[U-Boot] [PATCH v2 0/6] usb:samsung: Exynos4 SoC USB code improvements

Marek Vasut marex at denx.de
Thu Feb 6 02:24:03 CET 2014


On Wednesday, February 05, 2014 at 10:10:40 AM, Lukasz Majewski wrote:
> This patch series comprises several improvements for Exynos4 USB code.
> 
> The most notable is transmission speed improvement (measured on Trats):
> From 9.51 MiB/s up to 27 MiB/s
> 
> This is due to UDC driver optimizations.
> 
> Also a code cleanup for THOR gadget has been included.
> 
> Lukasz Majewski (6):
>   usb:gadget:ums: Replace malloc calls with memalign to fix cache
>     buffer alignment
>   usb:udc:samsung: Remove redundant cache operation from Samsung UDC
>     driver
>   usb:udc:samsung: Allow burst transfers for non EP0 endpints
>   usb:udc:samsung: Zero copy approach for data passed to Samsung's UDC
>     driver
>   usb:gadget:f_thor: Allocate request up to THOR_PACKET_SIZE not
>     ep->maxpacket
>   usb:gadget:f_thor: cosmetic: Remove debug memset
> 
>  drivers/usb/gadget/f_mass_storage.c       |    4 +-
>  drivers/usb/gadget/f_thor.c               |    4 +-
>  drivers/usb/gadget/s3c_udc_otg.c          |   19 +++----
>  drivers/usb/gadget/s3c_udc_otg_xfer_dma.c |   87
> ++++++++++++----------------- include/usb/s3c_udc.h                     | 
>   5 +-
>  5 files changed, 49 insertions(+), 70 deletions(-)

Applied all, but I'd like to know about the memalign() calls' precise alignment 
behavior -- that is, if the begining if cacheline aligned or if it's only the 
size or what -- see my rant /wrt patch #1 .

Best regards,
Marek Vasut


More information about the U-Boot mailing list