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On certain platforms (e.g., QCS615), consumers of LDO12A—such as PCIe, UFS, and eMMC—may draw more than 10mA of current during boot. This can exceed the regulator's limit in Low Power Mode (LPM), triggering current limit protection and causing the system to hang. To address this, there are two possible approaches: a) Set the regulator's initial mode to High Performance Mode (HPM) in the device tree. b) Keep the default LPM setting and have each consumer driver explicitly set its current load. Since some regulators are shared among multiple consumers, and setting the current must be coordinated across all of them, we will initially adopt option a by setting the regulator to HPM. We can later migrate to option b when the timing is appropriate and all consumer drivers are ready. Signed-off-by: Ziyue Zhang <ziyue.zhang@oss.qualcomm.com> Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com> Link: https://lore.kernel.org/r/20250717072746.987298-1-quic_ziyuzhan@quicinc.com 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.