From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> Sent: Monday, June 29, 2020 12:00 AM > On Sat, Jun 27, 2020 at 04:23:15PM +0200, Greg KH wrote: > > On Fri, Jun 05, 2020 at 04:43:21PM +0800, Fugang Duan wrote: > > > GKI kernel requires drivers built as modules including console > > > driver, so add the support that imx serial console driver can be > > > built as module. > > > > > > The changes of the patch: > > > - imx console driver can be built as module. > > > - move out earlycon code to separated driver like imx_earlycon.c, > > > and imx earlycon driver only support build-in. > > > > > > Signed-off-by: Fugang Duan <fugang.duan@xxxxxxx> > > > --- > > > drivers/tty/serial/Kconfig | 17 +++++++---- > > > drivers/tty/serial/Makefile | 1 + > > > drivers/tty/serial/imx.c | 37 ++--------------------- > > > drivers/tty/serial/imx_earlycon.c | 50 > > > +++++++++++++++++++++++++++++++ > > > 4 files changed, 65 insertions(+), 40 deletions(-) > > > > > > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig > > > index adf9e80e7dc9..890cbf214561 100644 > > > --- a/drivers/tty/serial/Kconfig > > > +++ b/drivers/tty/serial/Kconfig > > > @@ -502,20 +502,27 @@ config SERIAL_IMX > > > can enable its onboard serial port by enabling this option. > > > > > > config SERIAL_IMX_CONSOLE > > > - bool "Console on IMX serial port" > > > - depends on SERIAL_IMX=y > > > + tristate "Console on IMX serial port" > > > + depends on SERIAL_IMX > > > select SERIAL_CORE_CONSOLE > > > - select SERIAL_EARLYCON if OF > > > help > > > If you have enabled the serial port on the Freescale IMX > > > - CPU you can make it the console by answering Y to this option. > > > + CPU you can make it the console by answering Y/M to this option. > > > > > > - Even if you say Y here, the currently visible virtual console > > > + Even if you say Y/M here, the currently visible virtual console > > > (/dev/tty0) will still be used as the system console by default, but > > > you can alter that using a kernel command line option such as > > > "console=ttymxc0". (Try "man bootparam" or see the > documentation of > > > your bootloader about how to pass options to the kernel at boot > > > time.) > > > > > > +config SERIAL_IMX_EARLYCON > > > + bool "Earlycon on IMX serial port" > > > + depends OF > > > + select SERIAL_EARLYCON if OF > > Given that SERIAL_IMX_EARLYCON depends on OF, the select can be > unconditional. Got it, select SERIAL_EARLYCON is unconditional, will update it in v2. Thanks.
