[PATCH v4 0/3] serial: fsl_lpuart: add DMA support

Shawn Guo shawn.guo at linaro.org
Mon Feb 10 21:59:34 EST 2014


On Tue, Feb 11, 2014 at 01:50:14AM +0000, Yao Yuan wrote:
> Hi, Shawn
> 
> Here I just want the DMA be a selectable property for each board. 
> Is it suitable?

No, it's not.  Just like IRQ line, DMA channel is a SoC level resource.
It should just be there once the SoC is out there.  Nothing to do with
board level configuration.

Shawn

> 
> > -----Original Message-----
> > From: Shawn Guo [mailto:shawn.guo at linaro.org]
> > Sent: Monday, January 27, 2014 3:50 PM
> > To: Yuan Yao-B46683
> > Cc: gregkh at linuxfoundation.org; linux at arm.linux.org.uk; arnd at arndb.de;
> > mark.rutland at arm.com; linux-arm-kernel at lists.infradead.org; linux-
> > serial at vger.kernel.org
> > Subject: Re: [PATCH v4 0/3] serial: fsl_lpuart: add DMA support
> > 
> > On Wed, Jan 22, 2014 at 12:09:30PM +0800, Yuan Yao wrote:
> > > Changed in v4:
> > > - Move dma properties from dtsi to dts.
> > 
> > Why this change?  DMA is a SoC level resource rather than board one.
> > 
> > Shawn
> 




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