linux-kernel - Re: [PATCH v1 1/2] dt-bindings: spi: add loongson spi

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Date:   Mon, 13 Mar 2023 10:09:13 +0800
From:   zhuyinbo <zhuyinbo@...ngson.cn>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Jianmin Lv <lvjianmin@...ngson.cn>, wanghongliang@...ngson.cn,
        Liu Peibao <liupeibao@...ngson.cn>,
        loongson-kernel@...ts.loongnix.cn, zhuyinbo@...ngson.cn,
        zhuyinbo@...ngson.cn
Subject: Re: [PATCH v1 1/2] dt-bindings: spi: add loongson spi


在 2023/3/9 下午3:22, zhuyinbo 写道:
>
> 在 2023/3/9 下午2:23, Krzysztof Kozlowski 写道:
>> On 09/03/2023 03:08, zhuyinbo wrote:
>>> 在 2023/3/8 下午7:30, Krzysztof Kozlowski 写道:
>>>> On 08/03/2023 03:59, Yinbo Zhu wrote:
>>>>> Add the Loongson platform spi binding with DT schema format using
>>>>> json-schema.
>>>>>
>>>>> Signed-off-by: Yinbo Zhu <zhuyinbo@...ngson.cn>
>>>>> ---
>>>>>    .../bindings/spi/loongson,ls-spi.yaml         | 47 
>>>>> +++++++++++++++++++
>>>>>    MAINTAINERS                                   |  6 +++
>>>>>    2 files changed, 53 insertions(+)
>>>>>    create mode 100644 
>>>>> Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml
>>>> Filename matching the compatible.
>>> loongson,ls-spi.yaml is for ls2k-spi and ls7a-spi, I will add following
>>> desription:
>>>
>>>
>>> properties:
>>>     compatible:
>>>       enum:
>>>         - loongson,ls2k-spi
>>>         - loongson,ls7a-spi
>> OK then.
>
> I was to explain why that yaml was name as "loongson,ls-spi.yaml" 
> rather than "loongson,ls2k-spi.yaml"
>
> because that need consider about  yaml filename to match 
> "loongson,ls2k-spi" and "loongson,ls7a-spi".
>
>>
>>>>> diff --git 
>>>>> a/Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml 
>>>>> b/Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml
>>>>> new file mode 100644
>>>>> index 000000000000..8a13a96b3818
>>>>> --- /dev/null
>>>>> +++ b/Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml
>>>>> @@ -0,0 +1,47 @@
>>>>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>>>> +
>>>>> +%YAML 1.2
>>>>> +---
>>>>> +$id: "http://devicetree.org/schemas/spi/loongson,ls-spi.yaml#"
>>>>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
>>>> Drop the quotes. What was the base of your code here?
>>> okay, I will drop the quotes.    and I don't got it  about the code 
>>> base
>>> that you said.
>>>
>>> you meaning is advice me add a line  as follows ?
>> I meant, from which other file did you copy it?
> okay,  but I maybe forgot it,  I should be refer other spi yaml file.
>>
>>>>> +
>>>>> +  clock-names:
>>>>> +    const: boot
>>>> Drop clock-names, not needed for single entry.
>>> if drop the clock-names entry, the yaml file will compile fail.
>> Obviously you have to also drop it from DTS and driver...
>
> drop clock-names should be not  affect my driver,  but I notice other 
> lots of arm64 platform dts
>
> was keep clock-names and clock in dts when use grep search "clock-names".
>
> [zhuyinbo@...alhost www.kernel.org]$ grep -rns "clock-names" arch/arm64/
>
> arch/arm64/boot/dts/sprd/sc9863a.dtsi:280:            clock-names = 
> "apb_pclk";
> arch/arm64/boot/dts/sprd/sc9863a.dtsi:305:            clock-names = 
> "apb_pclk";
> arch/arm64/boot/dts/sprd/sc9863a.dtsi:330:            clock-names = 
> "apb_pclk";
> arch/arm64/boot/dts/sprd/sc9863a.dtsi:367:            clock-names = 
> "apb_pclk";

so , if you think it is okay I will keep clock-names and clock in yaml 
file like other platform.

>
>>
>>
>> Best regards,
>> Krzysztof