ARM: socfpga: dts: add sdram controller dt binding doc
Add binding doc for Altera SOCFPGA SDRAM controller.
Signed-off-by: Alan Tull <atull@opensource.altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
diff --git a/Documentation/devicetree/bindings/arm/altera/socfpga-sdram-controller.txt b/Documentation/devicetree/bindings/arm/altera/socfpga-sdram-controller.txt
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index 0000000..77ca635
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+++ b/Documentation/devicetree/bindings/arm/altera/socfpga-sdram-controller.txt
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+Altera SOCFPGA SDRAM Controller
+
+Required properties:
+- compatible : Should contain "altr,sdr-ctl" and "syscon".
+ syscon is required by the Altera SOCFPGA SDRAM EDAC.
+- reg : Should contain 1 register range (address and length)
+
+Example:
+ sdr: sdr@ffc25000 {
+ compatible = "altr,sdr-ctl", "syscon";
+ reg = <0xffc25000 0x1000>;
+ };