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Message-ID: <b0a079e8-943c-41cf-8d07-71087d08356c@quicinc.com>
Date: Thu, 26 Dec 2024 09:13:06 +0800
From: Yijie Yang <quic_yijiyang@...cinc.com>
To: Andrew Lunn <andrew@...n.ch>
CC: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Vinod Koul
<vkoul@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller"
<davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
<kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Rob Herring
<robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley
<conor+dt@...nel.org>,
Bhupesh Sharma <bhupesh.sharma@...aro.org>,
Alexandre
Torgue <alexandre.torgue@...s.st.com>,
Giuseppe Cavallaro
<peppe.cavallaro@...com>,
Jose Abreu <joabreu@...opsys.com>,
Maxime Coquelin
<mcoquelin.stm32@...il.com>, <netdev@...r.kernel.org>,
<linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 1/3] dt-bindings: net: qcom,ethqos: Drop fallback
compatible for qcom,qcs615-ethqos
On 2024-12-26 00:17, Andrew Lunn wrote:
> On Wed, Dec 25, 2024 at 04:58:20PM +0800, Yijie Yang wrote:
>>
>>
>> On 2024-12-24 17:02, Krzysztof Kozlowski wrote:
>>> On 24/12/2024 04:07, Yijie Yang wrote:
>>>> The core version of EMAC on qcs615 has minor differences compared to that
>>>> on sm8150. During the bring-up routine, the loopback bit needs to be set,
>>>> and the Power-On Reset (POR) status of the registers isn't entirely
>>>> consistent with sm8150 either.
>>>> Therefore, it should be treated as a separate entity rather than a
>>>> fallback option.
>>>
>>> ... and explanation of ABI impact? You were asked about this last time,
>>> so this is supposed to end up here.
>>
>> I actually replied to this query last time, but maybe it wasn't clear.
>> Firstly, no one is using Ethernet on this platform yet. Secondly, the
>> previous fallback to sm8150 is incorrect and causes packet loss. Instead, it
>> should fall back to qcs404.
>
> One of the purposes of the commit message is to answer questions
> reviews might have. You were even asked this question, so that should
> of been a clue to include the answer in the commit message.
>
I will include it in the commit message in the next version.
> Andrew
--
Best Regards,
Yijie
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