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| author | Adrian Alonso <adrian.alonso@nxp.com> | 2016-10-31 13:57:54 -0500 |
|---|---|---|
| committer | Adrian Alonso <adrian.alonso@nxp.com> | 2016-10-31 14:18:30 -0500 |
| commit | 03cc626df73d6c2bb36daf280b1cd43170c298a0 (patch) | |
| tree | 67584291462769ed9275ea4b691307889a0e1c11 | |
| parent | 8d2e9cb7996cde1cee979d56b38c41ec84629416 (diff) | |
| download | u-boot-imx-03cc626df73d6c2bb36daf280b1cd43170c298a0.zip u-boot-imx-03cc626df73d6c2bb36daf280b1cd43170c298a0.tar.gz u-boot-imx-03cc626df73d6c2bb36daf280b1cd43170c298a0.tar.bz2 | |
MLK-13407: mx6qarm2: mt128x64mx3 2: add init pre charge all command
- Adjust ZQ delay for MMDC clock frequency at 400MHz
- Precharge all commands per JEDEC
The memory controller may optionally issue a Precharge-All command
prior to the MRW Reset command, this is strongly recommended to ensure
a robust DRAM initialization
DDR Calibration script:
http://sw-stash.freescale.net/projects/IMX/repos/ddr-scripts-rel/commits/a72e010a1fd8c7fe0fda7bdc4d058c478e94c3da
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
| -rw-r--r-- | board/freescale/mx6qarm2/mt128x64mx32.cfg | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/board/freescale/mx6qarm2/mt128x64mx32.cfg b/board/freescale/mx6qarm2/mt128x64mx32.cfg index 0f9940d..3433fd3 100644 --- a/board/freescale/mx6qarm2/mt128x64mx32.cfg +++ b/board/freescale/mx6qarm2/mt128x64mx32.cfg @@ -134,9 +134,9 @@ DATA 4 0x020e05c4 0x00000030 // IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM7 // MMDC0_MDSCR, set the Configuration request bit during MMDC set up DATA 4 0x021b001c 0x00008000 // Chan 0 DATA 4 0x021b401c 0x00008000 // Chan 1 - -DATA 4 0x021b085c 0x1b5f0109 //LPDDR2 ZQ params -DATA 4 0x021b485c 0x1b5f0109 //LPDDR2 ZQ params +// Adjust ZQ delay for MMDC clock frequency at 400MHz +DATA 4 0x021b085c 0x1b4700c7 //LPDDR2 ZQ params +DATA 4 0x021b485c 0x1b4700c7 //LPDDR2 ZQ params //============================================================================= // Calibration setup. @@ -228,6 +228,13 @@ DATA 4 0x021b4040 0x00000017 // Chan1 CS0_END // DATA 4 0x021b4400 0x11420000 //MMDC0_MAARCR ADOPT optimized priorities. Dyn jump disabled DATA 4 0x021b4000 0x83110000 // MMDC1_MDCTL +// Precharge all commands per JEDEC +// The memory controller may optionally issue a Precharge-All command +// prior to the MRW Reset command. +// This is strongly recommended to ensure a robust DRAM initialization +DATA 4 0x021b001c 0x00008010 // precharge-all commnad CS0 - Chan 0 +DATA 4 0x021b401c 0x00008010 // precharge-all commnad CS0 - Chan 1 + //============================================================================= // LPDDR2 Mode Register Writes //============================================================================= |