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Wed, 09 Sep 2026 06:00:18 -0700 (PDT) X-Received: by 2002:a05:6102:4b13:b0:78d:3ee3:c558 with SMTP id ada2fe7eead31-78d3ee3c590mr2591535137.1.1788958818116; Wed, 09 Sep 2026 06:00:18 -0700 (PDT) Received: from [192.168.202.12] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5b667b6c30fsm3387051e87.9.2026.09.09.06.00.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Sep 2026 06:00:17 -0700 (PDT) Message-ID: <978dee45-827e-4fbf-a574-8c61c7e0e097@oss.qualcomm.com> Date: Wed, 9 Sep 2026 15:00:15 +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 v7 5/5] usb: dwc3: qcom: Modify interrupt handling for eUSB2 Phy targets To: Krishna Kurapati , Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thinh Nguyen , Greg Kroah-Hartman Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org References: <20260905-eusb2-interrupt-v7-v7-0-820cf5377a70@oss.qualcomm.com> <20260905-eusb2-interrupt-v7-v7-5-820cf5377a70@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260905-eusb2-interrupt-v7-v7-5-820cf5377a70@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: kD8Yj81HRqmbuOzoRkvQqm6pw_KJQ5s_ X-Proofpoint-GUID: kD8Yj81HRqmbuOzoRkvQqm6pw_KJQ5s_ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA5MDE0NSBTYWx0ZWRfXz74TRQvEarQr 5VE8ay2rhopVSGJxOLaIEqr0x8KE8jBAtVw1tgnCxCh5ZkQOWUEJIVRF1EJo0M/NmOVfEMk8PYU oRyVH8iFBtrxinMxQt1qJfdHQEHVNX0ySK6EcOkXWunAw6V2zw+Otz+foZlEW1T2ikG2SieJzLH YQbs/+TVZHQQ9FB4a+rbgP05Lc4jTiYB7SRyAme4ZkAqikIKaYnYRr5gqY+xMceKbuuxxqoBdWP s10v3iE7ZAAPm6JpsOqes20gkh2mhP7gN+P4S+AHJ5L1REiHFevVfk8GrGiyWWcjohrvjS7DTzR O8w4SDBLjej3q+zsIDZwACVBd5VphEjjfv0Y+w7kCNfjveQMcdYGNpTYhpSwuzvhsGMK71EHWrT G+yffhqyKHQDph2cjXZkebBEWUKSeprmjRMRgxDgqle/E1Z0Kog0I2PAc2I/HaLKG47UhlaVQlH E8VXrNlgbX8VfCyst/w== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA5MDE0NSBTYWx0ZWRfX/D1eooNTiD2F 80AT+AaYbu9QXwouBneJjNZ6ebLYfPIqcf8CLZgLuqsCni+mFZ0HFb+Me3YgFh+JhCX0M6YAewz fPCEW44vjMWluGhndSJgNGAnquJGOeo= X-Authority-Analysis: v=2.4 cv=f/p4wuyM c=1 sm=1 tr=0 ts=6aa15863 cx=c_pps a=5HAIKLe1ejAbszaTRHs9Ug==: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=EUspDBNiAAAA:8 a=FycFWezSpWEMHrBiXq0A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=gYDTvv6II1OnSo0itH1n:22 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=2026-09-08_03,2026-09-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1015 phishscore=0 lowpriorityscore=0 spamscore=0 suspectscore=0 adultscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609090145 On 9/5/26 5:29 PM, Krishna Kurapati wrote: > eUSB2 targets handle wakeup interrupts differently depending on device > speed when operating in host mode. > > According to the eUSB2 specification, remote wakeup signaling in host > mode is detected via different data-line assertions based on the > connected device speed. [...] > @@ -628,6 +649,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) > int ret; > bool ignore_pipe_clk; > bool wakeup_source; > + struct phy *phy; > > qcom = devm_kzalloc(&pdev->dev, sizeof(*qcom), GFP_KERNEL); > if (!qcom) > @@ -698,6 +720,17 @@ static int dwc3_qcom_probe(struct platform_device *pdev) > if (ret) > goto clk_disable; > > + phy = devm_of_phy_get_by_index(dev, dev->of_node, 0); > + if (IS_ERR(phy)) { > + if (PTR_ERR(phy) != -ENODEV) { GPT reports: When CONFIG_GENERIC_PHY is disabled, the stub in include/linux/phy/phy.h:489-493 returns ERR_PTR(-ENOSYS). The patch only treats -ENODEV as “no PHY”: But it's not like one can really use this driver without a PHY.. We can add a follow-up to depend on that for the qcom driver otherwise Acked-by: Konrad Dybcio Konrad