TUSB9261: TUSB9261为什么一直在复位？

您好，

下面E2E帖子中有一个与您类似的问题，请参考帖子中的回复，谢谢：

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/965070/tusb9261-tusb9261-continually-resets?tisearch=e2e-sitesearch&keymatch=TUSB9261%2520reset#

我们交叉了SATA_TXM和SATA_TXP，目前从芯片的串口可以看到正常输出了sata设备的信息，但是linux里却找不到生成的设备，这是什么原因？还有这个USB SSC is OFF 代表的是usb 3.0不可用吗？

芯片打印信息：

========================================================
|| TUSB926x Firmware v1.06 [Jan 5 2018 12:01:27] ||
|| Device ID: 0x0000 ||
========================================================

Reset Flag(s): [Watchdog] [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()
[0000000057] SATA Gen-2 speed negotiated.
[0000000065] USB Reset event occurred.
[0000000065] LTSSM state = (0x7) POLLING.
[0000000393]
[0000000393] ================================================
[0000000393] IDENTIFY DEVICE INFO
[0000000393] ================================================
[0000000393]
[0000000393] Model: KINGSTON SA400M8240G
[0000000393] FW Rev: SBFK62B3
[0000000393] Serial: 50026B7684697C88
[0000000393] TRIM Support: Yes
[0000000393]
[0000000393] Spec Compliance: ATA-7
[0000000393] Removable Media: No
[0000000393] UDMA Modes = 0x407f
[0000000393] PIO Modes = 0x0003
[0000000393]
[0000000393] LBA48: Yes
[0000000393] Max LBA = 0x00000000 1bf244b0
[0000000393] Write FUA: Yes
[0000000393] World Wide Name = 0x50026b76 84697c88
[0000000393]
[0000000393] SATA Speed: Gen3
[0000000393] NCQ Support: Yes
[0000000393] Queue Depth = 31
[0000000393]
[0000000393] Logical Sector Size = 512 bytes
[0000000393] Physical Sector Size = 512 bytes
[0000000393] Logical Sector Offset = 0
[0000000393]
[0000000393] ================================================

[0000000398] Connected to 1 AHCI device(s).

linux board打印信息：

[ 36.414293] usb 1-1.4: new high-speed USB device number 4 using cdns-usb3
[ 36.438694] usb 1-1.4: device descriptor read/8, error -71
[ 36.570475] usb 1-1.4: device descriptor read/8, error -71

后面我们又尝试了不交换TX极性的固件TUSB926x_FW_v1.06_SATA_NO_POLARITY_SWAP，目前sata设备能运行在usb 2.0下，请问怎么配置成usb3.0？

您好，我在E2E英文论坛看到有客户咨询了同样的问题，您可以参考E2E论坛的回复：

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1030331/tusb9261-why-tusb9261-always-reset-in-our-own-board?tisearch=e2e-sitesearch&keymatch=TUSB9261#

那也是我发的。