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The IMU chip on the librem5-devkit is not mounted at the "natural" place that would match normal phone orientation (see the documentation for the details about what that is). Since the lsm9ds1 driver supports providing a mount matrix, we can describe the orientation on the board in the dts: Create a right-handed coordinate system (x * -1; see the datasheet for the axis) and rotate 180 degrees around the y axis because the device sits on the back side from the display. Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm> Reviewed-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@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.