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-rw-r--r--Documentation/devicetree/bindings/tty/serial/of-serial.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
index ba385f2e0ddc..1e1145ca4f3c 100644
--- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt
+++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt
@@ -14,7 +14,10 @@ Required properties:
- "serial" if the port type is unknown.
- reg : offset and length of the register set for the device.
- interrupts : should contain uart interrupt.
-- clock-frequency : the input clock frequency for the UART.
+- clock-frequency : the input clock frequency for the UART
+ or
+ clocks phandle to refer to the clk used as per Documentation/devicetree
+ /bindings/clock/clock-bindings.txt
Optional properties:
- current-speed : the current active speed of the UART.