linux-kernel - Re: RFC: Advice on adding support for Qualcomm IPQ9574 SoC Ethernet

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Message-ID: <664a3cc0-8274-43f8-88e7-fff7b650205d@linaro.org>
Date: Fri, 4 Oct 2024 16:03:11 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: "Kiran Kumar C.S.K" <quic_kkumarcs@...cinc.com>,
 Andrew Lunn <andrew@...n.ch>
Cc: netdev@...r.kernel.org, Andy Gross <agross@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
 Russell King <linux@...linux.org.uk>, Jacob Keller
 <jacob.e.keller@...el.com>, Bhupesh Sharma <bhupesh.sharma@...aro.org>,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, vsmuthu@....qualcomm.com,
 arastogi@....qualcomm.com, linchen@....qualcomm.com, john@...ozen.org,
 Luo Jie <quic_luoj@...cinc.com>, Pavithra R <quic_pavir@...cinc.com>,
 "Suruchi Agarwal (QUIC)" <quic_suruchia@...cinc.com>,
 "Lei Wei (QUIC)" <quic_leiwei@...cinc.com>
Subject: Re: RFC: Advice on adding support for Qualcomm IPQ9574 SoC Ethernet

On 04/10/2024 15:06, Kiran Kumar C.S.K wrote:
>>> The MII Rx/Tx clocks are supplied from the NSS clock controller to the
>>> PCS's MII channels. To represent this in the DTS, the PCS node in the
>>> DTS is configured with the MII Rx/Tx clock that it consumes, using
>>> macros for clocks which are exported from the NSS CC driver in a header
>>> file. So, there will be a compile-time dependency for the dtbindings/DTS
>>> on the NSS CC patch series. We will clearly call out this dependency in
>>> the cover letter of the PCS driver. Hope that this approach is ok.
>>
>> Since there is a compile time dependency, you might want to ask for
>> the clock patches to be put into a stable branch which can be merged
>> into netdev.
>>
> 
> Sure. We will request for such a stable branch merge once the NSS CC
> patches are accepted by the reviewers. Could the 'net' tree be one such
> stable branch option to merge the NSS CC driver?

NAK.

This is not needed and cannot happen.

Best regards,
Krzysztof