TUSB9261: 判断是否成功识别USB的详细依据是什么？

有人帮忙解答疑惑吗？非常感谢！

您好，判断是USB2.0还是3.0是上位机来控制的，比如PC和TUSB9261连接，如果PC的USB接口是USB3.0，那么TUSB9261的USB连接就是3.0的，如果PC的USB 接口是２.０的，那么TUSB9261的USB连接的就是2.0的。

抱歉可能我描述得不是很准确，我想问的是我们目前是通过读取GPIO7的高低电平来判断USB3.0信号是否识别到，这个GPIO的状态是TUSB9261固件内部去切换的，我想知道这个内部的判断识别成功与否的依据是什么？

您好，是的，GPIO7 可以监测是否或判断USB3.0的连接。

我看到英文E2E上有一个和您相同的帖子，美国工程师也已经给出详细回复，您可以参考下：

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1022434/tusb9261-how-to-detect-the-connection-between-usb2-0-and-usb3-0/3780675#3780675

您好，美国那边跟咱们这边时差很大，您能帮忙回答下问题吗？感谢。

我们在切换到USB3.0检测的时候，TUSB9261的debug  UART口输出的信息如下，请问这些log信息怎么解读？能大致跟我们说下吗？或者有什么文档描述可以参考吗？谢谢。

========================================================
|| TUSB926x Firmware v1.03 [Sep 13 2013 17:02:30] ||
|| Device ID: 0x0000 ||
========================================================

Reset Flag(s): [Power-Up]

[0000000001] Datapath RAM Usage: 80208 / 81920 bytes.
[0000000001] Supported NCQ Depth: 32
[0000000001] U1/U2 Transistions: OFF
[0000000001] USB PHY Suspend: ON
[0000000001] SATA LPM: OFF
[0000000001] Device is Self-powered.
[0000000001] -> usb_hal_init()
[0000000001] USB Core Ver: 0x120a.
[0000000001] USB SSC is OFF.
[0000000051] -> usb_hal_connect()
[0000000051[0000000051] LTSSM state = (0x5) RX DETECT.
] -> ahci_init()
[0000000051] -> ahci_hba_reset()
[0000000065] USB Reset event occurred.
[0000000065] LTSSM state = (0x7) POLLING.
[0000000078] Connected at SUPER speed.
[0000000191] -> usb_hal_set_address() - addr: 0x1.
[0000000306] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000306] -> ahci_port_reset(0)
[0000000361] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000361] -> ahci_port_reset(0)
[0000000416] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000416] -> ahci_port_reset(0)
[0000000471] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000471] -> ahci_port_reset(0)
[0000000526] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000526] -> ahci_port_reset(0)
[0000000581] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000581] -> ahci_port_reset(0)
[0000000636] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000636] -> ahci_port_reset(0)
[0000000691] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000691] -> ahci_port_reset(0)
[0000000698] -> handle_usb_set_configuration() - val = 1.
[0000000704] -> handle_usb_set_interface() - num = 0, alt = 1.
[0000000704] -> ums_uas_reset()
[0000000746] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000746] -> ahci_port_reset(0)
[0000000801] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000801] -> ahci_port_reset(0)
[0000000856] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000856] -> ahci_port_reset(0)
[0000000911] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000911] -> ahci_port_reset(0)
[0000000966] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000000966] -> ahci_port_reset(0)
[0000001021] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001271] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001271] -> ahci_port_reset(0)
[0000001326] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001326] -> ahci_port_reset(0)
[0000001381] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001381] -> ahci_port_reset(0)
[0000001436] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001436] -> ahci_port_reset(0)
[0000001491] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001491] -> ahci_port_reset(0)
[0000001546] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001546] -> ahci_port_reset(0)
[0000001601] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001601] -> ahci_port_reset(0)
[0000001656] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001656] -> ahci_port_reset(0)
[0000001711] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001711] -> ahci_port_reset(0)
[0000001766] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001766] -> ahci_port_reset(0)
[0000001821] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001821] -> ahci_port_reset(0)
[0000001876] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001876] -> ahci_port_reset(0)
[0000001931] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000001931] -> ahci_port_reset(0)
[0000001986] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000002236] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.
[0000002236] @Error: Timeout waiting for PHY Ready. P0SSTS = 0x00000000, P0SERR = 0x00000000.
[0000002236] -> ums_uas_init_queue_depth() - 32.
[0000002236] Connected to[0000002236] -> ums_uas_send_sense_iu() - cmd_index = 0, status = 0x02, tag = 0x1f, CDB[0] = 0x00, retry = N.
0 AHCI device(s).
[0000002239] -> ums_uas_send_sense_iu() - cmd_index = 11, status = 0x02, tag = 0x1f, CDB[0] = 0x00, retry = N.