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Thu, 03 Sep 2026 11:53:30 -0700 (PDT) Date: Fri, 4 Sep 2026 00:23:21 +0530 From: Mohd Ayaan Anwar To: Maxime Chevallier Cc: Andrew Lunn , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Richard Cochran , Bjorn Andersson , Konrad Dybcio , Maxime Coquelin , Alexandre Torgue , Russell King , linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH RFC 3/9] net: stmmac: qcom-ethqos: fix RGMII_ID mode to use DLL bypass Message-ID: References: <20260612-shikra_ethernet-v1-0-f0f4a1d19929@oss.qualcomm.com> <20260612-shikra_ethernet-v1-3-f0f4a1d19929@oss.qualcomm.com> <42355330-c22a-4fce-98ab-dc22b321ff16@lunn.ch> <82705420-771d-41bf-a4d9-ed94dff86ff0@lunn.ch> 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: X-Proofpoint-GUID: TYVnlJgrUwBb7oVskFw5TsqdkKfWFLQZ X-Authority-Analysis: v=2.4 cv=TqjWQjXh c=1 sm=1 tr=0 ts=6a99c22c cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==: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=jdP34snFAAAA:8 a=bKGmqkx0FprkRVM0NBYA:9 a=CjuIK1q_8ugA:10 a=zZCYzV9kfG8A:10 a=mQ_c8vxmzFEMiUWkPHU9:22 a=jlphF6vWLdwq7oh3TaWq:22 X-Proofpoint-ORIG-GUID: TYVnlJgrUwBb7oVskFw5TsqdkKfWFLQZ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTAzMDE2NSBTYWx0ZWRfX4Z8IB14GbVfo 3gWMIjZU4TLb0l6fqZo8ZpypfbFsk1RcMPiqlmZHLXlsJEtcGZTy78flEuhaeQYIuJ36uiaFTsI 1sj0Ho3QHd8s3j0NJAQAZQUpqeZZasVjeGPSMT+ShtTDyX8OgVY4/vNAJ8O6WF7a5pTCMjZCWUO YIQPI9mU1LaqakeajD0sLxHWVQyJi2n9Y3w2myvWC5Vulf2nM9MyGhjZorrOYRR02QLVDVpQtWd 2j9ANgkNAwck2GddlScB9dUq4RL8MXqyTHrQpUJ+bkPCnGLaS8TaMBPW5or4PULQDwgVogI5CNF Z8YK8Y2FxkGXSLxF3xBGCbmh86BQpyHYhksQii5omkYDvrwRFOQ/yChsrLf2La7UW/CfiFu/qrP KcJILLZGXWcfeoQz//rKbxw7EdE5/DG/LqlmCOfcxzOqU4IhdgLrgM03PwXeB0CB6wYgoMNOfPc fMz7pUydm5JWHFW9n0Q== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTAzMDE2NSBTYWx0ZWRfXw8EC/vsiLZwr awWSRsW5l47KrVffvREnELuIVKipPPMrcK7sYu3SrEecXuMjnhemzRbUjWz9/fhteCVudn4rXsH tON/L9hKx6XGoTI35olcwPhfJFUB2u0= 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=2026-09-03_05,2026-09-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 malwarescore=0 spamscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609030165 Hi Maxim, On Mon, Aug 31, 2026 at 07:01:04PM +0200, Maxime Chevallier wrote: > > I've been able to get my hands on a qualcomm devkit for ipq8064 : > > Compex WPQ864 6A02, has the IPQ8064 connected to a QCA8337 switch > through both the ports, one using RGMII (no ID), and one with SGMII. > > The DT is downstream, in OpenWRT : > > https://git.openwrt.org/openwrt/openwrt/tree/target/linux/ipq806x/dts/qcom-ipq8064-ap148.dts#n198 > > happy to help in some testing as well if needed, this board is going > in my CI for stmmac stuff. > That's great. I think this board uses the dwmac-ipq806x driver? It would be interesting to know if it also does the whole "use RGMII so that the MAC can manage the delay" thing. While I don't have access to IPQ boards I will try to figure out what this driver is doing (hopefully I can track down some documentation about the "NSS_COMMON_CLK_GATE*" registers it programs. Nice to hear about your expanding arsenal of stmmac boards :). Ayaan