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-rw-r--r--Documentation/devicetree/bindings/tty/serial/efm32-uart.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
index 6588b6950a7..8e080b893b4 100644
--- a/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
+++ b/Documentation/devicetree/bindings/tty/serial/efm32-uart.txt
@@ -5,10 +5,16 @@ Required properties:
- reg : Address and length of the register set
- interrupts : Should contain uart interrupt
+Optional properties:
+- location : Decides the location of the USART I/O pins.
+ Allowed range : [0 .. 5]
+ Default: 0
+
Example:
uart@0x4000c400 {
compatible = "efm32,uart";
reg = <0x4000c400 0x400>;
interrupts = <15>;
+ location = <0>;
};