dt-bindings: microchip-otpc: document Microchip OTPC

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/nvmem/microchip,sama7g5-otpc.yaml#

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

title: Microchip SAMA7G5 OTP Controller (OTPC)

maintainers:

  - Claudiu Beznea <claudiu.beznea@microchip.com>

description: |

  OTP controller drives a NVMEM memory where system specific data

  (e.g. calibration data for analog cells, hardware configuration

  settings, chip identifiers) or user specific data could be stored.

allOf:

  - $ref: "nvmem.yaml#"

properties:

  compatible:

    items:

      - const: microchip,sama7g5-otpc

      - const: syscon

  reg:

    maxItems: 1

required:

  - compatible

  - reg

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/nvmem/microchip,sama7g5-otpc.h>

    otpc: efuse@e8c00000 {

        compatible = "microchip,sama7g5-otpc", "syscon";

        reg = <0xe8c00000 0xec>;

        #address-cells = <1>;

        #size-cells = <1>;

        temperature_calib: calib@1 {

            reg = <OTP_PKT(1) 76>;

        };

    };

...

/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */

#ifndef _DT_BINDINGS_NVMEM_MICROCHIP_OTPC_H

#define _DT_BINDINGS_NVMEM_MICROCHIP_OTPC_H

/*

 * Need to have it as a multiple of 4 as NVMEM memory is registered with

 * stride = 4.

 */

#define OTP_PKT(id)			((id) * 4)

#endif