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

quoted

-----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:

quoted

Changed in v4:
- Move dma properties from dtsi to dts.

Why this change?  DMA is a SoC level resource rather than board one.

Shawn