bmips: add experimental ethernet support

This adds experimental ethernet support for BCM6318, BCM6328, BCM6362, BCM6368
and BCM63268.
BCM6358 needs a different driver, so there's no support for now.

Working devices:
- Comtrend AR-5315u
- Comtrend AR-5387un
- Comtrend VR-3025u
- Comtrend VR-3032u

Not working devices:
- Netgear DGND3700 v2 (no idea on how the external switch is connected)
- Huawei HG556a ver B (BCM6358 needs a separate driveer)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

10 files changed, 637 insertions, 0 deletions

diff --git a/target/linux/bmips/dts/bcm63168-comtrend-vr-3032u.dts b/target/linux/bmips/dts/bcm63168-comtrend-vr-3032u.dts
index ed7f51890c..d82247d26c 100644
--- a/target/linux/bmips/dts/bcm63168-comtrend-vr-3032u.dts
+++ b/target/linux/bmips/dts/bcm63168-comtrend-vr-3032u.dts
@@ -39,6 +39,12 @@
 	status = "okay";
 };
 
+&ethernet {
+	status = "okay";
+
+	mtd-mac-address = <&cferom 0x6a0>;
+};
+
 &leds {
 	status = "okay";
 
@@ -177,6 +183,38 @@
 	status = "okay";
 };
 
+&switch0 {
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "lan2";
+
+			phy-handle = <&phy1>;
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan3";
+
+			phy-handle = <&phy2>;
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan4";
+
+			phy-handle = <&phy3>;
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan1";
+
+			phy-handle = <&phy4>;
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/target/linux/bmips/dts/bcm6318-comtrend-ar-5315u.dts b/target/linux/bmips/dts/bcm6318-comtrend-ar-5315u.dts
index 35c74fd3ac..a5ae435a3a 100644
--- a/target/linux/bmips/dts/bcm6318-comtrend-ar-5315u.dts
+++ b/target/linux/bmips/dts/bcm6318-comtrend-ar-5315u.dts
@@ -37,6 +37,12 @@
 	status = "okay";
 };
 
+&ethernet {
+	status = "okay";
+
+	mtd-mac-address = <&cfe 0x6a0>;
+};
+
 &hsspi {
 	status = "okay";
 
@@ -168,6 +174,38 @@
 	};
 };
 
+&switch0 {
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "lan4";
+
+			phy-handle = <&phy1>;
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan3";
+
+			phy-handle = <&phy2>;
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan2";
+
+			phy-handle = <&phy3>;
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan1";
+
+			phy-handle = <&phy4>;
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/target/linux/bmips/dts/bcm6318.dtsi b/target/linux/bmips/dts/bcm6318.dtsi
index f5cfd77438..e7dc38e937 100644
--- a/target/linux/bmips/dts/bcm6318.dtsi
+++ b/target/linux/bmips/dts/bcm6318.dtsi
@@ -346,5 +346,103 @@
 
 			status = "disabled";
 		};
+
+		switch0: switch@10080000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-switch";
+			reg = <0x10080000 0x8000>;
+			big-endian;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@8 {
+					reg = <8>;
+					label = "cpu";
+
+					phy-mode = "internal";
+					ethernet = <&ethernet>;
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+			};
+		};
+
+		mdio: mdio@100800b0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6368-mdio-mux";
+			reg = <0x100800b0 0x8>;
+
+			mdio_int: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				phy1: ethernet-phy@1 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <2>;
+				};
+
+				phy3: ethernet-phy@3 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <3>;
+				};
+
+				phy4: ethernet-phy@4 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <4>;
+				};
+			};
+
+			mdio_ext: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+			};
+		};
+
+		ethernet: ethernet@10088000 {
+			compatible = "brcm,bcm6318-enetsw";
+			reg = <0x10088000 0x80>,
+			      <0x10088200 0x80>,
+			      <0x10088400 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6318_IRQ_ENETSW_RX_DMA0>,
+				     <BCM6318_IRQ_ENETSW_TX_DMA0>;
+			interrupt-names = "rx",
+					  "tx";
+
+			clocks = <&periph_clk BCM6318_CLK_ROBOSW250>,
+				 <&periph_clk BCM6318_CLK_ROBOSW025>,
+				 <&ubus_clk BCM6318_UCLK_ROBOSW>;
+
+			resets = <&periph_rst BCM6318_RST_ENETSW>,
+				 <&periph_rst BCM6318_RST_EPHY>;
+
+			power-domains = <&periph_pwr BCM6318_POWER_DOMAIN_EPHY0>,
+					<&periph_pwr BCM6318_POWER_DOMAIN_EPHY1>,
+					<&periph_pwr BCM6318_POWER_DOMAIN_EPHY2>,
+					<&periph_pwr BCM6318_POWER_DOMAIN_EPHY3>;
+
+			dma-rx = <0>;
+			dma-tx = <1>;
+
+			status = "disabled";
+		};
 	};
 };
diff --git a/target/linux/bmips/dts/bcm63268.dtsi b/target/linux/bmips/dts/bcm63268.dtsi
index bf9998a552..284d2c8ef0 100644
--- a/target/linux/bmips/dts/bcm63268.dtsi
+++ b/target/linux/bmips/dts/bcm63268.dtsi
@@ -432,5 +432,105 @@
 
