On most Renesas ARM platforms, the SCIF serial ports can be used with
DMA, so most users will want DMA support to be enabled.
On SuperH platforms, SCI(F) serial ports cannot be used with DMA yet
(see also commit
219fb0c1436e4893 ("serial: sh-sci: Remove the platform
data dma slave rx/tx channel IDs")), so users will want it disabled to
reduce kernel size.
Hence follow the above rationale to configure the default, unless
CONFIG_EXPERT is enabled.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
default ARCH_RENESAS || H8300
config SERIAL_SH_SCI_DMA
- bool "DMA support"
+ bool "DMA support" if EXPERT
depends on SERIAL_SH_SCI && DMA_ENGINE
+ default ARCH_RENESAS
config SERIAL_PNX8XXX
bool "Enable PNX8XXX SoCs' UART Support"