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Aleksandrs Vinarskis bd2dbbb1f3 arm64: dts: qcom: x1e80100-dell-xps13-9345: Introduce retimer support
Describe x2 Parade PS8830 retimers for left and right USB Type-C ports
respectively. Adjust graphs between connectors and the PHYs accordingly,
add the voltage regulators. Dell XPS 13" 9345's DSDT describes 3rd
retimer, but its not actually present.

Regulators are _assumed_ to be correct, since:
* tlmm pins match DSDT definition.
* tlmm and pmic gpios were tested and confirmed to be powering
  off/resetting respective retimers.
* USB3.0 now works correctly in both orientation, pre and post suspend.

Derived from:
arm64: dts: qcom: x1e80100-t14s: Add external DP support

Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20241030182153.16256-2-alex.vinarskis@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
History 2024-11-11 22:02:34 -06:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.