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Mon, 28 Sep 2026 03:57:06 -0700 (PDT) Date: Mon, 28 Sep 2026 16:26:59 +0530 From: Mohd Ayaan Anwar To: Krzysztof Kozlowski Cc: Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Lorenzo Bianconi , Shawn Guo , Zhangfei Gao Subject: Re: [PATCH 1/3] dt-bindings: phy: qcom,sa8775p-dwmac-sgmii-phy: add Nord compatible Message-ID: References: <20260923-nord_ethernet_serdes-v1-0-f8ac1c487882@oss.qualcomm.com> <20260923-nord_ethernet_serdes-v1-1-f8ac1c487882@oss.qualcomm.com> <20260928-gregarious-deft-boar-e776ae@quoll> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260928-gregarious-deft-boar-e776ae@quoll> X-Authority-Analysis: v=2.4 cv=Sq4Fe/O0 c=1 sm=1 tr=0 ts=6aba4804 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=Sf7_UopSgax0LG51KRsA:9 a=CjuIK1q_8ugA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-GUID: GIewXkHT1zAvJwghBvb5LShxU4uJrulA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfX6k6DyPDpNsMR LOHY4sOyYMa+1iU9474HrAmU8epGHu3F6QkcWW5uNGJqIPMWIuk2soIoOiRyb9OrUoIyStdN1t8 zvJ2rdvFTa6WSzxD9lKSPD8n0xRysY+JMZsH/X1X6IYIC25J8SRebtJ5d7La1EAYMJhTQ2tYNSl Hguk7qRWpWIVv6KcdNrYEdBLG7FdGF9kUi1uvQmgUOSBAZCLS/IFCxZn5NWLxMqJhl7dJx/yLYV I5DZLBAA/SK+QrN9m6s+Hc4ye0JmyAYTRJotaHJeqKokg/gwwN+PV++M5dLN47DQpqsUql6E8Iz sQMsbdyIhoX/THhqf8KsAI477+rKvBFJoYiBL/SXAPhOrp9sQy7ObHhPoyJMUo7bvF/DkEi9Y6S x5iY4TZNxWAEaF9sHVWG+a2sf2o0D0ntWQqcpaI32m518IRfc1Rx8rU0h3wCwpkiyobuOJF9/Sp x02KN/AMy+jgvuzaQUA== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfXx2FBqQ/8G8dS QFDncJK+vaMH3rq7Uzc2my8WrQAHFStEQimG6eRRtlYI3tcFly6T9zWIb/Lt6BygEVFyv9fEi7d iFs4s8Ie/SvPbc/EGqEhhu/Zo2rJfBQ= X-Proofpoint-ORIG-GUID: GIewXkHT1zAvJwghBvb5LShxU4uJrulA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-28_02,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 malwarescore=0 adultscore=0 phishscore=0 spamscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609280043 On Mon, Sep 28, 2026 at 12:16:45PM +0200, Krzysztof Kozlowski wrote: > On Wed, Sep 23, 2026 at 05:34:17AM +0530, Mohd Ayaan Anwar wrote: > > Add the qcom,nord-dwmac-sgmii-phy compatible to the Qualcomm DWMAC > > SGMII PHY binding. > > Why random order? Why not enum with existing part? You are right. I will group the stanalone compatibles into a single enum and sort them alphabetically in v2. > Why not even compatible with existing device? Nord uses the QMP v7 SerDes register layout, whereas sa8775p uses the v5 layout. The offsets differ, so Nord cannot use qcom,sa8775p-dwmac-sgmii-phy as a fallback compatible. > > So many questions, yet commit msg copies subject. > Sorry about that. I mentioned the QMP v7 details in the cover letter but forgot to include them in the commit message. I will expand the commit message in v2 to describe the hardware differences and explain why there is no fallback compatible. Thank you for the review. Ayaan