Huang Shijie 8418e67d95 serial: mxs: enable the DMA only when the RTS/CTS is valid ... The original DMA support works only when RTS/CTS is enabled. (see the "e800163 serial: mxs-auart: add the DMA support for mx28") But after several patches, DMA support has lost this limit. (see the "bcc20f9 serial: mxs-auart: move to use generic DMA helper") So an UART without the RTS/CTS lines may also enables the DMA support, in which case the UART may gets unpredictable results. This patch adds an optional property for the UART DT node which indicates the UART has RTS and CTS lines, and it also means you enable the DMA support for this UART. This patch also adds a macro MXS_AUART_RTSCTS, and uses it to check RTS/CTS before we enable the DMA for the UART. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Huang Shijie <shijie8@gmail.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-08-05 15:05:17 +08:00
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bindings	serial: mxs: enable the DMA only when the RTS/CTS is valid	2013-08-05 15:05:17 +08:00
00-INDEX
booting-without-of.txt	sun.com documentation fixes	2013-02-21 17:22:20 -08:00
usage-model.txt	doc: device tree: clarify stuff in usage-model.txt.	2013-06-18 13:46:27 +02:00