The env variable "SN" is used to store the serial number on DH electronics
SoMs. New SoMs will use the variable "dh_som_serial_number". To ensure
compatibility, these env variables are synchronized. This is achieved
using callback functions.
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Deduplicate defconfigs for all DH i.MX8MP DHSOM by factoring out the
common parts into generic _dhsom_defconfig and including those using
the #include <configs/...> preprocessor macro, which is applicable to
defconfigs as well. This enables CMD_EXPORTENV on all iMX8MP DHSOM
systems to be consistent with other DHSOM systems.
Signed-off-by: Marek Vasut <marex@denx.de>