Hi Bin, Le 07/09/2019 à 05:44, Bin Meng a écrit : > Hi Neil, > > On Thu, Sep 5, 2019 at 11:48 PM Neil Armstrong <[email protected]> > wrote: >> >> Hi Bin, >> >> I've been having the same behavior on the Amlogic S905X SoC with a DWC3 XHCI >> controller >> connected to 2 HS-only PHYs and no SS PHY. >> >> When a device is connected on the second PHY, I have the same BUG(), >> but no more when a device is also connected on the first PHY, and no issues >> at all on the first PHY. >> >> XHCI timeout on event type 33... cannot recover. >> >> What kind of debug output would you need to debug this ? >> >> => When Port 1 is disconnected, but Port 2 is populated: >> usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x2 >> length 0x0 >> clear port connect change, actual port 2 status = 0x6e1 >> ... >> usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x2 length >> 0x0 >> ... >> usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length >> 0x4 >> SPEED = FULLSPEED >> ... >> usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x2 length >> 0x0 >> ... >> usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length >> 0x4 >> SPEED = FULLSPEED >> ... >> usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x2 >> length 0x0 >> clear port reset change, actual port 2 status = 0x603 >> >> >> => When Port 1 is populated: >> usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x2 >> length 0x0 >> clear port connect change, actual port 2 status = 0x6e1 >> ... >> usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x2 length >> 0x0 >> ... >> usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length >> 0x4 >> SPEED = FULLSPEED >> ... >> usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x2 length >> 0x0 >> ... >> usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length >> 0x4 >> SPEED = HIGHSPEED >> ... >> usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x2 >> length 0x0 >> clear port reset change, actual port 2 status = 0xe03 >> >> When Port 1 is populated, Port 2 status correctly switches to HIGHSPEED, >> but why ? >> > > This looks really strange. Sounds like a hardware internal state > depends on the first USB port. Do you know if Linux works?
Yes, Linux works fine, is it worth tracing the Linux XHCI driver aswell ? Neil > > Regards, > Bin > _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
