| commit | 71d42b3019389034e0eaebbc0a15dd0915a2a43d | [log] [tgz] |
|---|---|---|
| author | Lukasz Majewski <lukma@denx.de> | Wed Dec 05 17:04:02 2018 +0100 |
| committer | Stefano Babic <sbabic@denx.de> | Fri Feb 15 12:16:50 2019 +0100 |
| tree | c6734207c165bd38a469537247052df67c5c73fa | |
| parent | f3ff0b2b3633e635c9b7d017a77536e45ab5f0a6 [diff] |
ddr: vybrid: Provide code to perform on-boot calibration This patch provides the code to calibrate the DDR's DQS to DQ signals (RDLVL). It is based on: VFxxx Controller Reference Manual, Rev. 0, 10/2016, page 1600 10.1.6.16.4.1 "Software Read Leveling in MC Evaluation Mode" and NXP's community thread: "Vybrid: About DDR leveling feature on DDRMC." https://community.nxp.com/thread/395323 Signed-off-by: Lukasz Majewski <lukma@denx.de>