linux-kernel - Re: [PATCH 1/2] dt-bindings: pwm: sophgo: add bindings for sg2042

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Message-ID:
 <MA0P287MB28227F2A65ADCC493499B7CEFE992@MA0P287MB2822.INDP287.PROD.OUTLOOK.COM>
Date: Mon, 9 Sep 2024 08:29:15 +0800
From: Chen Wang <unicorn_wang@...look.com>
To: Yixun Lan <dlan@...too.org>, Chen Wang <unicornxw@...il.com>
Cc: ukleinek@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, inochiama@...look.com, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org,
 linux-riscv@...ts.infradead.org, chao.wei@...hgo.com,
 haijiao.liu@...hgo.com, xiaoguang.xing@...hgo.com, chunzhi.lin@...hgo.com
Subject: Re: [PATCH 1/2] dt-bindings: pwm: sophgo: add bindings for sg2042


On 2024/9/6 10:44, Yixun Lan wrote:
> On 20:10 Thu 05 Sep     , Chen Wang wrote:
>> From: Chen Wang <unicorn_wang@...look.com>
>>
>> Add binding document for sophgo,sg2042-pwm.
>>
>> Signed-off-by: Chen Wang <unicorn_wang@...look.com>
>> ---
>>   .../bindings/pwm/sophgo,sg2042-pwm.yaml       | 52 +++++++++++++++++++
>>   1 file changed, 52 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml b/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
>> new file mode 100644
>> index 000000000000..10212694dd41
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pwm/sophgo,sg2042-pwm.yaml
>> @@ -0,0 +1,52 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/pwm/sophgo,sg2042-pwm.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Sophgo SG2042 PWM controller
>> +
>> +maintainers:
>> +  - Chen Wang <unicorn_wang@...look.com>
>> +
>> +description: |
> you can drop | here
Ack and thanks.
>> +  This controller contains 4 channels which can generate PWM waveforms.
>> +
>> +allOf:
>> +  - $ref: pwm.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: sophgo,sg2042-pwm
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    items:
>> +      - const: apb
>> +
>> +  "#pwm-cells":
> ..
>> +    # See pwm.yaml in this directory for a description of the cells format.
> I think you can drop this comment, since no useful information added
> also it's already refered to standard pwm.yaml
I add this comment just want to reminder.  Ok, anyway, it can be removed 
to make doc clear.
>> +    const: 2
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - clock-names
> also "#pwm-cells"?
I think it has been required in pwm.yaml, so no need to required it 
again here.
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    pwm@...06000 {
>> +        compatible = "sophgo,sg2042-pwm";
>> +        reg = <0x7f006000 0x1000>;
>> +        #pwm-cells = <2>;
>> +        clocks = <&clock 67>;
>> +        clock-names = "apb";
>> +    };
>> -- 
>> 2.34.1
>>