serial: sh-sci: Add DMA support.

Support using DMA for sending and receiving data over SCI(F) interfaces of
various SH SoCs.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 888a0ce91c4b..11ebe862457b 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1009,6 +1009,10 @@ config SERIAL_SH_SCI_CONSOLE
         depends on SERIAL_SH_SCI=y
         select SERIAL_CORE_CONSOLE
 
+config SERIAL_SH_SCI_DMA
+        bool "DMA support"
+        depends on SERIAL_SH_SCI && SH_DMAE && EXPERIMENTAL
+
 config SERIAL_PNX8XXX
         bool "Enable PNX8XXX SoCs' UART Support"
         depends on MIPS && (SOC_PNX8550 || SOC_PNX833X)