Re: [Balloon] Minor bootldr change for Balloon 3

Well sleuthed!

2008/12/3 Chris Jones <chris@martin-jones.com>

> 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/
>
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