In a nutshell, this patchset allows to use Kconfig capabilities of the current u-boot code to reproduce the old Cubietruck demo, which showcased reclocking DRAM from 432MHz to 600MHz (the old 'highspeedtruck' branch): http://lists.denx.de/pipermail/u-boot/2014-July/183981.html
But now only a special customized Cubietruck defconfig is sufficient, and there is no need to patch the u-boot source code anymore.
Siarhei Siamashka (3): sunxi: dram: Optionally use standard JEDEC timings for sun[457]i sunxi: dram: Support more sun[457]i dram parameters in Kconfig sunxi: dram: Allow to configure vdd-dll voltage on sun[457]i
arch/arm/include/asm/arch-sunxi/dram.h | 1 + arch/arm/include/asm/arch-sunxi/dram_sun4i.h | 1 + board/sunxi/Kconfig | 83 +++++++++++ board/sunxi/board.c | 10 +- board/sunxi/dram_sun4i_auto.c | 20 ++- board/sunxi/dram_sun5i_auto.c | 20 ++- board/sunxi/dram_timings_sun4i.h | 205 +++++++++++++++++++++++++++ 7 files changed, 332 insertions(+), 8 deletions(-) create mode 100644 board/sunxi/dram_timings_sun4i.h