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[199.106.103.52]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339aa37dbdsm42950318eec.11.2026.09.09.23.47.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 23:47:31 -0700 (PDT) Date: Thu, 10 Sep 2026 14:47:24 +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, Konrad Dybcio Subject: Re: [PATCH v3 3/5] PCI: qcom: Add CGC disable workaround for Nord PCIe Message-ID: References: <20260909-nord-v3-0-b0a82721c547@oss.qualcomm.com> <20260909-nord-v3-3-b0a82721c547@oss.qualcomm.com> 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: <20260909-nord-v3-3-b0a82721c547@oss.qualcomm.com> X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTEwMDA3MSBTYWx0ZWRfXyhubzeThCYyv wILzSoXfTjWCKwjrGULN57HK5EOQAaa5zqZcAr0LbR+wWJpx/DHIEIZW/am1M3OSdgYlssHuXv0 n2YYHsH2PhPMFUN5AuLGBHEdFFhWYqualqYcBB9Q2sKzedc/xBNDrv1amEWvmBcV0fMPx7h9yyW yZ74EyLKMjscqDvL+Jd3uASV0QsBzTPq1/lqwBfMOaMKLqO06wQqHS9kcSWx5Qn8m3ZgeKqW/0/ EKxQwLm64PqUWPTujZa5L2X+6JUh8XIRY/m6KtjhtCCI+cc0Z3IQG3yqd6vcnfBq2TO3ITEdd+F MgYMu93g8LP8Yj0ZJx0XvHzljAKjh+whIW7xDSwA3pIkkFkh9hEcPvxulZ9kP5RLEkaB/7Jq8uj l8xrY4iceARcDVM0jmltZeKKTpQGJ/EwDXDu6W8iyqRkiaAT7W3JkrllsyQ6Ba55eNJJiUapa8I dnI91dryXyzJ3ByLExQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTEwMDA3MSBTYWx0ZWRfX9bWYt1nrB+7+ wvjfQ0VHoeMkxIio1WRKxIRUsV9mVpUANEt2BLZRBnLYDEeeOSKm9hOgI1fRDoiipVUGyF9Uh3H MXwHN7QKxAAFhkgJKAbN6iXhWELu88U= X-Proofpoint-ORIG-GUID: DqkEK7k4BuQTeYSzYZIrxW1MVoesUZOa X-Authority-Analysis: v=2.4 cv=VONIDNPX c=1 sm=1 tr=0 ts=6aa25285 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=b9+bayejhc3NMeqCNyeLQQ==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=Y4sVft1UDeOkrP7wHAgA:9 a=CjuIK1q_8ugA:10 a=zZCYzV9kfG8A:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-GUID: DqkEK7k4BuQTeYSzYZIrxW1MVoesUZOa 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=2026-09-10_02,2026-09-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 phishscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609100071 On Wed, Sep 09, 2026 at 05:18:18PM +0530, Krishna Chaitanya Chundru wrote: > Nord requires a workaround to address a timing convergence issue in the > PCIe power domain. To avoid the issue, set the CORE_CLK_CGC_DIS and > AUX_PWR_DET bits in PARF_SYS_CTRL after controller initialization. > > The SLV_ACLK_CGC_DIS bit is already configured by hardware reset. This > change adds the remaining required settings as documented in > QCTDD11972446. > > Reviewed-by: Konrad Dybcio > Signed-off-by: Krishna Chaitanya Chundru Reviewed-by: Shawn Guo