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@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; };