[PATCH v7 1/2] dt-bindings: serial: add reg-io-width compatible

[Hyunki Koo]

From: Hyunki Koo <hyunki00.koo@xxxxxxxxxxx>

Add reg-io-width compatible

Signed-off-by: Hyunki Koo <hyunki00.koo@xxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
---
v5: first added in this series
v6: clean description of reg-io-width
v7: correct build error on running 'make dt_binding_check' 
---
 .../devicetree/bindings/serial/samsung_uart.yaml          | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.yaml b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
index 9d2ce347875b..a57b1233c691 100644
--- a/Documentation/devicetree/bindings/serial/samsung_uart.yaml
+++ b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
@@ -29,6 +29,14 @@ properties:
   reg:
     maxItems: 1
 
+  reg-io-width:
+    description: |
+      The size (in bytes) of the IO accesses that should be performed
+      on the device.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [ 1, 4 ]
+
   clocks:
     minItems: 2
     maxItems: 5
-- 
2.17.1