[U-Boot] [RFC PATCH 0/2] USB: XHCI: Add xHCI host controller stack driver
Marek Vasut
marex at denx.de
Tue Oct 23 13:20:45 CEST 2012
Dear Vivek Gautam,
> 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 ;-).
Sure, can you get me one such ARM hardware with xHCI? I'm sure you have a pile
of them so you can miss one. That's help greatly, thanks!
> 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
Best regards,
Marek Vasut
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