[U-Boot] [U-Boot,v3,7/7] rockchip: rk3128: add sdram driver

[Philipp Tomsich]

> RK3128 support up to 2GB DDR3 sdram, one channel, 32bit data width.
> 
> This patch is only used for U-Boot, but not for SPL which will
> comes later, maybe after we merge all the common code into a common
> file.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
> Changes in v3: None
> Changes in v2: None
> 
>  drivers/ram/rockchip/Makefile       |  1 +
>  drivers/ram/rockchip/sdram_rk3128.c | 59 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 60 insertions(+)
>  create mode 100644 drivers/ram/rockchip/sdram_rk3128.c
> 

Applied to u-boot-rockchip, thanks!