diff mbox series

arm64: dts: allwinner: sun50i-a64-pinephone: Fix mpu6050 mount matrix

Message ID 20260725111909.2244868-1-megi@xff.cz (mailing list archive)
State New
Headers
Series arm64: dts: allwinner: sun50i-a64-pinephone: Fix mpu6050 mount matrix |

Commit Message

Ondřej Jirman July 25, 2026, 11:19 a.m. UTC 
From: Ondrej Jirman <megi@xff.cz>

The current mount matrix for mpu6050 is wrong. The mount matrix is a
simple transform from the sensor coordinate space to the device
coordinate space described in DT, where, looking at the screen, X
points to the right, Y to the top, and Z towards the user.

The mpu6050 is mounted like this (looking at the screen from the
front; the sensor is on the near side of the PCB, so its Z axis
points towards the user; o marks the pin 1 corner):

           +Xs
            ^
            |
         +------+
  +Ys <--|      |
         | o    |
         +------+

so this gives:

  Xd = -Ys  [0, -1, 0]
  Yd =  Xs  [1, 0, 0]
  Zd =  Zs  [0, 0, 1]

Fixes: 2496b2aaacf1 ("arm64: dts: allwinner: pinephone: Add mount matrix to accelerometer")
Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
index 4bc6c1ef2cde..f958bdbb0d33 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
@@ -230,8 +230,8 @@  accelerometer@68 {
 		interrupts = <7 5 IRQ_TYPE_EDGE_RISING>; /* PH5 */
 		vdd-supply = <&reg_dldo1>;
 		vddio-supply = <&reg_dldo1>;
-		mount-matrix = "0", "1", "0",
-			       "-1", "0", "0",
+		mount-matrix = "0", "-1", "0",
+			       "1", "0", "0",
 			       "0", "0", "1";
 	};
 };