dt-bindings: iio: accel: bma255: Fix interrupt type

Bosch accelerometers similar to BMA255 are initially configured to
emit an active-high interrupt signal. This is currently not re-configured
in the bmc150-accel driver so the interrupt should most certainly be
IRQ_TYPE_EDGE_RISING (or potentially IRQ_TYPE_LEVEL_HIGH).
(Unless there is some kind of inverter installed on the board...)

At the moment the bmc150-accel driver forcefully requests the IRQ
using IRQF_TRIGGER_RISING, which means that the IRQ type is currently
ignored in all existing device trees.

Fixes: 6259551cf19b ("iio: accel: bmc150-accel: Add DT bindings")
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210614163150.7774-2-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml b/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml
index e830d52..b37ba90 100644 (file)
--- a/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml
+++ b/Documentation/devicetree/bindings/iio/accel/bosch,bma255.yaml
@@ -38,7 +38,7 @@ properties:
     description: |
       The first interrupt listed must be the one connected to the INT1 pin,
       the second (optional) interrupt listed must be the one connected to the
-      INT2 pin (if available).
+      INT2 pin (if available). The type should be IRQ_TYPE_EDGE_RISING.
 
   mount-matrix:
     description: an optional 3x3 mounting rotation matrix.
@@ -63,7 +63,7 @@ examples:
             reg = <0x08>;
             vddio-supply = <&vddio>;
             vdd-supply = <&vdd>;
-            interrupts = <57 IRQ_TYPE_EDGE_FALLING>;
+            interrupts = <57 IRQ_TYPE_EDGE_RISING>;
         };
     };
   - |