mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-06-02 04:02:30 -04:00
6dfa62182c
At the moment, we indirectly rely on the boot firmware to set up the pinctrl for the eDP HPD line coming from the internal display. If the boot firmware does not configure the display (e.g. because a different display is selected for output in the UEFI settings), then the display fails to come up and there are several errors in the kernel log: [drm:dpu_encoder_phys_vid_wait_for_commit_done:544] [dpu error]vblank timeout: 80020041 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done returned -110 [drm:dpu_encoder_frame_done_timeout:2715] [dpu error]enc40 frame done timeout ... Add a new &edp0_hpd_default pinctrl template that can be used by boards to set up the eDP HPD pin correctly. All boards upstream so far need the same configuration; if a board needs a different configuration it can just avoid using this template and define a custom one in the board DT. Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250822-x1e80100-add-edp-hpd-v2-1-6310176239a6@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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.