[U-Boot] [PATCH 1/2] x86: baytrail: Introduce a Kconfig option for the internal UART

[Bin Meng]

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 at gmail.com>
---

 arch/x86/cpu/baytrail/Kconfig | 11 +++++++++++
 configs/bayleybay_defconfig   |  1 +
 configs/minnowmax_defconfig   |  1 +
 3 files changed, 13 insertions(+)

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
diff --git a/configs/bayleybay_defconfig b/configs/bayleybay_defconfig
index 9f1d7fb..0a71bb8 100644
--- a/configs/bayleybay_defconfig
+++ b/configs/bayleybay_defconfig
@@ -2,6 +2,7 @@ CONFIG_X86=y
 CONFIG_VENDOR_INTEL=y
 CONFIG_DEFAULT_DEVICE_TREE="bayleybay"
 CONFIG_TARGET_BAYLEYBAY=y
+CONFIG_INTERNAL_UART=y
 CONFIG_HAVE_INTEL_ME=y
 CONFIG_ENABLE_MRC_CACHE=y
 CONFIG_SMP=y
diff --git a/configs/minnowmax_defconfig b/configs/minnowmax_defconfig
index 28b837d..ba2b7dc 100644
--- a/configs/minnowmax_defconfig
+++ b/configs/minnowmax_defconfig
@@ -2,6 +2,7 @@ CONFIG_X86=y
 CONFIG_VENDOR_INTEL=y
 CONFIG_DEFAULT_DEVICE_TREE="minnowmax"
 CONFIG_TARGET_MINNOWMAX=y
+CONFIG_INTERNAL_UART=y
 CONFIG_HAVE_INTEL_ME=y
 CONFIG_ENABLE_MRC_CACHE=y
 CONFIG_SMP=y
-- 
2.7.4