[PATCH] dt-bindings: mtd: hisilicon,504-nfc: convert to DT schema

[Akhila YS]

On 12-03-2026 20:58, Rob Herring wrote:
> On Sat, Mar 07, 2026 at 04:43:56PM +0000, Akhila YS wrote:
>> Convert Hisilicon Hip04 Soc NAND controller DT binding to YAML format.
>>
>> Signed-off-by: Akhila YS <akhilayalmati at gmail.com>
>> ---
>>  .../devicetree/bindings/mtd/hisilicon,504-nfc.yaml | 90 ++++++++++++++++++++++
>>  1 file changed, 90 insertions(+)
> Convert implies the removal of the .txt binding. Where is that? Could be 
> missing? If so, say that.


Hi rob, yeah the removed .txt binding is not added in this commit, i
will add it and send that in a v2.

>> diff --git a/Documentation/devicetree/bindings/mtd/hisilicon,504-nfc.yaml b/Documentation/devicetree/bindings/mtd/hisilicon,504-nfc.yaml
>> new file mode 100644
>> index 000000000000..805ef0af0e04
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/hisilicon,504-nfc.yaml
>> @@ -0,0 +1,90 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/hisilicon,504-nfc.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: HiSilicon Hip04 NAND Flash Controller
>> +
>> +maintainers:
>> +  - Miquel Raynal <miquel.raynal at bootlin.com>
>> +  - Richard Weinberger <richard at nod.at>
> This should be someone with the h/w. I would use the HiSilicon 
> maintainer from MAINTAINERS.


Okay, sure.

>
>> +
>> +description:
>> +  The HiSilicon 504 NFC is a NAND flash memory controller used in the
>> +  Hip04 SoC. It supports hardware ECC for NAND devices and provides
>> +  register and buffer regions for NAND operations.
>> +
>> +allOf:
>> +  - $ref: nand-controller.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: hisilicon,504-nfc
>> +
>> +  reg:
>> +    minItems: 2
>> +    maxItems: 2
> Need to define what each entry is.


Okay.

>
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  nand-bus-width:
>> +    enum: [8, 16]
>> +
>> +  nand-ecc-mode:
>> +    enum:
>> +      - none
>> +      - hw
>> +
>> +  nand-ecc-strength:
>> +    const: 16
>> +
>> +  nand-ecc-step-size:
>> +    const: 1024
>> +
>> +  "#address-cells":
>> +    const: 1
>> +
>> +  "#size-cells":
>> +    const: 0
> These can be dropped as the child (partitions) doesn't have an address.


Okay.

>
>> +
>> +  partitions:
>> +    $ref: /schemas/mtd/partitions/fixed-partitions.yaml#
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - nand-bus-width
>> +  - nand-ecc-mode
>> +  - "#address-cells"
>> +  - "#size-cells"
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    nand-controller at 4020000 {
>> +        compatible = "hisilicon,504-nfc";
>> +        reg = <0x04020000 0x10000>, <0x05000000 0x1000>;
>> +        interrupts = <0 379 4>;
>> +        nand-bus-width = <8>;
>> +        nand-ecc-mode = "hw";
>> +        nand-ecc-strength = <16>;
>> +        nand-ecc-step-size = <1024>;
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +
>> +        partitions {
>> +             compatible = "fixed-partitions";
>> +             #address-cells = <1>;
>> +             #size-cells = <1>;
>> +
>> +             partition at 0 {
>> +                 label = "nand_text";
>> +                 reg = <0x0 0x400000>;
>> +            };
>> +        };
>> +    };
>> +...
>>
>> ---
>> base-commit: d4906ae14a5f136ceb671bb14cedbf13fa560da6
>> change-id: 20260306-hisi504-1-d7aa09c70d93
>>
>> Best regards,
>> -- 
>> Akhila YS <akhilayalmati at gmail.com>
>>
-- 
Best Regards,
Akhila.