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Message-ID: <eec602ce-e74a-4b37-880d-32b49a55adf8@gmail.com>
Date: Tue, 8 Oct 2024 10:30:07 +0800
From: Hui-Ping Chen <hpchen0nvt@...il.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: richard@....at, vigneshr@...com, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, nikita.shubin@...uefel.me, arnd@...db.de,
 vkoul@...nel.org, esben@...nix.com, linux-arm-kernel@...ts.infradead.org,
 linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org,
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v6 1/2] dt-bindings: mtd: nuvoton,ma35d1-nand: add new
 bindings

Dear Miquel,

Thank you for your reply.



On 2024/10/1 下午 06:19, Miquel Raynal wrote:
> Hi Hui-Ping,
>
> hpchen0nvt@...il.com wrote on Fri, 27 Sep 2024 02:07:48 +0000:
>
>> Add dt-bindings for the Nuvoton MA35 SoC NAND Controller.
>>
>> Signed-off-by: Hui-Ping Chen <hpchen0nvt@...il.com>
>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>> ---
>>   .../bindings/mtd/nuvoton,ma35d1-nand.yaml     | 93 +++++++++++++++++++
>>   1 file changed, 93 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml b/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml
>> new file mode 100644
>> index 000000000000..a8a549644c98
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml
>> @@ -0,0 +1,93 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mtd/nuvoton,ma35d1-nand.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Nuvoton MA35D1 NAND Flash Interface (NFI) Controller
>> +
>> +maintainers:
>> +  - Hui-Ping Chen <hpchen0nvt@...il.com>
>> +
>> +allOf:
>> +  - $ref: nand-controller.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - nuvoton,ma35d1-nand-controller
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +patternProperties:
>> +  "^nand@[a-f0-9]$":
>> +    type: object
>> +    $ref: raw-nand-chip.yaml
>> +    properties:
>> +      nand-ecc-step-size:
>> +        enum: [512, 1024]
>> +
>> +      nand-ecc-strength:
>> +        enum: [8, 12, 24]
>> +
>> +    required:
>> +      - nand-ecc-step-size
>> +      - nand-ecc-strength
> No, they should not be required, unless there is a good reason to do
> so. Optimal strength is discoverable, stop forcing it by default.


I will remove this required.


>> +
>> +    unevaluatedProperties: false
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - clocks
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>> +
>> +    soc {
>> +        #address-cells = <2>;
>> +        #size-cells = <2>;
>> +
>> +        nand-controller@...A0000 {
>> +            compatible = "nuvoton,ma35d1-nand-controller";
>> +            reg = <0x0 0x401A0000 0x0 0x1000>;
>> +            interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>;
>> +            clocks = <&clk NAND_GATE>;
>> +            #address-cells = <1>;
>> +            #size-cells = <0>;
>> +
>> +            nand@0 {
>> +                reg = <0>;
>> +
>> +                nand-on-flash-bbt;
>> +                nand-ecc-step-size = <512>;
>> +                nand-ecc-strength = <8>;
>> +
>> +                partitions {
>> +                    compatible = "fixed-partitions";
>> +                    #address-cells = <1>;
>> +                    #size-cells = <1>;
>> +
>> +                    uboot@0 {
>> +                        label = "nand-uboot";
>> +                        read-only;
>> +                        reg = <0x0 0x300000>;
>> +                    };
>> +                };
>> +            };
>> +        };
>> +    };
>> +
>> +...
>
> Thanks,
> Miquèl


Best regards,

Hui-Ping Chen



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