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d29f54df8b
The AXP209 supports ramping up voltages on several regulators such as DCDC2 and LDO3. This patch adds preliminary support for the regulator-ramp-delay property for these 2 regulators. Note that the voltage ramp only works when regulator is already enabled. E.g. when going from say 0.7 V to 3.6 V. When turning on the regulator, no voltage ramp is performed in hardware. What this means, is that if the bootloader brings up the voltage at 0.7 V, the ramp delay property is properly applied. If however, the bootloader leaves the power off, no ramp delay is applied when the power is enabled by the regulator framework. Signed-off-by: Olliver Schinagl <oliver@schinagl.nl> Signed-off-by: Priit Laes <plaes@plaes.org> Signed-off-by: Mark Brown <broonie@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 Restructured Text 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.