From: Sergei Shtylyov <[email protected]> R8A7792 SoC doesn't have the EtherMAC core, so SMSC LAN89218 Ethernet chip was used instead on the Wheat debug board; this chip is compatible with SMSC LAN9115 for which there's a (device tree aware) driver. Describe the chip in the Wheat device tree unconditionally (the driver should fail the probe if the debug board isn't connected); enable DHCP and NFS root in the command line for the kernel boot...
Based on the original (and large) patch by Vladimir Barinov <[email protected]>. Signed-off-by: Sergei Shtylyov <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Simon Horman <[email protected]> --- arch/arm/boot/dts/r8a7792-wheat.dts | 38 ++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/r8a7792-wheat.dts b/arch/arm/boot/dts/r8a7792-wheat.dts index 22ae14ffc917..e214d707f81d 100644 --- a/arch/arm/boot/dts/r8a7792-wheat.dts +++ b/arch/arm/boot/dts/r8a7792-wheat.dts @@ -21,7 +21,7 @@ }; chosen { - bootargs = "ignore_loglevel"; + bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp"; stdout-path = "serial0:115200n8"; }; @@ -29,6 +29,31 @@ 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; + smsc,save-mac-address; + reg-io-width = <4>; + vddvario-supply = <&d3_3v>; + vdd33a-supply = <&d3_3v>; + + pinctrl-0 = <&lan89218_pins>; + pinctrl-names = "default"; + }; }; &extal_clk { @@ -40,6 +65,17 @@ groups = "scif0_data"; function = "scif0"; }; + + lan89218_pins: lan89218 { + intc { + groups = "intc_irq0"; + function = "intc"; + }; + lbsc { + groups = "lbsc_ex_cs0"; + function = "lbsc"; + }; + }; }; &scif0 { -- 2.7.0.rc3.207.g0ac5344
