[PATCH] ARM: dts: imx: Add alias for ethernet controller

[Marek Vasut]

commit 22970070e027cbbb9b2878f8f7c31d0d7f29e94d upstream.

Add alias for FEC ethernet on i.MX25, i.MX27, i.MX51 and i.MX53 to allow
bootloaders (like U-Boot) patch-in the MAC address for FEC using this
alias.

Signed-off-by: Marek Vasut <marex at denx.de>
Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
Cc: <stable at vger.kernel.org> # 3.14.x
---
 arch/arm/boot/dts/imx25.dtsi | 1 +
 arch/arm/boot/dts/imx27.dtsi | 1 +
 arch/arm/boot/dts/imx51.dtsi | 1 +
 arch/arm/boot/dts/imx53.dtsi | 1 +
 4 files changed, 4 insertions(+)

NOTE: Without this backport, the ethernet adapter on most of the boards
      with the i.MX CPUs does not know it's MAC address (the controller
      does not have an EEPROM). Without MAC address, the ethernet cannot
      be brought up and this makes such board unusable when booting from
      NFS. This patch lets the bootloader pass the MAC address via DT to
      the kernel properly, thus letting me boot from NFS again.

diff --git a/arch/arm/boot/dts/imx25.dtsi b/arch/arm/boot/dts/imx25.dtsi
index 737ed5d..de16119 100644
--- a/arch/arm/boot/dts/imx25.dtsi
+++ b/arch/arm/boot/dts/imx25.dtsi
@@ -30,6 +30,7 @@
 		spi2 = &spi3;
 		usb0 = &usbotg;
 		usb1 = &usbhost1;
+		ethernet0 = &fec;
 	};
 
 	cpus {
diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi
index 826231e..da2eb7f 100644
--- a/arch/arm/boot/dts/imx27.dtsi
+++ b/arch/arm/boot/dts/imx27.dtsi
@@ -30,6 +30,7 @@
 		spi0 = &cspi1;
 		spi1 = &cspi2;
 		spi2 = &cspi3;
+		ethernet0 = &fec;
 	};
 
 	aitc: aitc-interrupt-controller at e0000000 {
diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index 4bcdd3a..e1b6015 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -27,6 +27,7 @@
 		spi0 = &ecspi1;
 		spi1 = &ecspi2;
 		spi2 = &cspi;
+		ethernet0 = &fec;
 	};
 
 	tzic: tz-interrupt-controller at e0000000 {
diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi
index 7abe6c4..86df3f5 100644
--- a/arch/arm/boot/dts/imx53.dtsi
+++ b/arch/arm/boot/dts/imx53.dtsi
@@ -34,6 +34,7 @@
 		spi0 = &ecspi1;
 		spi1 = &ecspi2;
 		spi2 = &cspi;
+		ethernet0 = &fec;
 	};
 
 	cpus {
-- 
2.0.1