tree e07ed5a7e92ccf303a814390557360bcc1fc926e
parent 3e2379418122555779e771e9289e744476974f9c
author Ye Li <ye.li@nxp.com> 1628323271 +0800
committer Stefano Babic <sbabic@denx.de> 1628513211 +0200

ddr: Add DDR driver for iMX8ULP

Add iMX8ULP DDR initialization driver which loads the DDR timing
parameters and executes the training procedure.

When enabling IMX8ULP_DRAM_PHY_PLL_BYPASS, using PHY PLL bypass mode
to do DDR init

Signed-off-by: Ye Li <ye.li@nxp.com>