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Kendall Willis 3a274f142a firmware: ti_sci: Enable abort handling of entry to LPM 
[ Upstream commit 0fdd3240fe ]

The PM co-processor (device manager or DM) adds the ability to abort
entry to a low power mode by clearing the mode selection in the
latest version of its firmware (11.01.09) [1].

Enable the ti_sci driver to support the LPM abort call which clears the
low power mode selection of the DM. This fixes an issue where failed
system suspend attempts would cause subsequent suspends to fail.

After system suspend completes, regardless of if system suspend succeeds
or fails, the ->complete() hook in TI SCI will be called. In the
->complete() hook, a message will be sent to the DM to clear the current
low power mode selection. Clearing the low power mode selection
unconditionally will not cause any error in the DM.

[1] https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html

Signed-off-by: Kendall Willis <k-willis@ti.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/20250819195453.1094520-1-k-willis@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-11-13 15:36:46 -05:00
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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.