Hi,
We now have a separate driver model tree at http://git.denx.de/u-boot-dm.git. This will be used to stage driver model patches. There is of course some overlap between these and architecture-specific and subsystem patches so it is not completely clear-cut whether patches will go through dm, arm, usb, etc. This will be worked out as time passes.
I will follow the workflow at http://www.denx.de/wiki/U-Boot/CustodianGitTrees
In particular there may be a 'testing' branch from time to time with the latest state of patches posted to the mailing list.
My initial focus is to enable GPIO and serial uclasses, and encourage others to contribute patches to convert drivers over to this ready for the next release. My approach will be incremental so I am particularly interested in patches which advance particular boards, rather than glorious new frameworks that may be pressed into service in the indefinite future. All new uclasses should include comprehensive test cases - you should be able to follow the examples pretty easily.
Also please note that my availability is highly variable so I cannot promise any particular response delay at present (sorry). Should this become a problem we can appoint another maintainer!
You can use the 'dm:' prefix for driver model patches - please also add other tags as appropriate - e.g. 'dm: exynos:' or 'dm: net'. Thanks in advance for contributions.
Regards, Simon