 			status = "disabled";
 		};
+
+		ethernet: ethernet@1000d800 {
+			compatible = "brcm,bcm63268-enetsw";
+			reg = <0x1000d800 0x80>,
+			      <0x1000da00 0x80>,
+			      <0x1000dc00 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM63268_IRQ_ENETSW_RX_DMA0>,
+				     <BCM63268_IRQ_ENETSW_TX_DMA0>;
+			interrupt-names = "rx",
+					  "tx";
+
+			clocks = <&periph_clk BCM63268_CLK_GMAC>,
+				 <&periph_clk BCM63268_CLK_ROBOSW>,
+				 <&periph_clk BCM63268_CLK_ROBOSW250>,
+				 <&timer_clk BCM63268_TCLK_EPHY1>,
+				 <&timer_clk BCM63268_TCLK_EPHY2>,
+				 <&timer_clk BCM63268_TCLK_EPHY3>,
+				 <&timer_clk BCM63268_TCLK_GPHY1>;
+
+			resets = <&periph_rst BCM63268_RST_ENETSW>,
+				 <&periph_rst BCM63268_RST_EPHY>,
+				 <&periph_rst BCM63268_RST_GPHY>;
+
+			power-domains = <&periph_pwr BCM63268_POWER_DOMAIN_ROBOSW>;
+
+			dma-rx = <0>;
+			dma-tx = <1>;
+
+			status = "disabled";
+		};
+
+		switch0: switch@10700000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-switch";
+			reg = <0x10700000 0x8000>;
+			big-endian;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@8 {
+					reg = <8>;
+					label = "cpu";
+
+					phy-mode = "internal";
+					ethernet = <&ethernet>;
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+			};
+		};
+
+		mdio: mdio@107000b0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6368-mdio-mux";
+			reg = <0x107000b0 0x8>;
+
+			mdio_int: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				phy1: ethernet-phy@1 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <2>;
+				};
+
+				phy3: ethernet-phy@3 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <3>;
+				};
+
+				phy4: ethernet-phy@4 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <4>;
+				};
+			};
+
+			mdio_ext: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+			};
+		};
 	};
 };
diff --git a/target/linux/bmips/dts/bcm6328-comtrend-ar-5387un.dts b/target/linux/bmips/dts/bcm6328-comtrend-ar-5387un.dts
index a3192dffa4..9ebd6c5c4d 100644
--- a/target/linux/bmips/dts/bcm6328-comtrend-ar-5387un.dts
+++ b/target/linux/bmips/dts/bcm6328-comtrend-ar-5387un.dts
@@ -30,6 +30,12 @@
 	status = "okay";
 };
 
+&ethernet {
+	status = "okay";
+
+	mtd-mac-address = <&cfe 0x6a0>;
+};
+
 &hsspi {
 	status = "okay";
 
@@ -113,6 +119,38 @@
 	};
 };
 
