On Tue, Mar 26, 2019 at 10:13 AM Sugaya Taichi <sugaya.taichi@xxxxxxxxxxxxx> wrote: > > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig > index 72966bc..961519b 100644 > --- a/drivers/tty/serial/Kconfig > +++ b/drivers/tty/serial/Kconfig > @@ -1582,6 +1582,32 @@ config SERIAL_RDA_CONSOLE > Say 'Y' here if you wish to use the RDA8810PL UART as the system > console. Only earlycon is implemented currently. > > +config SERIAL_MILBEAUT_USIO > + tristate "Milbeaut USIO/UART serial port support" > + depends on ARCH_MILBEAUT > + default y > + select SERIAL_CORE > + help > + This selects the USIO/UART IP found in Socionext Milbeaut SoCs. In general, it would be good to make it possible to build this on other architectures for better compile test coverage, e.g. like config SERIAL_MILBEAUT_USIO tristate "Milbeaut USIO/UART serial port support" depends on ARCH_MILBEAUT || COMPILE_TEST default ARCH_MILBEAUT You might need additional dependencies like 'depends on OF' to make this work reliably. Arnd