Well sleuthed! 2008/12/3 Chris Jones > I've just been playing with an application which needed the 48MHz clock > output from the PXA270. We've allocated the pin for it but nothing was > coming out. A bit of trial and error (the Intel documentation was no > help at all) revealed that it is shared with the USB device clock, and > thus has to be enabled in the CKEN register. > > I've modded bootldr (in the branches/bootldr32-pxa-sa1100 branch) so > that it enables this by default. This should be of benefit to many > applications which want to use the FPGA. It shouldn't break anything > else, but I'm prepared to be proven wrong. > > I also noticed that the Balloon-specific GPIO Alternate Function > register settings were #ifdef'ed by a CONFIG_MACH_H5400, which made no > sense at all to me, and may even have meant that bootldr wasn't taking > any notice of them (there is another set of bare hex numbers of unknown > provenance in the relevant #else clause). They're already encased in a > #ifdef CONFIG_MACH_BALLOON, so I removed the #ifdef CONFIG_MACH_H5400. > The values we spent so long carefully defining in balloon3-init.h are > thus absolutely, definitely the ones getting used now, which can only be > a good thing. Probably. > > Chris > -- > Chris Jones - chris@martin-jones.com > Martin-Jones Technology Ltd, makers of Solidlights > 148 Catharine Street, Cambridge, CB1 3AR, UK > Phone +44 (0) 1223 655611 Fax +44 (0) 870 112 3908 > http://www.solidlights.co.uk/ > > _______________________________________________ > Balloon mailing list > Balloon@balloonboard.org > http://balloonboard.org/mailman/listinfo/balloon > -- Toby Churchill 20 Panton Street CAMBRIDGE, CB2 1HP www.iendian.com www.toby-churchill.com www.churchillsupercars.com www.myspace.com/dgpcambridge