[U-Boot] [PATCH 2/2] arm: socfpga: socrates: Add eth0 alias to enable ethernet

[Stefan Roese <sr@denx.de>]

This enables full ethernet usage, including U-Boot to write the board
specific MAC address (ethaddr) into the DT blob before passing it to
Linux.

Without this, the ethaddr is not detected in U-Boot at all, resulting
in this error upon bootup:

...
Model: EBV SOCrates
Net:
Error: ethernet at ff702000 address not set.
No ethernet found.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Chin Liang See <clsee@altera.com>
---
 arch/arm/dts/socfpga_cyclone5_socrates.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/dts/socfpga_cyclone5_socrates.dts b/arch/arm/dts/socfpga_cyclone5_socrates.dts
index 591d96c..d2ab3b3 100644
--- a/arch/arm/dts/socfpga_cyclone5_socrates.dts
+++ b/arch/arm/dts/socfpga_cyclone5_socrates.dts
@@ -15,6 +15,11 @@
 	};
 
 	aliases {
+		/*
+		 * This allows the ethaddr uboot environment variable
+		 * contents to be added to the gmac1 device tree blob.
+		 */
+		ethernet0 = &gmac1;
 		udc0 = &usb1;
 	};
 
-- 
2.8.1