ARM: shmobile: silk: add Ether DT support

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

Based on the original patch by Vladimir Barinov
<vladimir.barinov@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts
index f3da95b1deddfa2a02a27bf91a68378557857d8c..79bc64b9445646dcd88734bb71dc6f9279c71c88 100644 (file)
--- a/arch/arm/boot/dts/r8a7794-silk.dts
+++ b/arch/arm/boot/dts/r8a7794-silk.dts
@@ -22,7 +22,7 @@
        };
 
        chosen {
-               bootargs = "ignore_loglevel";
+               bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
                stdout-path = &scif2;
        };
 
@@ -41,6 +41,16 @@
                renesas,groups = "scif2_data";
                renesas,function = "scif2";
        };
+
+       ether_pins: ether {
+               renesas,groups = "eth_link", "eth_mdio", "eth_rmii";
+               renesas,function = "eth";
+       };
+
+       phy1_pins: phy1 {
+               renesas,groups = "intc_irq8";
+               renesas,function = "intc";
+       };
 };
 
 &scif2 {
@@ -49,3 +59,19 @@
 
        status = "okay";
 };
+
+&ether {
+       pinctrl-0 = <&ether_pins &phy1_pins>;
+       pinctrl-names = "default";
+
+       phy-handle = <&phy1>;
+       renesas,ether-link-active-low;
+       status = "okay";
+
+       phy1: ethernet-phy@1 {
+               reg = <1>;
+               interrupt-parent = <&irqc0>;
+               interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
+               micrel,led-mode = <1>;
+       };
+};