Commit 5c9360ea authored by Philipp Zabel's avatar Philipp Zabel
Browse files

dt-bindings: reset: nuvoton,npcm-reset: Convert to yaml 



Convert the device tree bindings for the Nuvoton NPCM reset controller
to YAML schema to allow participating in DT validation.

Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Cc: Avi Fishman <avifishman70@gmail.com>
Cc: Tomer Maimon <tmaimon77@gmail.com>
Cc: Tali Perry <tali.perry1@gmail.com>
Cc: Patrick Venture <venture@google.com>
Cc: Nancy Yuen <yuenn@google.com>
Cc: Benjamin Fair <benjaminfair@google.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220407154338.4190674-6-p.zabel@pengutronix.de
parent 7809a619

Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt

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Nuvoton NPCM Reset controller



Required properties:

- compatible : "nuvoton,npcm750-reset" for NPCM7XX BMC

- reg : specifies physical base address and size of the register.

- #reset-cells: must be set to 2



Optional property:

- nuvoton,sw-reset-number - Contains the software reset number to restart the SoC.

  NPCM7xx contain four software reset that represent numbers 1 to 4.



  If 'nuvoton,sw-reset-number' is not specified software reset is disabled.



Example:

	rstc: rstc@f0801000 {

		compatible = "nuvoton,npcm750-reset";

		reg = <0xf0801000 0x70>;

		#reset-cells = <2>;

		nuvoton,sw-reset-number = <2>;

	};



Specifying reset lines connected to IP NPCM7XX modules

======================================================

example:



        spi0: spi@..... {

                ...

                resets = <&rstc NPCM7XX_RESET_IPSRST2 NPCM7XX_RESET_PSPI1>;

                ...

        };



The index could be found in <dt-bindings/reset/nuvoton,npcm7xx-reset.h>.

Documentation/devicetree/bindings/reset/nuvoton,npcm750-reset.yaml

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/reset/nuvoton,npcm750-reset.yaml#

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



title: Nuvoton NPCM Reset controller



maintainers:

  - Tomer Maimon <tmaimon77@gmail.com>



properties:

  compatible:

    const: nuvoton,npcm750-reset



  reg:

    maxItems: 1



  '#reset-cells':

    const: 2



  nuvoton,sw-reset-number:

    $ref: /schemas/types.yaml#/definitions/uint32

    minimum: 1

    maximum: 4

    description: |

      Contains the software reset number to restart the SoC.

      If not specified, software reset is disabled.



required:

  - compatible

  - reg

  - '#reset-cells'



additionalProperties: false



examples:

  - |

    #include <dt-bindings/reset/nuvoton,npcm7xx-reset.h>

    rstc: rstc@f0801000 {

        compatible = "nuvoton,npcm750-reset";

        reg = <0xf0801000 0x70>;

        #reset-cells = <2>;

        nuvoton,sw-reset-number = <2>;

    };



    // Specifying reset lines connected to IP NPCM7XX modules

    spi0: spi {

        resets = <&rstc NPCM7XX_RESET_IPSRST2 NPCM7XX_RESET_PSPI1>;

    };