There are some reports of stability issues at 672 MHz, see:
http://linux-sunxi.org/Orange_Pi_PC#DRAM_clock_speed_limit
So reduce the DRAM speed to 624MHz which seems to be reliable everywhere.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
There are already Kconfig options for SPI drivers, but we
have not moved them from config.h to defconfig files. This
commit does this in a batch.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>