【智能路由器】让MT7620固件openwrt支持USB

【智能路由器】系列文章连接
http://blog.csdn.net/u012819339/article/category/5803489

---

首先确定硬件有USB，这个得检查板子是否引出了usb口，一把来说mt7620的板子是引出了的。

文件改动：
在./openwrt/garget/linux/ramips/dts/文件夹下，确定MT7620a.dts文件是否有例如以下内容，status = “okay”非常重要。

    ehci@101c0000 {
        status = "okay";
    };

    ohci@101c1000 {
        status = "okay";
    };

接着，还是在./openwrt/garget/linux/ramips/dts/文件夹下，将文件 mt7620a.dtsi 例如以下内容：

    ehci@101c0000 {
        compatible = "ralink,rt3xxx-ehci";
        reg = <0x101c0000 0x1000>;

        interrupt-parent = <&intc>;
        interrupts = <18>;

        status = "disabled";
    };

    ohci@101c1000 {
        compatible = "ralink,rt3xxx-ohci";
        reg = <0x101c1000 0x1000>;

        interrupt-parent = <&intc>;
        interrupts = <18>;

        status = "disabled";
    };

status = “disabled”凝视掉，更改成这样：

    ehci@101c0000 {
        compatible = "ralink,rt3xxx-ehci";
        reg = <0x101c0000 0x1000>;

        interrupt-parent = <&intc>;
        interrupts = <18>;

        #status = "disabled";
    };

    ohci@101c1000 {
        compatible = "ralink,rt3xxx-ohci";
        reg = <0x101c1000 0x1000>;

        interrupt-parent = <&intc>;
        interrupts = <18>;

        #status = "disabled";
    };

运行make menuconfig ，加入USB相关支持

Kernel modules —> USB Support —> <*> kmod-usb-core.  
Kernel modules —> USB Support —> <*> kmod-usb-ohci.  
Kernel modules —> USB Support —> <*> kmod-usb-uhci.  
Kernel modules —> USB Support —> <*> kmod-usb-storage.
Kernel modules —> USB Support —> <*> kmod-usb-storage-extras.
Kernel modules —> USB Support —> <*> kmod-usb2. 

又一次编译即可了。

---

好啦，本文到此结束，作者arvik，【智能路由器】系列文章见
http://blog.csdn.net/u012819339/article/category/5803489