+Vigesh On 13/09/17 17:26, Chris Welch wrote: > We are developing a product based on the TI AM5728 EVM. The product utilizes > a TUSB7340 PCIe USB host for additional ports. The TUSB7340 is detected and > setup properly and works OK with low data rate devices. However, hot > plugging a Realtek USB network adapter and doing Ethernet transfer bandwidth > testing using iperf3 causes the TUSB7340 host to be locked out. The > TUSB7340 host appears to no longer communicate and the logging indicates > xhci_hcd 0000:01:00.0: HC died; cleaning up. Same issue occurs with another > USB Ethernet adapter I tried (Asus). > > We looked at using another host and found a mini PCIe card that utilizes the > µPD720201 and can be directly installed on the TI AM5728 EVM. The card is > detected properly and we reran the transfer test. The uPD720201 gets locks > out with the same problem. > > The AM5728 testing was performed using the TI SD card stock > am57xx-evm-linux-04.00.00.04.img, kernel am57xx-evm 4.9.28-geed43d1050, and > it reports that it is using the TI AM572x EVM Rev A3 device tree. > > It shows the following logging when it fails (this is with the TI EVM and > uPD720201). > > [ 630.400899] xhci_hcd 0000:01:00.0: xHCI host not responding to stop > endpoint command. > [ 630.408769] xhci_hcd 0000:01:00.0: Assuming host is dying, halting host. > [ 630.420849] r8152 2-4:1.0 enp1s0u4: Tx status -108 > [ 630.425667] r8152 2-4:1.0 enp1s0u4: Tx status -108 > [ 630.430483] r8152 2-4:1.0 enp1s0u4: Tx status -108 > [ 630.435297] r8152 2-4:1.0 enp1s0u4: Tx status -108 > [ 630.440122] xhci_hcd 0000:01:00.0: HC died; cleaning up > [ 630.453961] usb 2-4: USB disconnect, device number 2 > > The problem appears to be a general driver issue given we get the same > problem with both the TUSB7340 and the µPD720201. > > I've tried the 4.4.49, 4.12.3 and 4.13.1 kernels and they also fail. > > I tried the TI E2E support community and they were unable to provide any > solutions. > > Here is a sample session with the TUSB7340: > > root@arm:~# !iperf3 > iperf3 -c 10.14.21.95 -t 6000 > Connecting to host 10.14.21.95, port 5201 > [ 4] local 10.14.21.89 port 60978 connected to 10.14.21.95 port 5201 > [ ID] Interval Transfer Bandwidth Retr Cwnd > [ 4] 0.00-1.00 sec 14.2 MBytes 119 Mbits/sec 1 1.41 KBytes > [ 4] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > [ 4] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > [ 4] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > [ 4] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > [ 4] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > [ 4] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > ^C[ 4] 7.00-7.48 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bandwidth Retr > [ 4] 0.00-7.48 sec 14.2 MBytes 15.9 Mbits/sec 1 sender > [ 4] 0.00-7.48 sec 0.00 Bytes 0.00 bits/sec receiver > iperf3: interrupt - the client has terminated > root@arm:~# [ 118.187204] xhci_hcd 0001:07:00.0: xHCI host controller not > responding, assume dead > [ 118.196419] xhci_hcd 0001:07:00.0: HC died; cleaning up > > Any suggestions on how we can address this problem? > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
-- cheers, -roger Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
