0>;



      eeprom@57 {

        compatible = "st,m24lr04e-r";

        reg = <0x57>, /* primary-device */

              <0x53>; /* secondary-device */

      };

    };

...