# 以太網使用指南 ## 一、U-Boot適配Ethernet U-Boot 2017已經支持了sun8i-emac的驅動，只需要在編譯時選上并且修改dts就行。 + 進入u-boot源碼目錄： ```shell $ make LicheePi_Zero_defconfig $ make menuconfig ```  + 選擇 **Device Drivers --->**  + 選擇 **Network device support --->** 并選中 **Allwinner Sun8i Ethernet MAC support**  + 修改dts sun8i-v3s-licheepi-zero.dts： ```diff diff --git a/arch/arm/dts/sun8i-v3s-licheepi-zero.dts b/arch/arm/dts/sun8i-v3s-licheepi-zero.dts index 3d9168c..b8b9fc3 100644 --- a/arch/arm/dts/sun8i-v3s-licheepi-zero.dts +++ b/arch/arm/dts/sun8i-v3s-licheepi-zero.dts @@ -49,6 +49,7 @@ compatible = "licheepi,licheepi-zero", "allwinner,sun8i-v3s"; aliases { + ethernet0 = &emac; serial0 = &uart0; }; @@ -81,3 +82,14 @@ usb0_id_det-gpio = <&pio 5 6 GPIO_ACTIVE_HIGH>; status = "okay"; }; + +&emac { + phy = <&phy0>; + phy-mode = "mii"; + allwinner,use-internal-phy; + allwinner,leds-active-low; + status = "okay"; + phy0: ethernet-phy@0 { + reg = <1>; + }; +}; ``` sun8i-v3s.dtsi： ```diff diff --git a/arch/arm/dts/sun8i-v3s.dtsi b/arch/arm/dts/sun8i-v3s.dtsi index ebefc0f..cb81dd5 100644 --- a/arch/arm/dts/sun8i-v3s.dtsi +++ b/arch/arm/dts/sun8i-v3s.dtsi @@ -96,6 +96,11 @@ #size-cells = <1>; ranges; + syscon: syscon@01c00000 { + compatible = "allwinner,sun8i-h3-syscon","syscon"; + reg = <0x01c00000 0x34>; + }; + mmc0: mmc@01c0f000 { compatible = "allwinner,sun7i-a20-mmc"; reg = <0x01c0f000 0x1000>; @@ -208,6 +213,17 @@ interrupt-controller; #interrupt-cells = <3>; + emac_rgmii_pins: emac0@0 { + 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 { pins = "PB8", "PB9"; function = "uart0"; @@ -270,6 +286,20 @@ status = "disabled"; }; + emac: ethernet@1c30000 { + compatible = "allwinner,sun8i-h3-emac"; + reg = <0x01c30000 0x104>, <0x01c00030 0x4>; + reg-names = "emac", "syscon"; + interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>; + resets = <&ccu RST_BUS_EMAC>, <&ccu RST_BUS_EPHY>; + reset-names = "ahb", "ephy"; + clocks = <&ccu CLK_BUS_EMAC>, <&ccu CLK_BUS_EPHY>; + 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>, ``` + 編譯： ```shell $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- ``` + 燒寫： ```shell $ dd if=u-boot-sunxi-with-spl.bin of=${card} bs=1024 seek=8 ``` + 使用Ethernet：  如果出現：`*** ERROR: `ipaddr' not set`，就需要設置下自己的ip： `setenv ipaddr 192.168.1.111` ## 二、Kernel適配Ethernet 在最新的linux 4.14內核中，已經增加了對以太網的支持。 目前Linux 4.12還沒又對sun8i-emac進行支持，所以Kernel要使用V3s的以太網要打sun8i-emac的補丁還有修改dts文件。 + 打上sun8i-emac補丁： 拉下我已經適配好的內核源碼： [https://github.com/techping/linux/tree/licheepi-zero](https://github.com/techping/linux/tree/licheepi-zero) + 修改dts(上面git倉庫是已經修改完的)： sun8i-v3s-licheepi-zero.dts： ```diff index 387fc2a..904e60e 100644 --- a/arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts +++ b/arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts @@ -50,6 +50,7 @@ aliases { serial0 = &uart0; + ethernet0 = &emac; }; chosen { @@ -101,3 +102,10 @@ usb0_id_det-gpio = <&pio 5 6 GPIO_ACTIVE_HIGH>; status = "okay"; }; + +&emac { + phy-handle = <&int_mii_phy>; + phy-mode = "mii"; + allwinner,leds-active-low; + status = "okay"; +}; ``` sun8i-v3s.dtsi： ```diff diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi index 7107596..65be2ab 100644 --- a/arch/arm/boot/dts/sun8i-v3s.dtsi +++ b/arch/arm/boot/dts/sun8i-v3s.dtsi @@ -40,7 +40,10 @@ * OTHER DEALINGS IN THE SOFTWARE. */ +#include <dt-bindings/clock/sun8i-v3s-ccu.h> +#include <dt-bindings/reset/sun8i-v3s-ccu.h> #include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/pinctrl/sun4i-a10.h> / { #address-cells = <1>; @@ -93,6 +96,12 @@ #size-cells = <1>; ranges; + syscon: syscon@1c00000 { + compatible = "allwinner,sun8i-h3-system-controller", + "syscon"; + reg = <0x01c00000 0x1000>; + }; + mmc0: mmc@01c0f000 { compatible = "allwinner,sun7i-a20-mmc"; reg = <0x01c0f000 0x1000>; @@ -205,6 +214,17 @@ interrupt-controller; #interrupt-cells = <3>; + emac_rgmii_pins: emac0@0 { + 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>; + }; + i2c0_pins: i2c0 { pins = "PB6", "PB7"; function = "i2c0"; @@ -295,6 +315,31 @@ #size-cells = <0>; }; + emac: ethernet@1c30000 { + compatible = "allwinner,sun8i-h3-emac"; + syscon = <&syscon>; + reg = <0x01c30000 0x104>; + interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "macirq"; + resets = <&ccu RST_BUS_EMAC>; + reset-names = "stmmaceth"; + clocks = <&ccu CLK_BUS_EMAC>; + clock-names = "stmmaceth"; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + + mdio: mdio { + #address-cells = <1>; + #size-cells = <0>; + int_mii_phy: ethernet-phy@0 { + compatible = "ethernet-phy-ieee802.3-c22"; + reg = <1>; + clocks = <&ccu CLK_BUS_EPHY>; + resets = <&ccu RST_BUS_EPHY>; + }; + }; + }; gic: interrupt-controller@01c81000 { compatible = "arm,cortex-a7-gic", "arm,cortex-a15-gic"; reg = <0x01c81000 0x1000>, ``` + 進入內核目錄： ```shell $ make sunxi_defconfig ARCH=arm $ make menuconfig ARCH=arm ``` + 選擇 **Device Drivers --->** + 選擇 **Network device support --->** + 選擇 **Ethernet driver support --->** + 選擇 ~~~ [*] STMicroelectronics devices x x <*> STMicroelectronics 10/100/1000/EQOS Ethernet driver <*> STMMAC Platform bus support x x < > Support for snps,dwc-qos-ethernet.txt DT binding. <*> Generic driver for DWMAC x x <*> Allwinner GMAC support x x <*> Allwinner sun8i GMAC support ~~~ + 編譯 ```shell $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- ``` 得到zImage和sun8i-v3s-licheepi-zero.dtb + 燒寫 將內核、dtb、rootfs刷入sd卡中，啟動： ```shell $ ifup eth0 ```  eth0啟動成功！  **Ethernet驅動適配成功！**