Hi Neil, On Sun, Sep 8, 2019 at 8:33 PM Neil Armstrong <narmstr...@baylibre.com> wrote: > > 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 <narmstr...@baylibre.com> > > 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 ?
Yes, that will definitely help. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot