[PATCH 5/5] board: sl28: add config to enable console output on SER0

[Michael Walle]

Sometimes it is desireable to have the console output on the first
serial line. Introduce a configuration option for it (in the board
scope).

Signed-off-by: Michael Walle <michael at walle.cc>
---
 arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi | 12 ++++++++++++
 board/kontron/sl28/Kconfig                        | 10 ++++++++++
 board/kontron/sl28/Makefile                       |  2 +-
 board/kontron/sl28/common.c                       | 11 +++++++++++
 4 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 board/kontron/sl28/common.c

diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
index 240178ab4e..b3861ed98c 100644
--- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
+++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
@@ -133,6 +133,14 @@
 	};
 };
 
+#ifdef CONFIG_SL28_ENABLE_SER0_CONSOLE
+/ {
+	chosen {
+		stdout-path = "serial2:115200n8";
+	};
+};
+#endif
+
 #ifdef CONFIG_SL28_SPL_LOADS_ATF_BL31
 &binman {
 	fit {
@@ -250,6 +258,10 @@
 	u-boot,dm-pre-reloc;
 };
 
+&lpuart1 {
+	u-boot,dm-pre-reloc;
+};
+
 &serial0 {
 	u-boot,dm-pre-reloc;
 };
diff --git a/board/kontron/sl28/Kconfig b/board/kontron/sl28/Kconfig
index 4078ef186b..abcacc3185 100644
--- a/board/kontron/sl28/Kconfig
+++ b/board/kontron/sl28/Kconfig
@@ -48,4 +48,14 @@ config SL28_BL32_ENTRY_ADDR
 
 endif
 
+config SL28_ENABLE_SER0_CONSOLE
+	bool "Enable console output on SER0"
+	select DM_SERIAL
+	select SPL_DM_SERIAL
+	select FSL_LPUART
+	help
+	  By default the console output of this board is on the second serial
+	  line (SER1). Sometimes it is desirable to enable output on the first
+	  serial line (SER0). For example, if you have a carrier which only
+	  supports the first serial port.
 endif
diff --git a/board/kontron/sl28/Makefile b/board/kontron/sl28/Makefile
index 147ef9872b..5d220f0744 100644
--- a/board/kontron/sl28/Makefile
+++ b/board/kontron/sl28/Makefile
@@ -4,7 +4,7 @@ ifndef CONFIG_SPL_BUILD
 obj-y += sl28.o cmds.o
 endif
 
-obj-y += ddr.o
+obj-y += common.o ddr.o
 
 ifdef CONFIG_SPL_BUILD
 obj-y += spl.o
diff --git a/board/kontron/sl28/common.c b/board/kontron/sl28/common.c
new file mode 100644
index 0000000000..33c6843c3f
--- /dev/null
+++ b/board/kontron/sl28/common.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+u32 get_lpuart_clk(void)
+{
+	return gd->bus_clk / CONFIG_SYS_FSL_LPUART_CLK_DIV;
+}
-- 
2.20.1