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

Browse source

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>

...

This commit is contained in:

Huang Shijie 2012-11-16 16:03:53 +08:00 • committed by Greg Kroah-Hartman

parent f4b1f03b82

commit e800163281

2 changed files with 325 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt

View file

322

drivers/tty/serial/mxs-auart.c

View file