x86: baytrail: Introduce a Kconfig option for the internal UART
There are quite a number of BayTrail boards that uses an external
SuperIO chipset to provide the legacy UART. For such cases, it's
better to have a Kconfig option to enable the internal UART.
So far BayleyBay and MinnowMax boards are using internal UART as
the U-Boot console, enable this on these two boards.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/baytrail/Kconfig b/arch/x86/cpu/baytrail/Kconfig
index 407feb2..1c8ac37 100644
--- a/arch/x86/cpu/baytrail/Kconfig
+++ b/arch/x86/cpu/baytrail/Kconfig
@@ -7,3 +7,14 @@
config INTEL_BAYTRAIL
bool
select HAVE_FSP if !EFI
+
+if INTEL_BAYTRAIL
+config INTERNAL_UART
+ bool "Enable the SoC integrated legacy UART"
+ help
+ There is a legacy UART integrated into the Bay Trail SoC.
+ A maximum baud rate of 115200 bps is supported. For this
+ reason, it is recommended that the UART port be used for
+ debug purposes only, eg: U-Boot console.
+
+endif