Messages in this thread Patch in this message | | | Date | Mon, 3 Feb 2020 12:05:45 +0100 | From | Marco Felsch <> | Subject | Re: [PATCH] arm64: dts: librem5-devkit: add lsm9ds1 mount matrix |
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Hi Martin,
On 20-01-20 11:07, Martin Kepplinger wrote: > 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:
I didn't found the patch which adds the iio_read_mount_matrix() support. Appart of that your patch looks good so feel free to add my:
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Regards, Marco
> 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> > --- > > tested on the librem5-devkit of course, finally fixing the orientation problem > for the accelerometer :) > > thanks, > > martin > > > arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > index 703254282b96..6c8ab009081b 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts > @@ -457,6 +457,9 @@ > reg = <0x6a>; > vdd-supply = <®_3v3_p>; > vddio-supply = <®_3v3_p>; > + mount-matrix = "1", "0", "0", > + "0", "1", "0", > + "0", "0", "-1"; > }; > }; > > -- > 2.20.1
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