serial: sh-sci: Document that serial aliases became optional

Serial aliases are optional since commit 7678f4c20fa7670f ("serial:
sh-sci: Add support for dynamic instances").
Update the DT bindings to reflect this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
index 5c002bce8f4276e365939ab5faa14d89e7058939..a7cda655010037467d18ba40f6a094d9647854a2 100644 (file)
--- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
+++ b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
@@ -90,7 +90,7 @@ Required properties:
       - "scif_clk" for the optional external clock source for the frequency
        divider (SCIF_CLK).
 
-Note: Each enabled SCIx UART should have an alias correctly numbered in the
+Note: Each enabled SCIx UART may have an optional "serialN" alias in the
 "aliases" node.
 
 Optional properties: