[U-Boot] [PATCH 8/9] sunxi: Enable EMAC on the Cubietruck Plus

[Chen-Yu Tsai]

The Cubietruck Plus has an RTL8211E PHY connected to the EMAC using
RGMII. The PHY is powered by DLDO4 @ 3.3V, while the I/O pins are
powered by DLDO3 @ 2.5V.

This patch adds a U-boot specific dtsi file for the board adding
an enabled EMAC node, and enables the EMAC driver in the defconfig.
The binding used here is the old revision currently supported in
U-boot. There is no stable binding nor support in upstream Linux
at this time.

Signed-off-by: Chen-Yu Tsai <wens at csie.org>
---
 .../arm/dts/sun8i-a83t-cubietruck-plus-u-boot.dtsi | 39 ++++++++++++++++++++++
 configs/Cubietruck_plus_defconfig                  |  1 +
 2 files changed, 40 insertions(+)
 create mode 100644 arch/arm/dts/sun8i-a83t-cubietruck-plus-u-boot.dtsi

diff --git a/arch/arm/dts/sun8i-a83t-cubietruck-plus-u-boot.dtsi b/arch/arm/dts/sun8i-a83t-cubietruck-plus-u-boot.dtsi
new file mode 100644
index 000000000000..b4e216c14264
--- /dev/null
+++ b/arch/arm/dts/sun8i-a83t-cubietruck-plus-u-boot.dtsi
@@ -0,0 +1,39 @@
+#include "sunxi-u-boot.dtsi"
+
+/ {
+	aliases {
+		ethernet0 = &emac;
+	};
+
+	soc {
+		emac: ethernet at 01c30000 {
+			compatible = "allwinner,sun8i-a83t-emac";
+			reg = <0x01c30000 0x2000>, <0x01c00030 0x4>;
+			reg-names = "emac", "syscon";
+			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&rgmii_pins>;
+			phy-mode = "rgmii";
+			phy = <&phy1>;
+			status = "okay";
+
+			phy1: ethernet-phy at 1 {
+				reg = <1>;
+			};
+		};
+	};
+};
+
+&pio {
+	rgmii_pins: rgmii_pins {
+		allwinner,pins = "PD8", "PD9", "PD10", "PD11",
+				 "PD12", "PD13", "PD15",
+				 "PD16", "PD17", "PD18", "PD19",
+				 "PD20", "PD21", "PD22", "PD23";
+		allwinner,function = "emac";
+		allwinner,drive = <3>;
+		allwinner,pull = <0>;
+	};
+};
diff --git a/configs/Cubietruck_plus_defconfig b/configs/Cubietruck_plus_defconfig
index 3aefcc58413c..ee8b901d0d08 100644
--- a/configs/Cubietruck_plus_defconfig
+++ b/configs/Cubietruck_plus_defconfig
@@ -22,6 +22,7 @@ CONFIG_SPL=y
 # CONFIG_SPL_DOS_PARTITION is not set
 # CONFIG_SPL_ISO_PARTITION is not set
 # CONFIG_SPL_EFI_PARTITION is not set
+CONFIG_SUN8I_EMAC=y
 CONFIG_AXP_DLDO3_VOLT=2500
 CONFIG_AXP_DLDO4_VOLT=3300
 CONFIG_AXP_FLDO1_VOLT=1200
-- 
2.14.1