On Tue, Jun 09, 2009 at 09:48:22AM +0200, Valentin Longchamp wrote: >> Does anyone currently work on bringing the EHCI to life on MX3s? >> Especially the glue layer to external transceivers/PHYs seems to need >> some work. Is there any generic framework to use to control chips like >> the ISP1504? > > I have started to do something about this (however I don't really have > time to do this 100% these days). Sascha had posted a patch series that > already works, but at least needs some cleanup work. Ah. Can you point me to some sources? I've been looking around and couldn't find anything, except for some hackish Freescale BSP code. So I started to do it myself, but maybe Sascha got further already than I did? > About the ISP1504, I have found no generic layer about them in the > kernel. Sascha had an initial support in its patches. If I have > understood correctly how the i.MX31 Host USB controller works, you only > need to issue a few configuration commands through the ULPI bus to the > transceiver a platform initialization time, afterwards the ULPI > read/writes for "transfer" commands are generated by the controller > hardware (if someone could confirm this, it would great). So if my > previous assumption is correct, the ULPI glue layer does not need to be > very complicated. Not complicated, no. But it should be generic enough to be reused for other, similar chips. Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
