USB口有时就没反应了，插入U盘没反应

eric wangxj

Other Parts Discussed in Thread: AM3352

我的AM3352， PSP是linux-3.2-psp04.06.00.07.sdk

USB口做host模式，接U盘用。

但是在产品使用过程中，偶尔会发生U盘插入后，没有任何反应，hotplug没收到任何信息。

查看日志信息，发现还有这些可以信息：

[ 7384.321136] ti81xx_interrupt 911: CAUTION: musb1: Babble Interrupt Occured
[ 7384.328308] ti81xx_interrupt 912: Please issue long reset to make usb functional !!
[ 7384.336486] hub 2-0:1.0: state 7 ports 1 chg 0000 evt 0002
[ 7384.336517] hub 2-0:1.0: port 1, status 0101, change 0003, 12 Mb/s
[ 7384.494689] hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
[ 7384.554718] hub 2-0:1.0: unable to enumerate USB device on port 1
[ 7384.561126] hub 2-0:1.0: state 7 ports 1 chg 0000 evt 0002
[ 7384.561157] hub 2-0:1.0: port 1, status 0101, change 0003, 12 Mb/s
[ 7384.714691] hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
[ 7384.775726] ti81xx_interrupt 911: CAUTION: musb1: Babble Interrupt Occured
[ 7384.782897] ti81xx_interrupt 912: Please issue long reset to make usb functional !!
[ 7384.834716] usb 2-1: new full-speed USB device number 44 using musb-hdrc

请问什么原因。

10 年多前

0 Jian Zhou 10 年多前

TI__Mastermind 45260 points

首先确定下USB HOST这部分的原理图设计是不是按照我们下面的guide做的：

http://processors.wiki.ti.com/index.php/AM335x_Schematic_Checklist#USB

其次感觉你用的软件版本你比较老，建议用SDK06

0 eric wangxj 10 年多前回复 Jian Zhou

Intellectual 530 points

硬件工程师检查了，硬件设计上没问题，我今天又一次碰到这个问题

[59444.213623] usb-storage: Bulk status result = 0
[59444.213653] usb-storage: Bulk Status S 0x53425355 T 0x143 R 0 Stat 0x0
[59444.213653] usb-storage: scsi cmd done, result=0x0
[59444.213684] usb-storage: *** thread sleeping.
[59444.222045] usb-storage: queuecommand_lck called
[59444.222106] usb-storage: *** thread awakened.
[59444.222106] usb-storage: Command WRITE_10 (10 bytes)
[59444.222137] usb-storage: 2a 00 00 00 08 01 00 00 01 00
[59444.222167] usb-storage: Bulk Command S 0x43425355 T 0x144 L 512 F 0 Trg 0 LUN 0 CL 10
[59444.222167] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
[59444.222320] usb-storage: Status code 0; transferred 31/31
[59444.222320] usb-storage: -- transfer complete
[59444.222320] usb-storage: Bulk command transfer result=0
[59444.222351] usb-storage: usb_stor_bulk_transfer_sglist: xfer 512 bytes, 1 entries
[59444.222473] usb-storage: Status code 0; transferred 512/512
[59444.222473] usb-storage: -- transfer complete
[59444.222473] usb-storage: Bulk data transfer result 0x0
[59444.222473] usb-storage: Attempting to get CSW...
[59444.222503] usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes
[59444.223022] usb-storage: Status code 0; transferred 13/13
[59444.223022] usb-storage: -- transfer complete
[59444.223052] usb-storage: Bulk status result = 0
[59444.223052] usb-storage: Bulk Status S 0x53425355 T 0x144 R 0 Stat 0x0
[59444.223083] usb-storage: scsi cmd done, result=0x0
[59444.223114] usb-storage: *** thread sleeping.
[61395.863189] hub 2-0:1.0: state 7 ports 1 chg 0000 evt 0002
[61395.863250] hub 2-0:1.0: port 1, status 0100, change 0001, 12 Mb/s
[61395.863250] usb 2-1: USB disconnect, device number 10, portnum 1
[61395.869567] usb 2-1: unregistering device
[61395.869567] usb 2-1: unregistering interface 2-1:1.0
[61395.869598] device: 'ep_81': device_unregister
[61395.869598] PM: Removing info for No Bus:ep_81
[61395.869689] device: 'ep_02': device_unregister
[61395.869720] PM: Removing info for No Bus:ep_02
[61395.869781] PM: Removing info for usb:2-1:1.0
[61395.869842] bus: 'usb': remove device 2-1:1.0
[61395.869873] usb-storage: storage_disconnect() called
[61395.869873] device: '9:0:0:0': device_unregister
[61395.869903] PM: Removing info for No Bus:9:0:0:0
[61395.870483] PM: Removing info for scsi:9:0:0:0
[61395.870574] bus: 'scsi': remove device 9:0:0:0
[61395.870605] PM: Removing info for No Bus:9:0:0:0
[61395.888000] PM: Removing info for No Bus:sda1
[61395.888977] device: '8:0': device_unregister
[61395.889007] PM: Removing info for No Bus:8:0
[61395.892242] device: '8:0': device_create_release
[61395.892364] PM: Removing info for No Bus:sda
[61395.899719] device: 'host9': device_unregister
[61395.899749] PM: Removing info for No Bus:host9
[61395.906799] PM: Removing info for scsi:host9
[61395.906890] bus: 'scsi': remove device host9
[61395.909637] usb-storage: -- usb_stor_release_resources
[61395.909667] usb-storage: -- sending exit command to thread
[61395.909667] usb-storage: *** thread awakened.
[61395.909698] usb-storage: -- exiting
[61395.909790] usb-storage: -- dissociate_dev
[61395.922698] usb 2-1: usb_disable_device nuking all URBs
[61395.922729] device: 'ep_00': device_unregister
[61395.922729] PM: Removing info for No Bus:ep_00
[61395.922882] PM: Removing info for usb:2-1
[61395.923004] bus: 'usb': remove device 2-1
[61395.923034] device: 'usbdev2.10': device_unregister
[61395.923034] PM: Removing info for No Bus:usbdev2.10
[61395.925994] device: 'usbdev2.10': device_create_release
[61396.084686] hub 2-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x100
[61396.293151] PM: Removing info for scsi:target9:0:0
[61396.293243] bus: 'scsi': remove device target9:0:0
[69246.862823] am335x_keybutton receive button_interrupt
[69246.868103] am335x_keybutton Signal= 1
[69246.902282] am335x_keybutton receive button_interrupt
[69246.907562] am335x_keybutton Signal= 1
[69246.911590] am335x_keybutton receive button_interrupt
[69246.916839] am335x_keybutton Signal= 1
[69251.776306] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[69251.776367] hub 1-0:1.0: port 1, status 0101, change 0001, 12 Mb/s
[69251.934692] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
[69251.994903] ti81xx_interrupt 911: CAUTION: musb0: Babble Interrupt Occured
[69252.002105] ti81xx_interrupt 912: Please issue long reset to make usb functional !!
[69252.054687] usb 1-1: new high-speed USB device number 3 using musb-hdrc
[69257.054779] usb 1-1: khubd timed out on ep0in len=0/64
[69262.054748] usb 1-1: khubd timed out on ep0in len=0/64
[69267.054779] usb 1-1: khubd timed out on ep0in len=0/64
[69267.114746] hub 1-0:1.0: unable to enumerate USB device on port 1
[69267.121124] ti81xx_interrupt 911: CAUTION: musb0: Babble Interrupt Occured
[69267.128295] ti81xx_interrupt 912: Please issue long reset to make usb functional !!
[69267.136352] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[69267.136383] hub 1-0:1.0: port 1, status 0501, change 0003, 480 Mb/s
[69267.294677] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x501
[69267.414672] usb 1-1: new high-speed USB device number 4 using musb-hdrc
[69272.414794] usb 1-1: khubd timed out on ep0in len=0/64
[69277.414764] usb 1-1: khubd timed out on ep0in len=0/64
[69282.414764] usb 1-1: khubd timed out on ep0in len=0/64
[69282.474761] hub 1-0:1.0: unable to enumerate USB device on port 1
[69282.481140] ti81xx_interrupt 911: CAUTION: musb0: Babble Interrupt Occured
[69282.488311] ti81xx_interrupt 912: Please issue long reset to make usb functional !!
[69282.496398] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[69282.496429] hub 1-0:1.0: port 1, status 0501, change 0003, 480 Mb/s
[69282.654693] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x501
[69282.774688] usb 1-1: new high-speed USB device number 5 using musb-hdrc