+&switch0 {
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "lan1";
+
+			phy-handle = <&phy1>;
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan2";
+
+			phy-handle = <&phy2>;
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan3";
+
+			phy-handle = <&phy3>;
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan4";
+
+			phy-handle = <&phy4>;
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/target/linux/bmips/dts/bcm6328.dtsi b/target/linux/bmips/dts/bcm6328.dtsi
index aa90cc2a9b..64fd04142c 100644
--- a/target/linux/bmips/dts/bcm6328.dtsi
+++ b/target/linux/bmips/dts/bcm6328.dtsi
@@ -368,5 +368,99 @@
 
 			status = "disabled";
 		};
+
+		ethernet: ethernet@1000d800 {
+			compatible = "brcm,bcm6328-enetsw";
+			reg = <0x1000d800 0x80>,
+			      <0x1000da00 0x80>,
+			      <0x1000dc00 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6328_IRQ_ENETSW_RX_DMA0>,
+				     <BCM6328_IRQ_ENETSW_TX_DMA0>;
+			interrupt-names = "rx",
+					  "tx";
+
+			clocks = <&periph_clk BCM6328_CLK_ROBOSW>;
+
+			resets = <&periph_rst BCM6328_RST_ENETSW>,
+				 <&periph_rst BCM6328_RST_EPHY>;
+
+			power-domains = <&periph_pwr BCM6328_POWER_DOMAIN_ROBOSW>,
+					<&periph_pwr BCM6328_POWER_DOMAIN_EPHY>;
+
+			dma-rx = <0>;
+			dma-tx = <1>;
+
+			status = "disabled";
+		};
+
+		switch0: switch@10e00000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-switch";
+			reg = <0x10e00000 0x8000>;
+			big-endian;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@8 {
+					reg = <8>;
+					label = "cpu";
+
+					phy-mode = "internal";
+					ethernet = <&ethernet>;
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+			};
+		};
+
+		mdio: mdio@10e000b0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6368-mdio-mux";
+			reg = <0x10e000b0 0x8>;
+
+			mdio_int: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				phy1: ethernet-phy@1 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <2>;
+				};
+
+				phy3: ethernet-phy@3 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <3>;
+				};
+
+				phy4: ethernet-phy@4 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <4>;
+				};
+			};
+
+			mdio_ext: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+			};
+		};
 	};
 };
diff --git a/target/linux/bmips/dts/bcm6362-netgear-dgnd3700-v2.dts b/target/linux/bmips/dts/bcm6362-netgear-dgnd3700-v2.dts
index 4da673cafa..fe26ebeed0 100644
--- a/target/linux/bmips/dts/bcm6362-netgear-dgnd3700-v2.dts
+++ b/target/linux/bmips/dts/bcm6362-netgear-dgnd3700-v2.dts
@@ -62,6 +62,12 @@
 	status = "okay";
 };
 
+&ethernet {
+	status = "okay";
+
+	mtd-mac-address = <&cferom 0x6a0>;
+};
+
 &leds {
 	status = "okay";
 
diff --git a/target/linux/bmips/dts/bcm6362.dtsi b/target/linux/bmips/dts/bcm6362.dtsi
index f46074045c..9a3d9c1f66 100644
--- a/target/linux/bmips/dts/bcm6362.dtsi
+++ b/target/linux/bmips/dts/bcm6362.dtsi
@@ -465,5 +465,99 @@
 
 			status = "disabled";
 		};
+
+		ethernet: ethernet@1000d800 {
+			compatible = "brcm,bcm6362-enetsw";
+			reg = <0x1000d800 0x80>,
+			      <0x1000da00 0x80>,
+			      <0x1000dc00 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6362_IRQ_ENETSW_RX_DMA0>;
+			interrupt-names = "rx";
+
+			clocks = <&periph_clk BCM6362_CLK_SWPKT_USB>,
+				 <&periph_clk BCM6362_CLK_SWPKT_SAR>,
+				 <&periph_clk BCM6362_CLK_ROBOSW>;
+
+			resets = <&periph_rst BCM6362_RST_ENETSW>,
+				 <&periph_rst BCM6362_RST_EPHY>;
+
+			power-domains = <&periph_pwr BCM6362_POWER_DOMAIN_ROBOSW>,
+					<&periph_pwr BCM6362_POWER_DOMAIN_GMII_PADS>;
+
+			dma-rx = <0>;
+			dma-tx = <1>;
+
+			status = "disabled";
+		};
+
+		switch0: switch@10e00000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-switch";
+			reg = <0x10e00000 0x8000>;
+			big-endian;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@8 {
+					reg = <8>;
+					label = "cpu";
+
+					phy-mode = "internal";
+					ethernet = <&ethernet>;
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+			};
+		};
+
+		mdio: mdio@10e000b0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6368-mdio-mux";
+			reg = <0x10e000b0 0x8>;
+
+			mdio_int: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				phy1: ethernet-phy@1 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <2>;
+				};
+
+				phy3: ethernet-phy@3 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <3>;
+				};
+
+				phy4: ethernet-phy@4 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <4>;
+				};
+			};
+
+			mdio_ext: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+			};
+		};
 	};
 };
diff --git a/target/linux/bmips/dts/bcm6368-comtrend-vr-3025u.dts b/target/linux/bmips/dts/bcm6368-comtrend-vr-3025u.dts
index 683b01875e..b597a05f3a 100644
--- a/target/linux/bmips/dts/bcm6368-comtrend-vr-3025u.dts
+++ b/target/linux/bmips/dts/bcm6368-comtrend-vr-3025u.dts
@@ -59,6 +59,12 @@
 	status = "okay";
 };
 
