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(parent: f4b1f03) | patch
serial: mxs-auart: add the DMA support for mx28
authorHuang Shijie <b32955@freescale.com>
Fri, 16 Nov 2012 08:03:53 +0000 (16:03 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 16 Nov 2012 12:42:46 +0000 (04:42 -0800)
commite8001632816e600ced7d9d4790930fd87935c654
tree129f9bfc890149e11ddcf163f0e6851e9db5791ftree | snapshot
parentf4b1f03b826ba22c9835e9e89a1ca03541313e04commit | diff
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>
Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt diff | blob | history
drivers/tty/serial/mxs-auart.c diff | blob | history
Domain: System / Kernel;