Commit eff4e04c authored by Keguang Zhang's avatar Keguang Zhang Committed by Miquel Raynal
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dt-bindings: mtd: Add Loongson-1 NAND Controller 



Add devicetree binding document for Loongson-1 NAND controller.

Reviewed-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: default avatarKeguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent 8ffd015d

Documentation/devicetree/bindings/mtd/loongson,ls1b-nand-controller.yaml

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/mtd/loongson,ls1b-nand-controller.yaml#

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



title: Loongson-1 NAND Controller



maintainers:

  - Keguang Zhang <keguang.zhang@gmail.com>



description:

  The Loongson-1 NAND controller abstracts all supported operations,

  meaning it does not support low-level access to raw NAND flash chips.

  Moreover, the controller is paired with the DMA engine to perform

  READ and PROGRAM functions.



allOf:

  - $ref: nand-controller.yaml



properties:

  compatible:

    oneOf:

      - enum:

          - loongson,ls1b-nand-controller

          - loongson,ls1c-nand-controller

      - items:

          - enum:

              - loongson,ls1a-nand-controller

          - const: loongson,ls1b-nand-controller



  reg:

    maxItems: 2



  reg-names:

    items:

      - const: nand

      - const: nand-dma



  dmas:

    maxItems: 1



  dma-names:

    const: rxtx



required:

  - compatible

  - reg

  - reg-names

  - dmas

  - dma-names



unevaluatedProperties: false



examples:

  - |

    nand-controller@1fe78000 {

        compatible = "loongson,ls1b-nand-controller";

        reg = <0x1fe78000 0x24>, <0x1fe78040 0x4>;

        reg-names = "nand", "nand-dma";

        dmas = <&dma 0>;

        dma-names = "rxtx";

        #address-cells = <1>;

        #size-cells = <0>;



        nand@0 {

            reg = <0>;

            label = "ls1x-nand";

            nand-use-soft-ecc-engine;

            nand-ecc-algo = "hamming";

        };

    };