linux-kernel - [PATCH v2 0/2] arm64: dts: qcom: x1e80100: fix USB OTG regressions

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Message-ID: <20241209111905.31017-1-johan+linaro@kernel.org>
Date: Mon,  9 Dec 2024 12:19:03 +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 v2 0/2] 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.

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 and Dmitry have already identified other problems with
the offending commits here:

	https://lore.kernel.org/all/ZxZO6Prrm2ITUZMQ@linaro.org/
	https://lore.kernel.org/all/hw2pdof4ajadjsjrb44f2q4cz4yh5qcqz5d3l7gjt2koycqs3k@xx5xvd26uyef

Johan


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


Johan Hovold (2):
  Revert "arm64: dts: qcom: x1e78100-t14s: enable otg on usb-c ports"
  Revert "arm64: dts: qcom: x1e80100-crd: enable otg on usb ports"

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

-- 
2.45.2