[PATCH] ARM: shmobile: porter: add Ether DT support

[Sergei Shtylyov]

Define  the Porter board dependent part of  the Ether device node.
Enable DHCP and NFS root for the kernel booting.

This  patch  is analogous to the commit 26b0d2cf73cb (ARM: shmobile: henninger:
add Ether DT support)  as there  are no differences between those boards in this
respect.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov at cogentembedded.com>

---
This patch is against the 'renesas-devel-20151005-v4.3-rc4' tag of Simon
Horman's 'renesas.git' repo.

 arch/arm/boot/dts/r8a7791-porter.dts |   28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

Index: renesas/arch/arm/boot/dts/r8a7791-porter.dts
===================================================================
--- renesas.orig/arch/arm/boot/dts/r8a7791-porter.dts
+++ renesas/arch/arm/boot/dts/r8a7791-porter.dts
@@ -20,7 +20,7 @@
 	};
 
 	chosen {
-		bootargs = "ignore_loglevel";
+		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
 		stdout-path = &scif0;
 	};
 
@@ -44,6 +44,16 @@
 		renesas,groups = "scif0_data_d";
 		renesas,function = "scif0";
 	};
+
+	ether_pins: ether {
+		renesas,groups = "eth_link", "eth_mdio", "eth_rmii";
+		renesas,function = "eth";
+	};
+
+	phy1_pins: phy1 {
+		renesas,groups = "intc_irq0";
+		renesas,function = "intc";
+	};
 };
 
 &scif0 {
@@ -52,3 +62,19 @@
 
 	status = "okay";
 };
+
+&ether {
+	pinctrl-0 = <&ether_pins &phy1_pins>;
+	pinctrl-names = "default";
+
+	phy-handle = <&phy1>;
+	renesas,ether-link-active-low;
+	status = "ok";
+
+	phy1: ethernet-phy at 1 {
+		reg = <1>;
+		interrupt-parent = <&irqc0>;
+		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+		micrel,led-mode = <1>;
+	};
+};