From: Huang Shijie <b32955@freescale.com>
Date: Fri, 16 Nov 2012 08:03:53 +0000 (+0800)
Subject: serial: mxs-auart: add the DMA support for mx28
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~83^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8001632816e600ced7d9d4790930fd87935c654;p=pandora-kernel.git

serial: mxs-auart: add the DMA support for mx28

Only we meet the following conditions, we can enable the DMA support for
auart:

  (1) We enable the DMA support in the dts file, such as
      arch/arm/boot/dts/imx28.dtsi.

  (2) We enable the hardware flow control.

  (3) We use the mx28, not the mx23. Due to hardware bug(see errata: 2836),
      we can not add the DMA support to mx23.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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