[PATCH] arm: mach-imx: enable all uart clocks for DEBUG_LL

Shawn Guo shawn.guo at freescale.com
Tue Aug 30 11:27:26 EDT 2011


On Tue, Aug 30, 2011 at 10:56:07PM +0800, Shawn Guo wrote:
> On Thu, Aug 25, 2011 at 12:57:36PM +0200, Wolfram Sang wrote:
> > If you want to move the DEBUG_LL uart, simply changing the base address
> > in debug-macro.S will not be enough. One needs to enable the correct
> > clock during clock init, too, otherwise the kernel remains silent. This
> > is too easy to forget, so enable all uart clocks for DEBUG_LL to save
> > precious developer time.
> > 
> I guess the patch is not welcomed from the power management POV.
> Shouldn't bootloader have enabled the clock for debug uart anyway?
> 
Hmm, bootloader should be the only one who can enable the clock for
DEBUG_LL uart, as DEBUG_LL could be used at the very early point of
kernel booting.

-- 
Regards,
Shawn




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