"Subrahmanya, Chaithrika" <chaithr...@ti.com> writes: >> -----Original Message----- >> From: davinci-linux-open-source-boun...@linux.davincidsp.com >> [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com] On Behalf >> Of Subrahmanya, Chaithrika >> Sent: Monday, January 12, 2009 5:14 PM >> To: Kevin Hilman; davinci-linux-open-source@linux.davincidsp.com >> Subject: RE: davinci git updated to v2.6.28 >> >> > -----Original Message----- >> > From: davinci-linux-open-source- >> > bounces+sudhakar.raj=ti....@linux.davincidsp.com [mailto:davinci-linux- >> > open-source-bounces+sudhakar.raj=ti....@linux.davincidsp.com] On Behalf >> Of >> > Kevin Hilman >> > Sent: Saturday, January 10, 2009 1:28 PM >> > To: davinci-linux-open-source@linux.davincidsp.com >> > Subject: Re: davinci git updated to v2.6.28 >> > >> > Kevin Hilman <khil...@deeprootsystems.com> writes: >> > >> > > DaVinci git has been sync'd with the upstream (omap) tree at >> > > v2.6.28. Boot tested a single kernel (davinci_all_defconfig) on >> > > dm6446, dm355 and dm6467. >> > >> > FYI... >> > >> > I boot tested on dm6467, but I just now noticed that when using >> > CONFIG_DEBUG_LL on dm6467 I'm back to getting garbage out the serial >> > port. dm355 and dm6446 work fine with CONFIG_DEBUG_LL. >> > >> > I haven't yet debugged this further. >> >> This is due to the byte access of UART through the macros in >> arch/arm/include/asm/hardware/debug-8250.S file. On changing the >> instructions to >> 'ldr' and 'str' from 'ldrb' and 'strb' respectively, the debug messages >> are output. >> > > 'DM646x requires 32-bit access to UART unlike other DaVinci SoCs'. > The changes made to arch/arm/include/asm/hardware/debug-8250.S file > was just to test and a better way to override this behavior is still > being looked into.
My thoughts... I think we are going to need a way to create 'stub' assembly functions that are overwritten at runtime with the device specific ones. We will need this this low-level debug UART code but also for the interrupt entry macro with the addition of the CPINTC of the omapl1x. Kevin _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
