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

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Message-ID: <dd2e6c68-7460-caa1-0d54-53aeb5619a18@loongson.cn>
Date:   Thu, 9 Mar 2023 10:08:55 +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
Subject: Re: [PATCH v1 1/2] dt-bindings: spi: add loongson spi


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
>
>> 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 ?

allOf:
   - $ref: /schemas/spi/spi-controller.yaml#

>
>> +
>> +title: Loongson SPI controller
>> +
>> +maintainers:
>> +  - Yinbo Zhu <zhuyinbo@...ngson.cn>
>> +
>> +allOf:
>> +  - $ref: /schemas/spi/spi-controller.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: loongson,ls2k-spi
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    const: boot
> Drop clock-names, not needed for single entry.

if drop the clock-names entry, the yaml file will compile fail.


root@...r-pc:/home/user/workspace/test/code/www.kernel.org/linux# make 
DT_CHECKER_FLAGS=-m dt_binding_check 
DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml
   LINT    Documentation/devicetree/bindings
   CHKDT   Documentation/devicetree/bindings/processed-schema.json
   SCHEMA  Documentation/devicetree/bindings/processed-schema.json
   DTEX Documentation/devicetree/bindings/spi/loongson,ls-spi.example.dts
   DTC_CHK Documentation/devicetree/bindings/spi/loongson,ls-spi.example.dtb
/home/user/workspace/test/code/www.kernel.org/linux/Documentation/devicetree/bindings/spi/loongson,ls-spi.example.dtb: 
spi@...f0220: Unevaluated properties are not allowed ('clock-names' was 
unexpected)
     From schema: 
/home/user/workspace/test/code/www.kernel.org/linux/Documentation/devicetree/bindings/spi/loongson,ls-spi.yaml
root@...r-pc:/home/user/workspace/test/code/www.kernel.org/linux#

>
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - clock-names
>> +
>> +unevaluatedProperties: false
>
> Best regards,
> Krzysztof