+&ethernet {
+	status = "okay";
+
+	mtd-mac-address = <&cfe 0x6a0>;
+};
+
 &ohci {
 	status = "okay";
 };
@@ -96,6 +102,38 @@
 		     &pinctrl_ephy2_led &pinctrl_ephy3_led>;
 };
 
+&switch0 {
+	ports {
+		port@0 {
+			reg = <0>;
+			label = "lan1";
+
+			phy-handle = <&phy1>;
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan2";
+
+			phy-handle = <&phy2>;
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan3";
+
+			phy-handle = <&phy3>;
+		};
+
+		port@3 {
+			reg = <3>;
+			label = "lan4";
+
+			phy-handle = <&phy4>;
+		};
+	};
+};
+
 &uart0 {
 	status = "okay";
 };
diff --git a/target/linux/bmips/dts/bcm6368.dtsi b/target/linux/bmips/dts/bcm6368.dtsi
index 5aa2b82221..5b5064b29e 100644
--- a/target/linux/bmips/dts/bcm6368.dtsi
+++ b/target/linux/bmips/dts/bcm6368.dtsi
@@ -467,6 +467,99 @@
 
 			resets = <&periph_rst BCM6368_RST_IPSEC>;
 		};
+
+		ethernet: ethernet@10006800 {
+			compatible = "brcm,bcm6368-enetsw";
+			reg = <0x10006800 0x80>,
+			      <0x10006a00 0x80>,
+			      <0x10006c00 0x80>;
+			reg-names = "dma",
+				    "dma-channels",
+				    "dma-sram";
+
+			interrupt-parent = <&periph_intc>;
+			interrupts = <BCM6368_IRQ_ENETSW_RX_DMA0>,
+				     <BCM6368_IRQ_ENETSW_TX_DMA0>;
+			interrupt-names = "rx",
+					  "tx";
+
+			clocks = <&periph_clk BCM6368_CLK_SWPKT_USB>,
+				 <&periph_clk BCM6368_CLK_SWPKT_SAR>,
+				 <&periph_clk BCM6368_CLK_ROBOSW>;
+
+			resets = <&periph_rst BCM6368_RST_SWITCH>,
+				 <&periph_rst BCM6368_RST_EPHY>;
+
+			dma-rx = <0>;
+			dma-tx = <1>;
+
+			status = "disabled";
+		};
+
+		switch0: switch@10f00000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6328-switch";
+			reg = <0x10f00000 0x8000>;
+			big-endian;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@8 {
+					reg = <8>;
+					label = "cpu";
+
+					phy-mode = "internal";
+					ethernet = <&ethernet>;
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
+				};
+			};
+		};
+
+		mdio: mdio@10f000b0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "brcm,bcm6368-mdio-mux";
+			reg = <0x10f000b0 0x8>;
+
+			mdio_int: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+
+				phy1: ethernet-phy@1 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <1>;
+				};
+
+				phy2: ethernet-phy@2 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <2>;
+				};
+
+				phy3: ethernet-phy@3 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <3>;
+				};
+
+				phy4: ethernet-phy@4 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <4>;
+				};
+			};
+
+			mdio_ext: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+			};
+		};
 	};
 
 	pflash: nor@18000000 {