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Thu, 30 Jul 2026 09:52:04 -0700 (PDT) X-Received: by 2002:a05:622a:a98d:20b0:51b:f40b:2faf with SMTP id d75a77b69052e-52b42cfd32dmr12298711cf.4.1785430323655; Thu, 30 Jul 2026 09:52:03 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a07cb79672sm971478a12.13.2026.07.30.09.51.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Jul 2026 09:52:01 -0700 (PDT) Message-ID: <29de839d-707e-499d-a90b-36aaca0bebec@oss.qualcomm.com> Date: Thu, 30 Jul 2026 18:51:58 +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 0/5] usb: typec: ps883x: fixes for older Thunderbolt 4 / USB4 docks To: Jens Glathe , Sebastian Reichel Cc: "Dr. David Alan Gilbert" , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Abel Vesa , Heikki Krogerus , Bjorn Andersson , Konrad Dybcio , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, stable@vger.kernel.org References: <20260718-ps883x-disable-usb4-v1-0-cec86d0b909e@oldschoolsolutions.biz> <41222b67-19e5-4f74-b4aa-928d05db9675@oldschoolsolutions.biz> <47810646-3476-4f5b-b140-77b1934fd5b4@oldschoolsolutions.biz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <47810646-3476-4f5b-b140-77b1934fd5b4@oldschoolsolutions.biz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: cVq-PstWLleBaPUBaxxsnh1YCwfLY1Jf X-Proofpoint-ORIG-GUID: cVq-PstWLleBaPUBaxxsnh1YCwfLY1Jf X-Authority-Analysis: v=2.4 cv=Wqgb99fv c=1 sm=1 tr=0 ts=6a6b8135 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=XVzYpnm4nMk_FjgVKJMA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMwMDEyNiBTYWx0ZWRfXwzBf2j380HE9 Gd0J6z1nHmS1eJL0HVYSTo9zWFdmKH57Sqv/CcL0EvQXwe0cGZDV2MXnrKM/cr+OYzeVGVoAE+y bf9koOSk/O/5rwGNiIp7s+Poa+S0cJabTHV8Pt/hK0KbTCjkcDy4euX3JbrWR2/OofRBDMnr6Nm OlryPRcJO5R+h7ndA1KEdELubOLSXJXxmnRHhinDnP+wVdfXFrsy4Cng4GPnYGO881Ct1sQA7Ab pz4LQXbePdPe/0WpOqRiYiV9RtePIWuY4fmdngp7/MkdsjPGHgFK9nx98zNBHZaGqPXZv8Ov4Rn d5+LOiGzfrPiSKOrnljkW1fnJqnkRn74j3v383hjMLmnmKtK4PjZKR+2RgwT+Z6Zyy20vYcTlBg XRDA2DjlktYm9F9M3VEE4wF733dj3hqp6r+GAE6z2lF3KQJ0T3G6U6xqWFJZbQavyMjp5wwkWHO YEYPk3KELAGMJjMW7aA== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMwMDEyNiBTYWx0ZWRfX7NSP0Z0IbE95 UPl+ePrUAzz3XUlBOIPbnTphk8r+LJ+Fn0dyb7f57NPjGeSB0A0NbSmqTKhWrdwMfnH2uw+wbE9 LI0Ni6/GXnoOTRbMZXX7GhI6WaLXlgE= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-30_05,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 impostorscore=0 adultscore=0 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607300126 On 7/22/26 7:18 PM, Jens Glathe wrote: > Hi Sebastian, > > On 7/22/26 18:03, Sebastian Reichel wrote: >> Hi, >> >> On Wed, Jul 22, 2026 at 10:38:34AM +0200, Jens Glathe wrote: >>> I understand, however I wouldn't want to nerf ps883x for the Hamoa >>> platform until the USB4 stack is complete. The issues you >>> currently run into is: >> That's exactly what this series is doing and not really a problem >> considering USB4 is not working anyways. > > ...yet :) Alright, nerf patch it is. Question is how broad we need to specify. You have ps883x on all x1 (Hamoa and Purwa, like, Zenbook A14, IdeaCentre Mini X, HP Omnibook X14 fe1). So probably those compatibles: qcom,x1e80100, qcom,x1p42100, qcom,hamoa, qcom,purwa. Looks like a nerfing table :) > > I will do this in v2. On one hand, I would just say "don't be surprised connecting USB4 hardware to hardware that doesn't [yet] support USB4 doesn't work".. But if I were in your shoes, I'd prefer for my dock to work too.. And perhaps this is a common problem. Do you have an x86 machine with TBT/USB4 where you could build a kernel with CONFIG_THUNDERBOLT=n? Does the platform firmware there handle this more gracefully, or do we need to make this a generic consideration? Konrad