Enable DM_SERIAL for this board. For this to work, we first need to make DM_SERIAL work on LS1028A SoCs, which just means we have to properly call spl_early_init(). After this, clean up the board config by moving the CONFIG_DM_* macros to Kconfig. Now we can switch to DM_SERIAL. As the last patch, provide a configuration option to switch the output to the first serial line on this board, which is not possible because we can enable LPUART support (which needs DM_SERIAL).
Please note, the first patch is not really required but helps a lot in debugging early startup on Layerscape SoCs.
Michael Walle (5): armv8: fsl-layerscape: spl: add debug UART support armv8: fsl-layerscape: spl: call spl_early_init() board: sl28: move DM_* configs to Kconfig board: sl28: enable DM_SERIAL board: sl28: add config to enable console output on SER0
arch/arm/Kconfig | 20 +++++++++++++++++++ arch/arm/cpu/armv8/fsl-layerscape/spl.c | 11 ++++++++++ .../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 ++++++++++ configs/kontron_sl28_defconfig | 17 ---------------- include/configs/kontron_sl28.h | 2 -- 8 files changed, 65 insertions(+), 20 deletions(-) create mode 100644 board/kontron/sl28/common.c