R8A7792 SoC doesn't have the EtherMAC core, so SMSC LAN89218 Ethernet
chip was used instead on the Blanche board; this chip is compatible with
SMSC LAN9115 for which there's a (device tree aware) driver. Describe
the chip in the Blanche device tree; enable DHCP and NFS root in the
kernel command line for the kernel booting.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Acked-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
Changes in version 3:
- refreshed the patch.
Changes in version 2:
- added Simon's ACK.
arch/arm/boot/dts/r8a7792-blanche.dts | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
Index: renesas/arch/arm/boot/dts/r8a7792-blanche.dts
===================================================================
--- renesas.orig/arch/arm/boot/dts/r8a7792-blanche.dts
+++ renesas/arch/arm/boot/dts/r8a7792-blanche.dts
@@ -22,7 +22,7 @@
};
chosen {
- bootargs = "ignore_loglevel";
+ bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";
stdout-path = "serial0:115200n8";
};
@@ -30,6 +30,27 @@
device_type = "memory";
reg = <0 0x40000000 0 0x40000000>;
};
+
+ d3_3v: regulator-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "D3.3V";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ethernet@18000000 {
+ compatible = "smsc,lan89218", "smsc,lan9115";
+ reg = <0 0x18000000 0 0x100>;
+ phy-mode = "mii";
+ interrupt-parent = <&irqc>;
+ interrupts = <0 IRQ_TYPE_EDGE_FALLING>;
+ smsc,irq-push-pull;
+ reg-io-width = <4>;
+ vddvario-supply = <&d3_3v>;
+ vdd33a-supply = <&d3_3v>;
+ };
};
&extal_clk {
