[PATCH v6 1/2] dt-bindings: serial: Add reg-io-width compatible

[Hyunki Koo]

Add a description for reg-io-width options for the samsung serial
UART peripheral.

Signed-off-by: Hyunki Koo <hyunki00.koo@xxxxxxxxxxx>
---
v5: first added in this series
v6: clean description of reg-io-width
---
 Documentation/devicetree/bindings/serial/samsung_uart.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.yaml b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
index 9d2ce347875b..1a0bb7619e2e 100644
--- a/Documentation/devicetree/bindings/serial/samsung_uart.yaml
+++ b/Documentation/devicetree/bindings/serial/samsung_uart.yaml
@@ -29,6 +29,12 @@ properties:
   reg:
     maxItems: 1
 
+  reg-io-width:
+    description:
+      The size (in bytes) of the IO accesses that should be performed
+      on the device. If omitted, default of 1 is used.
+      - enum: [ 1, 4 ]
+
   clocks:
     minItems: 2
     maxItems: 5
-- 
2.15.0.rc1