diff mbox series

[v2,9/9] arm64: dts: librem5-devkit: add lsm9ds1 mount matrix

Message ID 20200218084942.4884-10-martin.kepplinger@puri.sm (mailing list archive)
State New, archived
Headers show
Series arm64: dts: librem5-devkit: description updates | expand

Commit Message

Martin Kepplinger Feb. 18, 2020, 8:49 a.m. UTC 
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>
---
 arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
index 4cb11ed17c24..19ca3b4f802f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts
@@ -537,6 +537,9 @@ 
 		reg = <0x6a>;
 		vdd-supply = <&reg_3v3_p>;
 		vddio-supply = <&reg_3v3_p>;
+		mount-matrix =  "1",  "0",  "0",
+				"0",  "1",  "0",
+				"0",  "0", "-1";
 	};
 };