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Thu, 10 Sep 2026 00:29:16 -0700 (PDT) X-Received: by 2002:a05:620a:4409:b0:939:8bc:8826 with SMTP id af79cd13be357-93991702d25mr3078268985a.2.1789025355527; Thu, 10 Sep 2026 00:29:15 -0700 (PDT) Received: from [192.168.202.12] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c28e9aec296sm586663566b.28.2026.09.10.00.29.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 10 Sep 2026 00:29:13 -0700 (PDT) Message-ID: <678b6d96-6a61-4689-afc0-363b7a6f209c@oss.qualcomm.com> Date: Thu, 10 Sep 2026 09:29:10 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/5] PCI: qcom: Add CGC disable workaround for Nord PCIe To: Manivannan Sadhasivam , Krishna Chaitanya Chundru Cc: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , 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, shengchao.guo@oss.qualcomm.com References: <20260909-nord-v3-0-b0a82721c547@oss.qualcomm.com> <20260909-nord-v3-3-b0a82721c547@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTEwMDA4MCBTYWx0ZWRfX1oQbRAeNU2DH aOxBYwaC/Pm0wBtpHS87xA2/vS56umKmZdVkibQO6lZWI7FuTc+6655ir3PySW2Dm4bbEXVduk1 NjCWb4DQuR/thdQEypn5+CnItpBeNPOE12s7nXDlGw2XZrT/xwtPgKykyvJ9g8zeiV7exRRkYTg wjvMWHiPdWal2+oWOnKOnOqpuyfOt7KWzzhLGHvOVZ8Z0EGyYOEx2Kdcwa47ConRLjc2sSHo8nw Fqxa1blD2jpm3dGCdEjr0Kd0OHyeBmNQ7rcrG5eHjmfG70/slxsXiEmgWpEFKJXR1EYlSFgk7er pGaIbAs/MOBSSxK/mdP6EEKbqtpPIwL/UI5gySTffphUWamriySsjijfK6lXU7ok4XwsMfNlv2j u7p36USn8KXZBllYixqkk5hIriWTC5js0Th/Cdg7++f2Q7OZH0V9jRsP24MEexxPeTO3tO4C4Zl fk0dK8uEFN3KdOfpUOQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTEwMDA4MCBTYWx0ZWRfX3kkJiWks9Z3w gDbrLlTdXmecLlJqt60mvmUQISgQ7VMFJbBR8AFpHM9oaiKjIrpZJBShSZqwgT+Uzl4KrVdyrcH UVP1iF0G9C5HLKHlP/yk6dzGP8ByyJ4= X-Proofpoint-ORIG-GUID: IUU_f4fXVf_b77s_X-h4UwWtkmWTdqc9 X-Authority-Analysis: v=2.4 cv=VONIDNPX c=1 sm=1 tr=0 ts=6aa25c4d cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=XiBqvqFe6rftMWUyhawA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-GUID: IUU_f4fXVf_b77s_X-h4UwWtkmWTdqc9 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-2609100080 On 9/10/26 9:20 AM, Manivannan Sadhasivam wrote: > 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. [...] >> +static const struct qcom_pcie_cfg cfg_nord = { > > Can you use DWC IP version instead of SoC name? I'd say it's fine given other implementations of the same DWC IP may not have this clock gating quirk Konrad