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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: linux-kernel@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-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfX9cavuWBge40P EPuGea1o8UmQfXzQ4B/JRbgyWO2lezuFANEFLnakzv3VKozc95NrtYS8IXFgcsWzVTGaaFV9EAw nOUgJVCvvDRLLQOxKT76hSxGFJxZWSqLN0uY5WrN9aAPA3C53KHdWXlFkRFQw+zNmmv8UJW1j4s OzlVMQ+pZ4TLvbqw8aPc/ppNuZaVHjf0F6yk4kvvAmy5Zz/qV21L0AqMN5a7BN8rptCpRkEXmOV IId+5Vb+qIqBEKjQ7bVJ68KYIZ/CQfCbsBDW+5iKuQD//zJl5rbr2zcraJtl/uZc0odBDcfv3NO xURDLrADppy4RBDClpZrA3k2VK8Nms+imuY92nQDqoCkmaVMpxppl2/b/iCWkKcmgOd+7G0jHQH Zdsn1S7uYHM1QrPdUbPL6sPGlLWLF9kLCY9CDvdLszHUE9cP0VperWC6UA2KAUimaxNuDiDxZDP HzzIA0lLb+jex26BQNQ== X-Authority-Analysis: v=2.4 cv=V8foQuni c=1 sm=1 tr=0 ts=6aba4804 cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=Sf7_UopSgax0LG51KRsA:9 a=CjuIK1q_8ugA:10 a=rl5im9kqc5Lf4LNbBjHf:22 X-Proofpoint-ORIG-GUID: CeN1rdODsEYdOYirucQtnkW22klzaZd- X-Proofpoint-GUID: CeN1rdODsEYdOYirucQtnkW22klzaZd- X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfX953Nd+SxBLSo WczanMrMJeytcDDZdPL/pLmUP5grlgWTnSRusSxPLVupkvb8/mssmQxoJKSBg6cAYhRQWi8lQ8s B9xGawkImce8+oBiHRbJkhnws2vpa1c= 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 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 impostorscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 suspectscore=0 adultscore=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