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arm64: dts: librem5-devkit: add lsm9ds1 mount matrix

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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>
This commit is contained in:
Martin Kepplinger 2020-02-27 14:17:33 +01:00 committed by Shawn Guo
parent 5369d19145
commit eef22bb129
1 changed files with 3 additions and 0 deletions
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3
arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
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@ -539,6 +539,9 @@ accel-gyro@6a {
reg = <0x6a>;
vdd-supply = <&reg_3v3_p>;
vddio-supply = <&reg_3v3_p>;
mount-matrix = "1", "0", "0",
"0", "1", "0",
"0", "0", "-1";
};
};