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[199.106.103.52]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33e6129b37csm3678940eec.15.2026.09.22.01.13.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 01:13:05 -0700 (PDT) Date: Tue, 22 Sep 2026 16:12:58 +0800 From: Shawn Guo To: Krishna Chaitanya Chundru Cc: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Manivannan Sadhasivam , Bjorn Helgaas , Bjorn Andersson , Maxime Chevallier , Philipp Zabel , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [PATCH v4 6/6] phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support Message-ID: References: <20260921-nord-v4-0-ed05c6e09240@oss.qualcomm.com> <20260921-nord-v4-6-ed05c6e09240@oss.qualcomm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260921-nord-v4-6-ed05c6e09240@oss.qualcomm.com> X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIyMDExNiBTYWx0ZWRfXzECuBud6SX35 KwjEppNHlf5+TJ6xhLVkRcnwFv5uwGOykAtM5VwAZVBvPlbaJLLEF9Ewh9w7GijruitfjEirSCz 33aZSBVMpmevV3OQdd+MTm+648NnUNMBoR88Cq7yWqsgd24XwpPiPnh+YcHLMhfGegjv8xOSJAQ jl5EBrYTx4PGWa2ytMF1ruQN2pdolbH5SB5ebQ+1RwsIbw2R1cpVnw7uywUewdMa8g+7W5kqX6Z jaKGjMEDpb+lOE43AB181sG4reyhVClGYp6Z0ze6youPQP7VjjFTHfZ1LUIcKFt/eBnK9WQMB+Y EWO1NPps5Fxfs7h5qwQrYcCJt5G4JMctuQvWcUSQAqu0RabwPXg+yZFOKHD7RdNRoyNPIcTjY1J vy5Nn+GgpnMGGekAooy1KLyqJFzolUKx7/Hkj67Z93DJiwxlVEz3/v5y6bDJsG7cMk22my288x0 IlS0GQ/AmA8HX84t2MQ== X-Authority-Analysis: v=2.4 cv=IYYSymqa c=1 sm=1 tr=0 ts=6ab23893 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=b9+bayejhc3NMeqCNyeLQQ==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=Y4sVft1UDeOkrP7wHAgA:9 a=CjuIK1q_8ugA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIyMDExNiBTYWx0ZWRfX9OaZn9BkNFJ4 k9jPeYeu7CCyEO5Hqozs7xYwtHl9IoxH+S+u1i4oaYtqCqd2rpnlr6N7Ub05s4TwZgvXGcCWpRn 8zpGwymlOWdO9IfpAJ3kOXUigtev4qk= X-Proofpoint-ORIG-GUID: EP7UqP4OmbXyyw0XCKrjliVgSYu8spS4 X-Proofpoint-GUID: EP7UqP4OmbXyyw0XCKrjliVgSYu8spS4 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=2026-09-21_07,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 spamscore=0 phishscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609220116 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260922_011308_879379_776A812D X-CRM114-Status: GOOD ( 16.32 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On Mon, Sep 21, 2026 at 11:07:14AM +0530, Krishna Chaitanya Chundru wrote: > Add support for the Nord Gen5x16 bifurcated QMP PCIe PHY. > > Nord has a single PCIe PHY block split into four ports which can be > used in multiple lane configurations: x16, x8+x8, x8+x4+x4 and > x8+x4+x2+x2. The active topology is selected through the link mode > configuration register, and the driver exposes the corresponding PHY > instances based on that mode. > > Unlike Glymur, where the PHY is initialized by firmware, Nord requires > Linux to program the PHY registers. Add the PLL, TXRXZ, PCS and PCS > lane initialization tables, along with the required power-up, > power-down and soft-reset sequencing. > > Add per-port and grouped PHY configurations for all supported Nord > lane modes. Also add support for regular PHY resets in addition to the > NOCSR reset. > > Signed-off-by: Krishna Chaitanya Chundru Reviewed-by: Shawn Guo -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy