[PATCH 0/6] Allwinner H6 USB3 support

[Andre Heider]

Hi Samuel,

On 08/02/2021 06:57, Samuel Holland wrote:
> This series adds clock, PHY, and XHCI driver support for the USB3
> controller found in the Allwinner H6 SoC. Below is a log showing it
> functioning on the Orange Pi 3.
> 
> Cheers,
> Samuel
> 
> U-Boot 2021.04-rc1-00068-g6b8f4e0d060 (Jan 01 1970 - 00:00:00 +0000) Allwinner Technology
> 
> CPU:   Allwinner H6 (SUN50I)
> Model: OrangePi 3
> DRAM:  2 GiB
> MMC:   mmc at 4020000: 0, mmc at 4021000: 2, mmc at 4022000: 1
> Loading Environment from FAT... Unable to use mmc 1:0... In:    serial at 5000000
> Out:   serial at 5000000
> Err:   serial at 5000000
> Net:   No ethernet found.
> starting USB...
> Bus usb at 5101000: USB EHCI 1.00
> Bus usb at 5101400: USB OHCI 1.0
> Bus usb at 5200000: Register 2000140 NbrPorts 2
> Starting the controller
> USB XHCI 1.00
> Bus usb at 5311000: USB EHCI 1.00
> Bus usb at 5311400: USB OHCI 1.0
> scanning bus usb at 5101000 for devices... 1 USB Device(s) found
> scanning bus usb at 5101400 for devices... 1 USB Device(s) found
> scanning bus usb at 5200000 for devices... 4 USB Device(s) found
> scanning bus usb at 5311000 for devices... 1 USB Device(s) found
> scanning bus usb at 5311400 for devices... 1 USB Device(s) found
>         scanning usb for storage devices... 1 Storage Device(s) found
> Hit any key to stop autoboot:  0

on my OrangePi3 I get this upon power up (with an usb3 flash drive as 
well as a SD card reader):

starting USB...
Bus usb at 5101000: USB EHCI 1.00
Bus usb at 5101400: USB OHCI 1.0
Bus usb at 5200000: Register 2000140 NbrPorts 2
Starting the controller
USB XHCI 1.00
Bus usb at 5311000: USB EHCI 1.00
Bus usb at 5311400: USB OHCI 1.0
scanning bus usb at 5101000 for devices... 1 USB Device(s) found
scanning bus usb at 5101400 for devices... 1 USB Device(s) found
scanning bus usb at 5200000 for devices... cannot reset port 2!?
Device NOT ready
    Request Sense returned 02 3A 00
4 USB Device(s) found
scanning bus usb at 5311000 for devices... 1 USB Device(s) found
scanning bus usb at 5311400 for devices... 1 USB Device(s) found
        scanning usb for storage devices... 1 Storage Device(s) found
Hit any key to stop autoboot:  0



A second retry makes the usb at 5200000 pass though.

May be related, but sometimes it can then boot off the usb device, but 
sometimes I get this:

=> setenv boot_targets usb0
=> boot

Device 0: Vendor: Generic- Rev: 1.00 Prod: USB3.0 CRW   -SD
             Type: Removable Hard Disk
             Capacity: 1876.0 MB = 1.8 GB (3842048 x 512)
... is now current device
Scanning usb 0:1...
WARN halted endpoint, queueing URB anyway.
Unexpected XHCI event TRB, skipping... (bbf55f10 00000000 13000000 03008401)
BUG at drivers/usb/host/xhci-ring.c:500/abort_td()!
BUG!
resetting ...



And sometimes it get further but then fails shortly after:

=> setenv boot_targets usb0
=> boot

Device 0: Vendor: Generic- Rev: 1.00 Prod: USB3.0 CRW   -SD
             Type: Removable Hard Disk
             Capacity: 1876.0 MB = 1.8 GB (3842048 x 512)
... is now current device
Scanning usb 0:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
206 bytes read in 4 ms (49.8 KiB/s)
1:	LibreELEC
Retrieving file: /KERNEL
23058440 bytes read in 1135 ms (19.4 MiB/s)
append: boot=UUID=1111-5929 
disk=UUID=bb4dea68-a794-4306-ac3e-c6d585ec2a6b console=ttyS0,115200 
console=tty1 systemd.debug_shell=ttyS0 quiet
Retrieving file: /sun50i-h6-orangepi-3.dtb
WARN halted endpoint, queueing URB anyway.
Unexpected XHCI event TRB, skipping... (bbf55f10 00000000 13000000 03008400)
BUG at drivers/usb/host/xhci-ring.c:500/abort_td()!
BUG!
resetting ...