Hi Marek, On Thu, Jun 22, 2017 at 3:13 PM, Bin Meng <bmeng...@gmail.com> wrote: > Currently U-Boot xHCI driver does not work on Intel BayTrail SoC based > boards that have USB 3.0 ports. Trying to do a 'usb start' simply hangs > the board. This series fixes a bunch of xHCI driver issues to make it > work on Intel's platform. > > Issues identified in the U-Boot xHCI driver are really spec violations, > but apparently other xHCI IPs found on ARM SoCs (mainly Synopsis IP?) > are quite tolerant with these spec violations, or IOW those IPs don't > respect the xHCI spec. While it comes to Intel platform, it just breaks. > > Note xHCI interrupt transfer is still not supported in this series, as > it has been there since the original commit of xHCI support for years. > > Tested on Intel MinnowMax board with the following USB devices: > - Dell USB 1.1 keyboard > - Dell USB 2.0 mouse > - Netac USB 2.0 flash disk > - JetFlash USB 3.0 flash disk > - GenesysLogic 4-port USB 3.0 hub, with an integrated Realtek USB > ethernet chipset connected to one of its downstream port > > Testing were performed on both ports (2.0 port and 3.0 port), and both > ports are connected to xHCI (configure MinnowMax to enable xHCI). > > Testing results: > - DELL USB 1.1 keyboard and 2.0 mouse can be enumerated on both ports > - USB 2.0 and 3.0 flash disks work fine (enumerated, read/write) on > both ports > - GenesysLogic USB 3.0 hub can be enumerated on 2.0 port as a 2.0 > hub, and the integrated Realtek USB ethernet chipset enumerated as > well. USB 2.0 and 3.0 flash disks connected via the hub can be > enumerated, but DELL USB 1.1 keyboard and 2.0 mouse cannot. > - GenesysLogic USB 3.0 hub can be enumerated on 3.0 port as a 3.0 hub, > but the integrated Realtek USB ethernet chipset cannot be enumerated. > None of devices connected via the hub can be enumerated. U-Boot xHCI > driver just throws BUG_ON() on the event TRB handling. > > This indicates that USB 3.0 hub support in U-Boot is seriously broken. > So far this series tries to fix some of the issues identified, but the > USB 3.0 hub is still not working. This will be left as future work. > > The USB 3.0 hub work includes: port status translation, USB 3.0 newly > added "Set Hub Depth" request support, xHCI codes update to fill in > hub description fields in the input slot context when issuing commands > to xHC, etc. > > This series is available at u-boot-x86/xhci-working for testing. > > Changes in v2: > - Change to use uint and also 'normal' variable name packet_size. > - Update description to use "PCI-based" > - Remove CONFIG_USB_XHCI_PCI from config_whitelist.txt > - Drop two x86 patches that were already applied to u-boot-x86
Do you have any comments regarding to this first series for xHCI? If not, I will rebase my series and send out for you to apply soon. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
