This change adds necessary framework support for USB3.0 (Super-speed) and xHCI host controller stack layer. This stack will eventually interact with SOC specific USB 3.0 controllers.
Based on 'master' branch of u-boot tree.
Tested successfully with local patches on xHCI support for exynos5 with Kingston USB 2.0 data traveler (512 MB) and Corsair USB 3.0 flash voyager. However, also saw failures with Transcend USB 3.0 (8 GB) and a Jetflash 256 MB. We are further debugging and testing this thoroughly. In the meantime can this be reviewed please? This definitely needs further improvements ;-).
Although, code is based on linux's xHCI host controller driver, at certain points putting some delays seemed to make the device working (couldn't get proper explanation on delays in xHCI or USB 3.0 specifications :-(, any help in this regard will be very much appreciated).
Vivek Gautam (2): USB: SS: Add support for Super Speed USB interface USB: xHCI: Add stack support for xHCI
common/cmd_usb.c | 6 +- common/usb.c | 41 +- common/usb_hub.c | 26 +- common/usb_storage.c | 35 +- drivers/usb/host/xhci.c | 3330 ++++++++++++++++++++++++++++++++++++++++++++++ drivers/usb/host/xhci.h | 1360 +++++++++++++++++++ include/common.h | 2 + include/linux/usb/ch9.h | 2 +- include/usb.h | 15 +- include/usb_defs.h | 26 +- include/usbdescriptors.h | 201 +++ 11 files changed, 5012 insertions(+), 32 deletions(-) create mode 100644 drivers/usb/host/xhci.c create mode 100644 drivers/usb/host/xhci.h