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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b96da58b66dsm369600066b.42.2026.03.10.04.47.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 Mar 2026 04:47:24 -0700 (PDT) Message-ID: Date: Tue, 10 Mar 2026 12:47:22 +0100 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/7] clk: qcom: gcc-sc8180x: Use retention for USB power domains To: Val Packett , Bjorn Andersson , Michael Turquette , Stephen Boyd Cc: Konrad Dybcio , Johan Hovold , Manivannan Sadhasivam , Dmitry Baryshkov , Maximilian Luz , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260309010214.224621-1-val@packett.cool> <20260309010214.224621-4-val@packett.cool> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260309010214.224621-4-val@packett.cool> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: iy51C4XD2CqQ5oqBZLrKwDKYyufh5CS3 X-Proofpoint-ORIG-GUID: iy51C4XD2CqQ5oqBZLrKwDKYyufh5CS3 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEwMDEwMiBTYWx0ZWRfX0a1vYP2BiTpu 1n8072BTB1LLYT/jaTV6BtaHRlwrjx1SQWb3TowblQKROMLE1/W2LVeRUfCs3aRE0zgP+pv2P1A +rQ8tMkqMHzU+VFq6MVdjYVmhBzsaFb9O1o6FNnYbRApeiPZZ9hRqaFSxxW9YsRuP9r/opu/590 KdI1p+h2OSbbpPi4Dct04RiIUa+0gK1hnr3cIa0rVzg0ecQwc/RcR3bbUKKdr4oDIgWvlQGqosV 8hsZnASQAqu+2dvX0n8cHnDxfuR6FDa365NASaV/AKWYSupxIYb1B4GU8Xc8DoJq/mJ3NdZVv/h f8BOG3I7Zyr5WkIy3awevf39sEvgw2/Y3AyylVAH63oAeHwGhnpMYHtwxbgTMQx881c5ou4PXHG R+XMYHrRFThnO/LEA5II1Ebj8LOHTHhroXkvK+4TYU8CvPU8F0X4vjrWB5RMTdST4dNXurf/pUN A+kWVeIKFliXrF9RLBw== X-Authority-Analysis: v=2.4 cv=eIEeTXp1 c=1 sm=1 tr=0 ts=69b004cf cx=c_pps a=wEM5vcRIz55oU/E2lInRtA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=M0n0xMwgRafrvhQXqkIA:9 a=QEXdDO2ut3YA:10 a=OIgjcC2v60KrkQgK7BGD:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-10_02,2026-03-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603100102 On 3/9/26 2:00 AM, Val Packett wrote: > The USB subsystem does not expect to lose its state on suspend: > > xhci-hcd xhci-hcd.0.auto: xHC error in resume, USBSTS 0x401, Reinit > usb usb1: root hub lost power or was reset > > (The reinitialization usually succeeds, but it does slow down resume.) > > To maintain state during suspend, the relevant GDSCs need to stay in > retention mode, like they do on other similar SoCs. Change the mode to > PWRSTS_RET_ON to fix. > > Fixes: 4433594bbe5d ("clk: qcom: gcc: Add global clock controller driver for SC8180x") > Signed-off-by: Val Packett > --- Take a mental note that this is a workaround and one day we'll get rid of it Reviewed-by: Konrad Dybcio Konrad