linux-kernel - [PATCH 0/2] arm64: dts: qcom: x1e80100: Add external DP support to CRD and T14s

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Message-Id: <20240902-x1e80100-crd-dts-add-external-dp-support-v1-0-899c264c0eb7@linaro.org>
Date: Mon, 02 Sep 2024 18:01:34 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Johan Hovold <johan@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Trilok Soni <quic_tsoni@...cinc.com>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH 0/2] arm64: dts: qcom: x1e80100: Add external DP support to
 CRD and T14s

Both the CRD and T14s support altmode for external DisplayPort over the
USB Type-C connectors. The CRD has 3 such connectors while the T14s has
only 2.

Enabling DP altmode requires the support for the Parade PS8830 USB Type-C
retimer. [1]

Currently, only the DP 4lanes and USB3 modes have been successfully
tested on both CRD and T14s. The DP 2lanes + USB3 mode seems to suggest
that changes are further needed in the QMP PHY driver.

[1]
https://lore.kernel.org/all/20240829-x1e80100-ps8830-v1-0-bcc4790b1d45@linaro.org/

Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
Abel Vesa (2):
      arm64: dts: qcom: x1e80100-crd: Enable external DP support
      arm64: dts: qcom: x1e80100-t14s: Add external DP support

 .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts     | 278 +++++++++++++-
 arch/arm64/boot/dts/qcom/x1e80100-crd.dts          | 414 ++++++++++++++++++++-
 2 files changed, 682 insertions(+), 10 deletions(-)
---
base-commit: ecc768a84f0b8e631986f9ade3118fa37852fef0
change-id: 20240829-x1e80100-crd-dts-add-external-dp-support-8daf3a516823

Best regards,
-- 
Abel Vesa <abel.vesa@...aro.org>