Messages in this thread | | | Subject | Re: [PATCH 2/3] msm: add minimal board file for HTC Dream device | From | Robert Jarzmik <> | Date | Mon, 16 Nov 2009 19:56:52 +0100 |
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Russell King - ARM Linux <linux@arm.linux.org.uk> writes:
> On Mon, Nov 16, 2009 at 08:43:20AM -0800, Brian Swetland wrote: >> What's the best way to handle a situation where there is no valid >> debug uart? Could the arch/platform require DEBUG_LL be unset via >> Kconfig directives if it is configured in a way where there is no >> valid debug uart? > > You're the first to have that issue. Everyone else has a UART they > can always direct stuff at.
Just for the record, there are machine files without a debug UART, especially in the smartphone area.
In the PXA subworld I know, the UARTs are often used for : - a GSM chip (pxa ffuart) - a Bluetooth chip (pxa btuart) - a GPS chip (pxa stuart / hwuart) - an IR chip (pxa stuart / hwuart)
I didn't check through the mach-pxa/*.c, but mioa701.c accounts for one, and I think magician and hx4700 would be part of it too. That also means kernel debugging is _really_ painfull for these platforms.
Cheers.
-- Robert
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