[PATCH] dt-bindings: iio: samsung, exynos-adc: add common clock properties

[Krzysztof Kozlowski]

Add common properties appearing in DTSes (assigned-clocks and similar)
to fix dtbs_check warnings like:

  arch/arm/boot/dts/exynos3250-artik5-eval.dt.yaml:
    adc at 126c0000: assigned-clock-rates: [[6000000]] is not of type 'object'
  arch/arm/boot/dts/exynos3250-artik5-eval.dt.yaml:
    adc at 126c0000: assigned-clocks: [[7, 238]] is not of type 'object'

Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
---
 .../bindings/iio/adc/samsung,exynos-adc.yaml         | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml b/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
index c65921e66dc1..ce03132f8ebc 100644
--- a/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/samsung,exynos-adc.yaml
@@ -27,6 +27,18 @@ properties:
   reg:
     maxItems: 1
 
+  assigned-clocks:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-parents:
+    minItems: 1
+    maxItems: 3
+
+  assigned-clock-rates:
+    minItems: 1
+    maxItems: 3
+
   clocks:
     description:
       Phandle to ADC bus clock. For Exynos3250 additional clock is needed.
-- 
2.25.1