linux-kernel - Re: [PATCH v4 1/3] dt-bindings: phy: Add starfive,jh7110-dphy-rx

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Message-ID: <b05a43df-1138-3dbd-08a9-0f2bc9b74807@starfivetech.com>
Date:   Thu, 13 Apr 2023 09:29:25 +0800
From:   Changhuang Liang <changhuang.liang@...rfivetech.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Conor Dooley <conor@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC:     Jack Zhu <jack.zhu@...rfivetech.com>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v4 1/3] dt-bindings: phy: Add starfive,jh7110-dphy-rx



On 2023/4/13 0:55, Krzysztof Kozlowski wrote:
> On 12/04/2023 14:42, Changhuang Liang wrote:
>>
>>
>> On 2023/4/12 19:34, Krzysztof Kozlowski wrote:
>>> On 12/04/2023 10:45, Changhuang Liang wrote:
>>>> StarFive SoCs like the jh7110 use a MIPI D-PHY RX controller based on
>>>> a M31 IP. Add a binding for it.
>>>
>>> So this is D-PHY? Or the other patch is D-PHY? The naming is quite
>>> confusing and your commit msgs are not helping here.
>>>
>>> Also the power domain phandle here adds to the confusion.
>>>
>>
>> Yes, this is DPHY, DPHY has rx and tx, and last version we are discussing that 
>> use power domain replace syscon:
>> https://lore.kernel.org/all/5dc4ddc2-9d15-ebb2-38bc-8a544ca67e0d@starfivetech.com/
> 
> The other patch - DPHY PMU - is confusing. Instead of writing short
> commits, explain more.
> 

OK, I will add more commit message in DPHY PMU dt-binding patch, for example:

dt-bindings: power: Add JH7110 DPHY PMU support.

Add DPHY PMU for StarFive JH7110 SoC, it can be used to turn on/off DPHY rx/tx
power switch, and it don't need the reg and interrupt properties.

I think this commit message will helpful for you to distinguish them.

>>
>>>>
>>>> Signed-off-by: Changhuang Liang <changhuang.liang@...rfivetech.com>
>>>> ---
>>>>  .../bindings/phy/starfive,jh7110-dphy-rx.yaml | 85 +++++++++++++++++++
>>>>  1 file changed, 85 insertions(+)
>>>>  create mode 100644 Documentation/devicetree/bindings/phy/starfive,jh7110-dphy-rx.yaml
>>>>
>> [...]
>>>> +
>>>> +  power-domains:
>>>> +    maxItems: 1
>>>> +
>>>> +  lane_maps:
>>>
>>> Why did this appear? Underscores are not allowed. It looks like you
>>> re-implement some standard property.
>>>
>>
>> Will change to lane-maps.
>> Yes, according to Vinod advice, lane mapping table use device tree
>> to parse makes sense.
> 
> Hm, I have a feeling that I saw such property, so you should dig into
> existing and in-flight bindings.
> 
> Best regards,
> Krzysztof
>