AM3359: 只使用一个PRU网口，设备树需要怎么修改

请问使用的SDK版本是多少？

Documentation/devicetree/bindings/net/ti-prueth.txt 中有 Example (am572x-idk board, single-emac) 的示例。

更多详细内容请查看：

software-dl.ti.com/.../PRU-ICSS_Ethernet.html

ti-processor-sdk-linux-rt-am335x-evm-04.03.00.05，单个PRU网口是不是需要修改内核驱动

1 1 说：

单个PRU网口是不是需要修改内核驱动

内核驱动应该不需要修改，建议先修改设备树看一下有没有问题，如果有问题我再帮您升级确认。

aliases {

ethernet2 = &pruss_emac1;
};

pruss_eth {
compatible = "ti,am3359-prueth";
pruss = <&pruss>;
sram = <&ocmcram>;
interrupt-parent = <&pruss_intc>;
status = "okay"; /*ZJJ modify,before :disabled*/

pinctrl-0 = <&pruss_eth_default>;
pinctrl-names = "default";

emac1: ethernet-mii1 {
phy-handle = <&pruss_eth1_phy>;
phy-mode = "mii";
interrupts = <21>, <23>;
interrupt-names = "rx", "tx";
/* Filled in by bootloader */
local-mac-address = [00 00 00 00 00 00];
};
};

设备树修改过了，应该没问题

目前是无法通信吗？什么现象？

可以识别到phy芯片，但是ifconfig查看不到

请将相关的log信息贴上来。

[ 1.146266] davinci_mdio 4a332400.mdio: davinci mdio revision 1.6
[ 1.152404] libphy: 4a332400.mdio: probed
[ 1.157816] davinci_mdio 4a332400.mdio: phy[1]: device 4a332400.mdio:01, driver unknown
[ 1.167786] remoteproc remoteproc1: 4a334000.pru0 is available
[ 1.173780] pru-rproc 4a334000.pru0: PRU rproc node /ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a334000 probed successfully
[ 1.185829] remoteproc remoteproc2: 4a338000.pru1 is available
[ 1.191780] pru-rproc 4a338000.pru1: PRU rproc node /ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a338000 probed successfully

......

[ 8.873772] prueth pruss_eth: pruss MC Mask 0:0:0:0:0:0
[ 8.902558] omap-sham 53100000.sham: hw accel on OMAP rev 4.3
[ 8.989677] prueth pruss_eth: could not get ptp tx irq
[ 9.007133] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2
[ 9.022957] omap-aes 53500000.aes: will run requests pump with realtime priority
[ 9.280123] prueth pruss_eth: pruss MC Mask 0:0:0:0:0:0
[ 9.359727] prueth pruss_eth: could not get ptp tx irq
Starting Network Service...
[ 9.889153] prueth pruss_eth: pruss MC Mask 0:0:0:0:0:0
[ 9.892281] remoteproc remoteproc0: powering up wkup_m3
[ OK ] Started Kernel Logging Service.
[ 10.025726] prueth pruss_eth: could not get ptp tx irq
[ 10.093642] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 224300
[ 10.093917] remoteproc remoteproc0: remote processor wkup_m3 is now up
[ 10.093971] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = 0x192

......

AM335x-Tronlong login: root (automatic login)
root@AM335x-Tronlong:~# ifconfig -a
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1%763852/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:320 errors:0 dropped:0 overruns:0 frame:0
TX packets:320 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:24320 (23.7 KiB) TX bytes:24320 (23.7 KiB)

sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

root@AM335x-Tronlong:~#

好的，感谢提供信息，你是指通过ifconfig -a查不到对应的网口是吗？通过ethtool eth0/1指令能查到信息吗？

是的，我看好像是pru的驱动没有执行，prueth.c这里没有执行

ethtool eth0/1指令也查看不到