There is no support to initialize DRAM on RK3308 SoC using U-Boot TPL and therefore an external TPL binary must be used to generate a bootable u-boot-rockchip.bin image.

Imply ROCKCHIP_EXTERNAL_TPL by default for RK3308. Remove useless TPL_SERIAL for RK3308. Update documentation about build steps for RK3308. Add ROCK Pi S in the list of supported boards.

Massimo Pegorer (2): rockchip: Use an external TPL binary on RK3308 doc: rockchip: Update and complete info about RK3308

arch/arm/mach-rockchip/Kconfig | 2 +- doc/README.rockchip | 4 ++-- doc/board/rockchip/rockchip.rst | 10 ++++++++++ 3 files changed, 13 insertions(+), 3 deletions(-)