On Fri, 30 Nov 2007 13:30:18 +0100 Laurent Pinchart wrote: > On Friday 30 November 2007 12:16, Vitaly Bordug wrote: > > On Fri, 30 Nov 2007 11:45:49 +0100 > > > > Laurent Pinchart wrote: > > > Hi everybody, > > > > > > Linux USB host support for the CPM, CPM2 and CPM2 pro is far from > > > complete. Many people showed interest on this list (and on > > > linuxppc-embedded) in the past, but nobody managed to complete a > > > driver and get it merged. > > > > that is mainly because of its semi-software nature. However, any > > approach would be helpful I beleive. > > The CPM/CPM2 USB host controller does indeed put some pressure on the > CPU. The PowerQuick III family is much better in that respect as its > USB host controller is EHCI compliant. > > We plan to use an external USB host controller when we will redesign > the hardware. My goal in writting a CPM2 USB host driver is mainly to > enable the hardware team to perform EMC testing on the USB interface. > I don't expect it to be shipped to any client, but I'd still like to > get it merged (if I complete the project) as I don't like throwing > away useful code. > > > > As I need USB host support on my MPC8248 (CPM2), I decided to > > > scratch the itch and try to get a working driver that could be > > > merged upstream. This mail describes my plans to make sure the > > > code I write will be useful for other people. > > > > > > The driver will be based on the cpm2usb project > > > (http://cpm2usb.sf.net/). As I don't own any CPM1-based platform, > > > I will convert the driver to use the CPM2 transaction-level > > > interface, thus making it incompatible with the CPM1. CPM1 > > > support could be added back later. There is no planned release > > > date, and more urgent projects could put this development on hold. > > > > > > Comments are welcome (and contributions too, especially in the > > > form of a working driver :-)). > > > > I may have some WIP material left, will try to dig it out... > > Should I wait ? >
Dunno. It was about 3 years ago so the chance is small. -- Sincerely, Vitaly _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
