[PATCH 1/8] dt-bindings: iio: adc: ad7606: Make corrections on spi conditions

[Guillaume Stols]

The SPI conditions are not always required, because there is also a
parallel interface. The way used to detect that the SPI interface is
used is to check if the reg value is between 0 and 256.
There is also a correction on the spi-cpha that is not required when SPI
interface is selected, while spi-cpol is.

Signed-off-by: Guillaume Stols <gstols@xxxxxxxxxxxx>
---
 .../devicetree/bindings/iio/adc/adi,ad7606.yaml         | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
index 69408cae3db9..c0008d36320f 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
@@ -117,15 +117,26 @@ properties:
 required:
   - compatible
   - reg
-  - spi-cpha
   - avcc-supply
   - vdrive-supply
   - interrupts
   - adi,conversion-start-gpios
 
-allOf:
-  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+# This checks if reg is a chipselect so the device is on an SPI
+# bus, the if-clause will fail if reg is a tuple such as for a
+# platform device.
+if:
+  properties:
+    reg:
+      minimum: 0
+      maximum: 256
+then:
+  allOf:
+    - $ref: /schemas/spi/spi-peripheral-props.yaml#
+    - required:
+        - spi-cpol
 
+allOf:
   - if:
       properties:
         compatible:

-- 
2.34.1