tree 7a06a332a20fa7e50a2452080c78acfc6f9a0fba
parent c525bb42aabd1c52c758b64758a9d5fc12e52d01
author YouMin Chen <cym@rock-chips.com> 1573787083 +0800
committer Kever Yang <kever.yang@rock-chips.com> 1573979036 +0800

ram: px30: add sdram driver

Add the sdram driver for PX30 to support ddr3, ddr4, lpddr2 and lpddr3.

For TPL_BUILD, the driver implement full dram init and without DM
support due to the limit of internal SRAM size.
For SPL and U-Boot proper, it's a simple driver with dm for get
dram_info like other SoCs.

Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>