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e5c6e693be
The design of the Bananapi M2 Ultra has both DLDO1 and DLDO2 regulators
provide power to the WiFi+BT module, which is based on the Broadcom
BCM43438 or BCM43430 chip. Each regulator output from the PMIC can supply
up to 200 mA. The datasheet of the chip suggests a maximum power draw of
up to 360 mA when transmitting, thus requiring two outputs from the PMIC
to handle the load. However the device tree only references one of them,
leaving the other unused and possibly turned off.
This patch marks both as always-on, since we don't have a proper binding
to specify two regulators as "bound together". The name and constraints
of DLDO2 are also added.
Fixes: da7ac948fa ("ARM: dts: sun8i: Add board dts file for Banana Pi M2
Ultra")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
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.