[U-Boot] [PATCH 0/4] USB multi controller

[Marek Vasut]

Dear Lucas Stach,

> Hi Stephen,
> 
> Am Dienstag, den 04.09.2012, 17:05 -0600 schrieb Stephen Warren:
> > On 08/30/2012 10:03 AM, Lucas Stach wrote:
> > > Hi all,
> > > 
> > > this is a follow up on the patch "USB: EHCI: Initialize multiple
> > > USB controllers at once" from Jim Lin. It takes some of the
> > > code but has undergone some heavy reworking.
> > > 
> > > When we remove the ifdef horror from the above mentioned patch it's
> > > mostly a big interface change to the usb subsystem. As this creates
> > > a lot of churn I've split this up into a series. Every patch is self
> > > contained so it doesn't break compiles and *should* not regress
> > > any functionality on it's own. At least the series is bisectable in
> > > case anything goes wrong. I've compile tested all the ARM configs.
> > > 
> > > Both the lowlevel usb and ehci interface change are backward
> > > compatible, so implementations that only use one controller can
> > > choose to ignore the new interface. All implementations are
> > > updated to work with the new function prototypes.
> > > 
> > > For Tegra I've included a patch to actually use the new ehci
> > > interface. Patches are based on a Tegra tree with some relevant
> > > changes from u-boot-usb picked over, so they should apply to
> > > u-boot-usb/master.
> > 
> > Can you explain what this series is based on in a little more detail? I
> > tried applying it to Tegra's for-next today, and it wouldn't apply. I
> > managed to apply using plain "patch" rather then "git am", but then I
> > get a bunch of compile errors:-(
> 
> At the time I wrote those patches the u-boot-usb and u-boot-tegra trees
> didn't merge cleanly and I wasted quite some time trying to fix up the
> failed merge. In the end I ended up just picking the following over to
> my tegra tree, which should be enough to avoid any conflicts with the
> usb tree:
> 
> cdeb916120a4 ehci: cosmetic: Define the number of qt_buffers
> 44ae0be7461f ehci: Fail for multi-transaction interrupt transfers
> 14eb79b7a086 ehci: cosmetic: Define used constants
> 5cec214ecd7d ehci-hcd: Boost transfer speed
> cffcc5035809 usb_storage: Restore non-EHCI support
> 4bee5c83ea46 usb_storage: Remove EHCI constraints
> 3e8581bb9589 usb_stor_BBB_transport: Do not delay when not required
> db19134615dd ehci: Optimize qTD allocations

u-boot-usb master is updated to master and pushed for your enjoyment.

> HTH,
> Lucas

Best regards,
Marek Vasut