serial_sh: Device Tree support
Add Device Tree bindings.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/doc/device-tree-bindings/serial/sh.txt b/doc/device-tree-bindings/serial/sh.txt
new file mode 100644
index 0000000..b23b135
--- /dev/null
+++ b/doc/device-tree-bindings/serial/sh.txt
@@ -0,0 +1,6 @@
+* Renesas SCI serial interface
+
+Required properties:
+- compatible: must be "renesas,scif" or "renesas,scifa"
+- reg: exactly one register range with length
+- clock: input clock frequency for the SCI unit