dt-bindings: iio: accel: adxl345: add interrupt-names

Add interrupt-names INT1 and INT2 for the two interrupt lines of the
sensor.

When one of the two interrupt lines is connected, the interrupt as its
interrupt-name, need to be declared in the devicetree. The driver then
configures the sensor to indicate its events on either INT1 or INT2.

If no interrupt is configured, then no interrupt-name should be
configured, and vice versa. In this case the sensor runs in FIFO BYPASS
mode. This allows sensor measurements, but none of the sensor events.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20241225181338.69672-4-l.rubusch@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml

@@ -37,6 +37,14 @@ properties:
   interrupts:
     maxItems: 1
 
+  interrupt-names:
+    items:
+      - enum: [INT1, INT2]
+
+dependencies:
+  interrupts: [ interrupt-names ]
+  interrupt-names: [ interrupts ]
+
 required:
   - compatible
   - reg
@@ -60,6 +68,7 @@ examples:
             reg = <0x2a>;
             interrupt-parent = <&gpio0>;
             interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "INT1";
         };
     };
   - |
@@ -78,5 +87,6 @@ examples:
             spi-cpha;
             interrupt-parent = <&gpio0>;
             interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "INT2";
         };
     };