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Mon, 21 Sep 2026 05:03:40 -0700 (PDT) Received: from oss.qualcomm.com ([86.121.170.232]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fc471b9a2sm147882235e9.0.2026.09.21.05.03.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 05:03:38 -0700 (PDT) Date: Mon, 21 Sep 2026 15:03:36 +0300 From: Abel Vesa To: Kathiravan Thirumoorthy Cc: Bjorn Andersson , Stephen Boyd , Brian Masney , Jerome Brunet , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Georgi Djakov , Konrad Dybcio , Varadarajan Narayanan , Dmitry Baryshkov , Abel Vesa , Gokul Sriram Palanisamy , Sricharan Ramabadhran , Kathiravan T , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 03/11] clk: qcom: ipq5210: add 24MHz rate for USB UTMI clock Message-ID: References: <20260921-ipq_clk_changes-v1-0-d242e3d49648@oss.qualcomm.com> <20260921-ipq_clk_changes-v1-3-d242e3d49648@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: <20260921-ipq_clk_changes-v1-3-d242e3d49648@oss.qualcomm.com> X-Authority-Analysis: v=2.4 cv=SJLXx+vH c=1 sm=1 tr=0 ts=6ab11d1d cx=c_pps a=KB4UBwrhAZV1kjiGHFQexw==:117 a=po8fGBi+ks8MzcVQGuqtFQ==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=JaUoqYncsU2g2DIqJJIA:9 a=CjuIK1q_8ugA:10 a=o1xkdb1NAhiiM49bd1HK:22 X-Proofpoint-GUID: 94LlSEtua8CMYON7OaJGbdsPO2YLBl6a X-Proofpoint-ORIG-GUID: 94LlSEtua8CMYON7OaJGbdsPO2YLBl6a X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIxMDE3NCBTYWx0ZWRfX53dngdGS5ObE GkkxLcq6DgowDjyOs6H/QQhW9+3Ia+OpBFpRlYybA6LO97UNdkVPW+016/e7PNvXesAPTTcmRqT J5LLauJ7QEP09lajXfifMJoheLQyq10= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIxMDE3NCBTYWx0ZWRfXzu/zY9e7ao9J Z9BHFZMFUS1WVIJO/i8Zxi2966T8+FFBS7uWsPn478Um6rQEacExx67NBho1bJM0sD7rz1G0Xf+ 0CFMneS1DJkAI89Bf5I3Ys4GQIWgO+dJ6F7VBiHXQII7rq5Eqltaek9/6stPo+0TKiVAcQFlgLe 0yQPIWEYCRmKBJQOeD/HqUifmeyVXPGY2xPY8dvpHWKx0nbFwDxZwcYa/RgE1cSG46dTJz2Wdp8 8YaYRCENe0FeXUGUlAhkSLJxoQUgFzWId5M8DZoGoa9omMuUHxd8jXfjnT+aTQrjNb7XYigQo5Q yN157cxUCsbVJpAIyR8RrqTdURMza70OMshrHgMiAJ34NCV7jbfaE2vpSlp8oiuWc+1nwL20WPD XHNbA6QKKs0vM8VPPYIrAL8i6647WfTgu9RPUo2w1OD+hMJ6Zt7lMRR59Q090aGNNBTPrLS3CE9 /Md//4bkuXLbK0oYgfg== 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_04,2026-09-16_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 malwarescore=0 adultscore=0 clxscore=1015 bulkscore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609210174 On 26-09-21 11:49:36, Kathiravan Thirumoorthy wrote: > The USB UTMI reference clock must operate at 24 MHz, as recommended > by the hardware team, for reliable USB operation. > > Validation showed that USB 3.2 hub enumeration with USB 2.0 devices > fails when the UTMI reference clock is not configured to the required > 24 MHz rate. Configuring the UTMI reference clock to 24 MHz to resolve > the enumeration failure and ensure successful device detection. > > Cc: stable@vger.kernel.org > Fixes: 844be6e24afd ("clk: qcom: add Global Clock controller (GCC) driver for IPQ5210 SoC") > Signed-off-by: Kathiravan Thirumoorthy Reviewed-by: Abel Vesa