am335x 内核如何从单网口配置成双网口

大家好，想请教一个问题，我们做了一个板子带有两个网口，一个是RGMII，一个是RMII，由于开始用的内核和文件系统是从BBB上移植过来的，所以只能支持一个网口（RGMII已经调通正常工作），现在需要配置成双网口，但是按照TI给的那个AM335x CPSW (Ethernet) Driver's Guide却找不到   [*]  TI CPSW Switch as Dual EMAC这个选项，我看SDK 6，7,8，都没有这个选项，后来看网上说的用设备树的方法配置，也没有成功，请大牛们给与一点指示，非常感谢！

[ 0.112010] hw-breakpoint: debug architecture 0x4 unsupported.
[ 0.113290] cpsw.0: No hwaddr in dt. Using 1c:ba:8c:90:7f:cb from efuse
[ 0.113312] cpsw.1: No hwaddr in dt. Using 1c:ba:8c:90:7f:cd from efuse

[ 0.497908] mmcblk0: p1 p2
[ 0.499707] mmcblk0boot1: unknown partition table
[ 0.500935] mmcblk0boot0: unknown partition table
[ 0.506848] libphy: 4a101000.mdio: probed
[ 0.506877] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver unknown
[ 0.506891] davinci_mdio 4a101000.mdio: phy[19]: device 4a101000.mdio:13, driver unknown
[ 0.506903] davinci_mdio 4a101000.mdio: phy[31]: device 4a101000.mdio:1f, driver unknown
[ 0.507090] Detected MACID = 1c:ba:8c:90:7f:cb
[ 0.507200] cpsw 4a100000.ethernet: NAPI disabled
[ 0.508521] omap_rtc 44e3e000.rtc: setting system clock to 2014-05-16 02:10:50 UTC (1400206250)

[ 10.552607] gadget: high-speed config #1: Multifunction with RNDIS
[ 20.161820] net eth0: initializing cpsw version 1.12 (0)
[ 20.166070] net eth0: phy found : id is : 0x4dd074
[ 20.167492] net eth0: phy found : id is : 0x2000a211
[ 20.177924] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 22.173018] libphy: 4a101000.mdio:00 – Link is Up – 100/Full
[ 22.173066] libphy: 4a101000.mdio:1f – Link is Up – 0/Half
[ 22.173627] libphy: 4a101000.mdio:1f – Link is Down
[ 22.173700] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 22.858819] net eth0: initializing cpsw version 1.12 (0)
[ 22.861402] net eth0: phy found : id is : 0x4dd074
[ 22.861979] net eth0: phy found : id is : 0x2000a211
[ 22.866096] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 23.236890] net eth0: initializing cpsw version 1.12 (0)
[ 23.239440] net eth0: phy found : id is : 0x4dd074
[ 23.239624] net eth0: phy found : id is : 0x2000a211
[ 23.243917] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 25.247262] libphy: 4a101000.mdio:00 – Link is Up – 100/Full
[ 25.247917] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
root@U-NEST:~# ifconfig

jack chen51：

请问一下楼主，问题解决了吗？我也遇到同样问题了，希望可以得到解答，谢谢你！

yongqing wang：

回复 jack chen51:

make menuconfig 配置内核支持Drivers for SMSC PHYs

yongqing wang：

回复 yongqing wang:

参考一下这个帖子吧：www.cnblogs.com/…/8384186.html

jack chen51：

回复 yongqing wang:

好的谢谢

jack chen51：

回复 yongqing wang:

请教一下，我找不到 Drivers for SMSC PHYs 选项。
kernel 4.9.147，从 github.com/…/4.9 下载的

配置步骤是：
make distcleanmake ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bb.org_defconfigmake ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig

但是 Device Drivers > Network device support > PHY Device support and infrastructure > 没有此选项，见下图：

yongqing wang：

回复 jack chen51:

换个版本的看看

jack chen51：

回复 yongqing wang:

请问一下，推荐的版本是？

或者，推荐的内核配置是？

直接使用 ti-processor-sdk-linux-am335x-evm-05.02.00.10 吗？

jack chen51：

回复 yongqing wang:

大神你好，我把我的问题整理了一下，开了一个问题：
e2echina.ti.com/…/514248

可以解答一下吗？谢谢您！！！

yongqing wang：

回复 jack chen51:

你试试4.4.12的内核版本

yongqing wang：

回复 yongqing wang:

又找了实现过程比较新且比较完整的经验贴给你看看：blog.csdn.net/…/79802735