karo: tx6: lowlevel_init: various fixes for DDR calibration
authorLothar Waßmann <LW@KARO-electronics.de>
Fri, 25 Apr 2014 11:41:08 +0000 (13:41 +0200)
committerLothar Waßmann <LW@KARO-electronics.de>
Fri, 25 Apr 2014 11:41:08 +0000 (13:41 +0200)
commit387eb10d04cdc406f596a74e214924718ed82a74
treea11b269cddb12c4eddc81c240024a162f2ad0891
parent2152822a92b3afb1109e165b8d62da4a7f16ec49
karo: tx6: lowlevel_init: various fixes for DDR calibration

- remove useless comments
- issue manual refresh cycle after disabling automatic refresh
- don't enable periodic ZQ calibration until after calibration is done
- remove redundant writes to MDMISC
- issue MRS commands to select MPR for both banks in case of multiple
  SDRAM banks used
- combine check commands for completion and error bits
board/karo/tx6/lowlevel_init.S