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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-arm-msm@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-ORIG-GUID: ymKBU7SJCBFabDms1NdHmH6mNqLy8reM X-Proofpoint-GUID: ymKBU7SJCBFabDms1NdHmH6mNqLy8reM X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfX5HLcqHc4uRX6 ccMQSadKt2YIoLzzGhcQDyyuifZl9OdqXCus4i8O23/9mJdWm/4ASBqwPhePQnnaY2os47w5jVp 5dC7eNfrswtk0Yu2bv8ULNcW4o3jODvX4lgNBHbDUWcxMAfhH1RluZtPoFUdhwinrnPu8O8vy9G +y4PGEprmFFsZV1rFtoddDNOLQSY5u3TBdyrVjXXYCVj6ihSlurI1PB/5ZXjGt3jsnwgTqXxT2w OxbvXK/MgaTVDlioiRB4XrLbNtyOwXbNbqCJvJVO1zjrOM+GSovxl+A4IrY45hYj0MjjspWWOxc 9qWqePgt1nBTO3hNpizBgKWiLXQUb7HIGO2oFsX+8ea/6QDV33GXJaaowBblJVQ7HuKfdbUwbTl lFkuPa+iNRaL79BkrRJ1yZAKP8/eIGgm9dkflVXcyk4jYQPyk+bV5oYmh0Z2oyQIORYZeN3JbRO 49FheQZnfpWxdXq+OIw== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI4MDA0MyBTYWx0ZWRfX08AmpHIZu4c1 44o5DJGA5EAVa2Fy+awQRqD+srvF5f65U2QIKfB7KWm6bjs2t7ELO4NzuxUehqm+y2pP842xl0c TSQeEhyIZ8IbLibSnQ4yFFrF1vzMiYg= X-Authority-Analysis: v=2.4 cv=asYnmiZV 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=ZpdpYltYx_vBUK5n70dp:22 a=Sf7_UopSgax0LG51KRsA:9 a=CjuIK1q_8ugA:10 a=rl5im9kqc5Lf4LNbBjHf:22 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 phishscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 clxscore=1015 adultscore=0 bulkscore=0 malwarescore=0 spamscore=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