net: Add EMAC driver for H3/A83T/A64 SoCs.

This patch add EMAC driver support for H3/A83T/A64 SoCs.
Tested on Pine64(A64-External PHY) and Orangepipc(H3-Internal PHY).

BIG Thanks to Andre for providing some of the DT code.

Signed-off-by: Amit Singh Tomar <amittomer25@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

7 files changed, 101 insertions, 2 deletions

diff --git a/arch/arm/dts/sun50i-a64-pine64-plus.dts b/arch/arm/dts/sun50i-a64-pine64-plus.dts
index 549dc15..389c609 100644
--- a/arch/arm/dts/sun50i-a64-pine64-plus.dts
+++ b/arch/arm/dts/sun50i-a64-pine64-plus.dts
@@ -57,3 +57,16 @@
 		reg = <0x40000000 0x40000000>;
 	};
 };
+
+&emac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
+	phy-mode = "rgmii";
+	phy = <&phy1>;
+	status = "okay";
+
+	phy1: ethernet-phy@1 {
+	reg = <1>;
+	};
+};
+
diff --git a/arch/arm/dts/sun50i-a64.dtsi b/arch/arm/dts/sun50i-a64.dtsi
index 1bd436f..7d0dc76 100644
--- a/arch/arm/dts/sun50i-a64.dtsi
+++ b/arch/arm/dts/sun50i-a64.dtsi
@@ -506,6 +506,25 @@
 				allwinner,drive = <SUN4I_PINCTRL_10_MA>;
 				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
 			};
+
+			rmii_pins: rmii_pins {
+				allwinner,pins = "PD10", "PD11", "PD13", "PD14",
+						 "PD17", "PD18", "PD19", "PD20",
+						 "PD22", "PD23";
+				allwinner,function = "emac";
+				allwinner,drive = <SUN4I_PINCTRL_40_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
+
+			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 = <SUN4I_PINCTRL_40_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
 		};
 
 		ahb_rst: reset@1c202c0 {
@@ -620,5 +639,19 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		emac: ethernet@01c30000 {
+			compatible = "allwinner,sun50i-a64-emac";
+			reg = <0x01c30000 0x2000>, <0x01c00030 0x4>;
+			reg-names = "emac", "syscon";
+			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&ahb_rst 17>;
+			reset-names = "ahb";
+			clocks = <&bus_gates 17>;
+			clock-names = "ahb";
+			status = "disabled";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 	};
 };
diff --git a/arch/arm/dts/sun8i-h3-orangepi-2.dts b/arch/arm/dts/sun8i-h3-orangepi-2.dts
index f93f5d1..d3f8f55 100644
--- a/arch/arm/dts/sun8i-h3-orangepi-2.dts
+++ b/arch/arm/dts/sun8i-h3-orangepi-2.dts
@@ -184,3 +184,16 @@
 	usb1_vbus-supply = <&reg_usb1_vbus>;
 	status = "okay";
 };
+
+&emac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
+	phy-mode = "rgmii";
+	phy = <&phy1>;
+	status = "okay";
+
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
diff --git a/arch/arm/dts/sun8i-h3-orangepi-pc.dts b/arch/arm/dts/sun8i-h3-orangepi-pc.dts
index 30ccca0..0a74a91 100644
--- a/arch/arm/dts/sun8i-h3-orangepi-pc.dts
+++ b/arch/arm/dts/sun8i-h3-orangepi-pc.dts
@@ -173,3 +173,15 @@
 	/* USB VBUS is always on */
 	status = "okay";
 };
+
+&emac {
+	phy = <&phy1>;
+	phy-mode = "mii";
+	allwinner,use-internal-phy;
+	allwinner,leds-active-low;
+	status = "okay";
+
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
diff --git a/arch/arm/dts/sun8i-h3.dtsi b/arch/arm/dts/sun8i-h3.dtsi
index c2f63c5..6ca5e34 100644
--- a/arch/arm/dts/sun8i-h3.dtsi
+++ b/arch/arm/dts/sun8i-h3.dtsi
@@ -501,6 +501,17 @@
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
+			rgmii_pins: rgmii_pins {
+				allwinner,pins = "PD0", "PD1", "PD2", "PD3",
+						 "PD4", "PD5", "PD7",
+						 "PD8", "PD9", "PD10",
+						 "PD12", "PD13", "PD15",
+						 "PD16", "PD17";
+				allwinner,function = "emac";
+				allwinner,drive = <SUN4I_PINCTRL_40_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
+
 			uart0_pins_a: uart0@0 {
 				allwinner,pins = "PA4", "PA5";
 				allwinner,function = "uart0";
@@ -616,6 +627,20 @@
 			status = "disabled";
 		};
 
+		emac: ethernet@01c30000 {
+			compatible = "allwinner,sun8i-h3-emac";
+			reg = <0x01c30000 0x2000>, <0x01c00030 0x4>;
+			reg-names = "emac", "syscon";
+			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&ahb_rst 17>, <&ahb_rst 66>;
+			reset-names = "ahb", "ephy";
+			clocks = <&bus_gates 17>, <&bus_gates 128>;
+			clock-names = "ahb", "ephy";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		gic: interrupt-controller@01c81000 {
 			compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic";
 			reg = <0x01c81000 0x1000>,
diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
index c2e72f5..d4dff1e 100644
--- a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
@@ -40,7 +40,8 @@ struct sunxi_ccm_reg {
 	u32 ahb_gate1;		/* 0x64 ahb module clock gating 1 */
 	u32 apb1_gate;		/* 0x68 apb1 module clock gating */
 	u32 apb2_gate;		/* 0x6c apb2 module clock gating */
-	u32 reserved9[4];
+	u32 bus_gate4;          /* 0x70 gate 4 module clock gating */
+	u8 res3[0xc];
 	u32 nand0_clk_cfg;	/* 0x80 nand0 clock control */
 	u32 nand1_clk_cfg;	/* 0x84 nand1 clock control */
 	u32 sd0_clk_cfg;	/* 0x88 sd0 clock control */
@@ -387,6 +388,7 @@ struct sunxi_ccm_reg {
 #define AHB_RESET_OFFSET_LCD0		4
 
 /* ahb_reset2 offsets */
+#define AHB_RESET_OFFSET_EPHY		2
 #define AHB_RESET_OFFSET_LVDS		0
 
 /* apb2 reset */
diff --git a/arch/arm/include/asm/arch-sunxi/cpu_sun4i.h b/arch/arm/include/asm/arch-sunxi/cpu_sun4i.h
index c5e9d88..cd009d7 100644
--- a/arch/arm/include/asm/arch-sunxi/cpu_sun4i.h
+++ b/arch/arm/include/asm/arch-sunxi/cpu_sun4i.h
@@ -87,7 +87,8 @@
 #define SUNXI_KEYPAD_BASE		0x01c23000
 #define SUNXI_TZPC_BASE			0x01c23400
 
-#if defined(CONFIG_MACH_SUN8I_A83T) || defined(CONFIG_MACH_SUN8I_H3)
+#if defined(CONFIG_MACH_SUN8I_A83T) || defined(CONFIG_MACH_SUN8I_H3) || \
+defined(CONFIG_MACH_SUN50I)
 /* SID address space starts at 0x01c1400, but e-fuse is at offset 0x200 */
 #define SUNXI_SID_BASE			0x01c14200
 #else