[PATCH] syscon: dt-bindings: Add documentation for Aspeed system control units

[Andrew Jeffery]

Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Joel Stanley <joel@xxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/mfd/aspeed-scu.txt | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/aspeed-scu.txt

diff --git a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
new file mode 100644
index 000000000000..4fc5b83726d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
@@ -0,0 +1,18 @@
+The Aspeed System Control Unit manages the global behaviour of the SoC,
+configuring elements such as clocks, pinmux, and reset.
+
+Required properties:
+- compatible:	One of:
+		"aspeed,ast2400-scu", "syscon", "simple-mfd"
+		"aspeed,g4-scu", "syscon", "simple-mfd"
+		"aspeed,ast2500-scu", "syscon", "simple-mfd"
+		"aspeed,g5-scu", "syscon", "simple-mfd"
+
+- reg:		contains the offset and length of the SCU memory region
+
+Example:
+
+syscon: syscon@1e6e2000 {
+	compatible = "aspeed,ast2400-scu", "syscon", "simple-mfd";
+	reg = <0x1e6e2000 0x1a8>;
+};
-- 
2.7.4