Re: [PATCH v2 11/12] dt-bindings: nand: Add fsl,elbc-fcm-nand

[Rob Herring <robh@xxxxxxxxxx>]

On Fri, Feb 07, 2025 at 10:30:28PM +0100, J. Neuschäfer wrote:
> Formalize the binding already supported by the fsl_elbc_nand.c driver
> and used in several device trees in arch/powerpc/boot/dts/.
> 
> Signed-off-by: J. Neuschäfer <j.ne@xxxxxxxxxx>
> ---
> 
> V2:
> - split out from fsl,elbc binding patch
> - constrain #address-cells and #size-cells
> - add a general description
> - use unevaluatedProperties=false instead of additionalProperties=false
> - fix property order to comply with dts coding style
> - include raw-nand-chip.yaml instead of nand-chip.yaml

Why? Doesn't look like you use anything from it. I think the correct 
thing to use here is just mtd.yaml to pick up partitions.

> ---
>  .../devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml | 68 ++++++++++++++++++++++
>  1 file changed, 68 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml b/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..1de97bb24fa4a83e2ea5d94ab822dd0e37baa102
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/fsl,elbc-fcm-nand.yaml
> @@ -0,0 +1,68 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mtd/fsl,elbc-fcm-nand.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NAND flash attached to Freescale eLBC
> +
> +description:
> +  The Freescale Enhanced Local Bus controller (eLBC) contains logic to
> +  interface with NAND flash, called the NAND Flash Control Machine (FCM).
> +  This binding describes flash attached to an eLBC using the FCM.
> +
> +maintainers:
> +  - J. Neuschäfer <j.ne@xxxxxxxxxx>
> +
> +allOf:
> +  - $ref: raw-nand-chip.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - fsl,mpc8313-fcm-nand
> +              - fsl,mpc8315-fcm-nand
> +              - fsl,mpc8377-fcm-nand
> +              - fsl,mpc8378-fcm-nand
> +              - fsl,mpc8379-fcm-nand
> +              - fsl,mpc8536-fcm-nand
> +              - fsl,mpc8569-fcm-nand
> +              - fsl,mpc8572-fcm-nand
> +              - fsl,p1020-fcm-nand
> +              - fsl,p1021-fcm-nand
> +              - fsl,p1025-fcm-nand
> +              - fsl,p2020-fcm-nand
> +          - const: fsl,elbc-fcm-nand
> +      - const: fsl,elbc-fcm-nand
> +
> +  reg:
> +    maxItems: 1
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    localbus {
> +        #address-cells = <2>;
> +        #size-cells = <1>;
> +
> +        nand@1,0 {
> +            compatible = "fsl,mpc8315-fcm-nand",
> +                         "fsl,elbc-fcm-nand";
> +            reg = <0x1 0x0 0x2000>;
> +            #address-cells = <1>;
> +            #size-cells = <1>;
> +        };
> +    };
> 
> -- 
> 2.48.0.rc1.219.gb6b6757d772
>