linux-kernel - [PATCH v3 0/3] arm64: dts: qcom: x1e80100: fix USB OTG regressions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241210111444.26240-1-johan+linaro@kernel.org>
Date: Tue, 10 Dec 2024 12:14:41 +0100
From: Johan Hovold <johan+linaro@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Jonathan Marek <jonathan@...ek.ca>,
	Stephan Gerhold <stephan.gerhold@...aro.org>,
	Abel Vesa <abel.vesa@...aro.org>,
	linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	regressions@...ts.linux.dev,
	Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH v3 0/3] arm64: dts: qcom: x1e80100: fix USB OTG regressions

A recent change enabling OTG mode on the Lenovo ThinkPad T14s USB-C
ports can break SuperSpeed device hotplugging.

Abel noticed that the corresponding commit for the CRD also triggers a
hard reset during resume from suspend.

Dmitry had already reported that enabling role switching can break UCSI.

With retimer (and orientation detection) support not even merged yet,
let's revert at least until we have stable host mode in mainline.

Note that Stephan has also identified other problems with the offending
commits here:

	https://lore.kernel.org/all/ZxZO6Prrm2ITUZMQ@linaro.org/

Johan


Changes in v3
 - revert also the dtsi change that enable role-switching since it
   breaks UCSI (and DisplayPort alt mode) when the controllers are in
   host mode

Changes in v2
 - revert also the corresponding patch for the CRD which breaks suspend



Johan Hovold (3):
  Revert "arm64: dts: qcom: x1e78100-t14s: enable otg on usb-c ports"
  Revert "arm64: dts: qcom: x1e80100-crd: enable otg on usb ports"
  Revert "arm64: dts: qcom: x1e80100: enable OTG on USB-C controllers"

 .../boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts  |  8 ++++++++
 arch/arm64/boot/dts/qcom/x1e80100-crd.dts            | 12 ++++++++++++
 arch/arm64/boot/dts/qcom/x1e80100.dtsi               |  6 ------
 3 files changed, 20 insertions(+), 6 deletions(-)

-- 
2.45.2