linux-kernel - Re: [PATCH 09/15] dt-bindings: reset: Document ma35d1 reset controller bindings

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Date:   Thu, 16 Mar 2023 08:39:00 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jacky Huang <ychuang570808@...il.com>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, lee@...nel.org,
        mturquette@...libre.com, sboyd@...nel.org, p.zabel@...gutronix.de,
        gregkh@...uxfoundation.org, jirislaby@...nel.org
Cc:     devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        schung@...oton.com, Jacky Huang <ychuang3@...oton.com>
Subject: Re: [PATCH 09/15] dt-bindings: reset: Document ma35d1 reset
 controller bindings

On 16/03/2023 08:37, Krzysztof Kozlowski wrote:
> On 15/03/2023 08:28, Jacky Huang wrote:
>> From: Jacky Huang <ychuang3@...oton.com>
>>
>> Add documentation to describe nuvoton ma35d1 reset driver bindings.
> 
> Subject: drop second/last, redundant "bindings". The "dt-bindings"
> prefix is already stating that these are bindings.
> 
>>
>> Signed-off-by: Jacky Huang <ychuang3@...oton.com>
>> ---
>>  .../bindings/reset/nuvoton,ma35d1-reset.yaml  | 50 +++++++++++++++++++
>>  1 file changed, 50 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml b/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
>> new file mode 100644
>> index 000000000000..f66c566c6dce
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
>> @@ -0,0 +1,50 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/reset/nuvoton,ma35d1-reset.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Nuvoton MA35D1 Reset Controller
>> +
>> +maintainers:
>> +  - Chi-Fang Li <cfli0@...oton.com>
>> +  - Jacky Huang <ychuang3@...oton.com>
>> +
>> +description:
>> +  The system reset controller can be used to reset various peripheral
>> +  controllers in MA35D1 SoC.
>> +
>> +properties:
>> +  compatible:
>> +    const: nuvoton,ma35d1-reset
>> +
>> +  regmap:
>> +    $ref: /schemas/types.yaml#/definitions/phandle
>> +    description: Phandle to the register map node.
> 
> You need to be specific what is this. As you can easily check, there is
> no such property in any devices. I don't understand why do you need it
> in the first place.
> 
>> +
>> +  '#reset-cells':
>> +    const: 1
>> +
>> +required:
>> +  - compatible
>> +  - regmap
>> +  - '#reset-cells'
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  # system reset controller node:
>> +  - |
>> +    #include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
>> +
>> +    sys: system-management@...60000 {
>> +        compatible = "nuvoton,ma35d1-sys", "syscon", "simple-mfd";
> 
> And your patchset is not bisectable.... Test for bisectability before
> sending.

Ah, no, it's correct. I see the compatible in previous patch. You need
to clearly describe the dependencies and merging strategy/requirements
in cover letter.

Best regards,
Krzysztof