Documentation: DT: cpsw: document missing compatible

CPSW driver has multiple compatibles for errata implementations but not
documented, add necessary documentation.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/net/cpsw.txt b/Documentation/devicetree/bindings/net/cpsw.txt
index 33fe8462edf4996eb81dace6618798be59d8c65a..a9df21aaa1548a64da26c74dfbbef13e652cf3da 100644 (file)
--- a/Documentation/devicetree/bindings/net/cpsw.txt
+++ b/Documentation/devicetree/bindings/net/cpsw.txt
@@ -2,7 +2,11 @@ TI SoC Ethernet Switch Controller Device Tree Bindings
 ------------------------------------------------------
 
 Required properties:
-- compatible           : Should be "ti,cpsw"
+- compatible           : Should be one of the below:-
+                         "ti,cpsw" for backward compatible
+                         "ti,am335x-cpsw" for AM335x controllers
+                         "ti,am4372-cpsw" for AM437x controllers
+                         "ti,dra7-cpsw" for DRA7x controllers
 - reg                  : physical base address and size of the cpsw
                          registers map
 - interrupts           : property with a value describing the interrupt