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Message-ID: <77b03a23-6880-4722-bafa-167bb5d45ae1@kernel.org>
Date: Tue, 15 Oct 2024 07:35:04 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc: broonie@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, tsbogend@...ha.franken.de, linux-spi@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-mips@...r.kernel.org
Subject: Re: [PATCH v4 1/3] dt-bindings: spi: Add realtek,rtl9301-snand

On 14/10/2024 22:38, Chris Packham wrote:
> 
> On 14/10/24 20:12, Krzysztof Kozlowski wrote:
>> On Mon, Oct 14, 2024 at 02:52:43PM +1300, Chris Packham wrote:
>>   
>>> diff --git a/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml b/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml
>>> new file mode 100644
>>> index 000000000000..397b32b41e86
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/spi/realtek,rtl9301-snand.yaml
>>> @@ -0,0 +1,59 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://scanmail.trustwave.com/?c=20988&d=3cSM59Be7zhiOY6j70BGhTh0kCvZ-1Nf0f5XJZnTzQ&u=http%3a%2f%2fdevicetree%2eorg%2fschemas%2fspi%2frealtek%2crtl9301-snand%2eyaml%23
>>> +$schema: http://scanmail.trustwave.com/?c=20988&d=3cSM59Be7zhiOY6j70BGhTh0kCvZ-1Nf0a1RIsqGnw&u=http%3a%2f%2fdevicetree%2eorg%2fmeta-schemas%2fcore%2eyaml%23
>>> +
>>> +title: SPI-NAND Flash Controller for Realtek RTL9300 SoCs
>>> +
>>> +maintainers:
>>> +  - Chris Packham <chris.packham@...iedtelesis.co.nz>
>>> +
>>> +description:
>>> +  The Realtek RTL9300 SoCs have a built in SPI-NAND controller. It supports
>>> +  typical SPI-NAND page cache operations in single, dual or quad IO mode.
>>> +
>>> +properties:
>>> +  compatible:
>>> +    enum:
>>> +      - realtek,rtl9301-snand
>>> +      - realtek,rtl9302b-snand
>>> +      - realtek,rtl9302c-snand
>>> +      - realtek,rtl9303-snand
>> All of them look compatible with each other, why not using fallback to
>> 9301? That's common and expected pattern.
> 
> So something like
> 
> properties:
>    compatible:
>      oneOf:
>        - items:
>           -  enum:
>               - realtek,rtl9302b-snand
>              - realtek,rtl9302c-snand
>              - realtek,rtl9303-snand
>         - const: realtek,rtl9301-snand
>       - items:

Yes, except this one is not a list, so just const.

>          const: realtek,rtl9301-snand
> 
> Or am I over thinking it and I should just use only a single "const: 
> realtek,rtl9301-snand"?
> 
>>
>> Best regards,
>> Krzysztof
>>

Best regards,
Krzysztof


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