日志分析：
1、为什么在[61395.863189]行附近，出现USB设备断掉连接情况

[61395.863189] hub 2-0:1.0: state 7 ports 1 chg 0000 evt 0002
[61395.863250] hub 2-0:1.0: port 1, status 0100, change 0001, 12 Mb/s
[61395.863250] usb 2-1: USB disconnect, device number 10, portnum 1
[61395.869567] usb 2-1: unregistering device

0 Steven Liu1 10 年多前回复 eric wangxj

TI__Mastermind 25020 points

确认两点：

1. 这个脚是做的OTG，还是HOST？如果是配置成为了HOST，USB_ID脚是否有接地了。

2. USB_VBUS是否是直接接在电源的5V上面的，如果是的话，建议增加一个patch，参考：

http://e2e.ti.com/support/arm/sitara_arm/f/791/p/333490/1163908

diff --git a/arch/arm/mach-omap2/omap_phy_internal.c b/arch/arm/mach-omap2/omap_phy_internal.c
index 13bfef3..e41b224 100644
--- a/arch/arm/mach-omap2/omap_phy_internal.c
+++ b/arch/arm/mach-omap2/omap_phy_internal.c
@@ -288,8 +288,17 @@ void ti81xx_musb_phy_power(u8 id, u8 on , bool wkup)
                                                TI816X_USBPHY0_NORMAL_MODE;
                        usbphycfg &= ~TI816X_USBPHY_REFCLK_OSC;
                } else if (cpu_is_am33xx()) {
-                       usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN);
-                       usbphycfg |= (USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN);
+                       usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN | USBPHY_OTGVDET_EN);
+
+                       /* HACK: If USB0 port is in host-only mode, clear its
+                        * USBPHY_OTGVDET_EN bit to ignore first VBUS sensing.
+                        * Change 0 to 1 if USB1 port is in host-only mode.
+                        */
+                       if (id == 0)
+                               usbphycfg |= USBPHY_OTGSESSEND_EN;
+                       else
+                               usbphycfg |= (USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN);
+
                        usbwkupctrl = AM33XX_USB_WKUP_CTRL_DISABLE;
                }