[PATCH v3 08/14] dt-bindings: mfd: atmel,sama5d2-flexcom: Add USART child node ref binding

[Sergiu Moga <sergiu.moga@xxxxxxxxxxxxx>]

FLEXCOM, among other functionalities, has the ability to offer the USART
serial communication protocol. To have the FLEXCOM binding properly
validate its USART children nodes, we must reference the correct binding.
To differentiate between the SPI of FLEXCOM and the SPI of USART in SPI
mode, use the compatible string.

Signed-off-by: Sergiu Moga <sergiu.moga@xxxxxxxxxxxxx>
---


v1 -> v2:
- Nothing


v2 -> v3:
- Previously [PATCH 7]
- Compare devices based on the compatible instead of the clock



 .../bindings/mfd/atmel,sama5d2-flexcom.yaml      | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
index 0db0f2728b65..0467dfcf7db5 100644
--- a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
+++ b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
@@ -72,13 +72,21 @@ properties:
 
 patternProperties:
   "^serial@[0-9a-f]+$":
-    type: object
+    $ref: /schemas/serial/atmel,at91-usart.yaml
     description:
-      Child node describing USART. See atmel-usart.txt for details
-      of USART bindings.
+      Child node describing USART.
 
   "^spi@[0-9a-f]+$":
-    $ref: /schemas/spi/atmel,at91rm9200-spi.yaml
+    allOf:
+      - if:
+          properties:
+            compatible:
+              contains:
+                const: atmel,at91sam9260-usart
+        then:
+          $ref: /schemas/serial/atmel,at91-usart.yaml
+        else:
+          $ref: /schemas/spi/atmel,at91rm9200-spi.yaml
     description:
       Child node describing SPI.
 
-- 
2.34.1