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| author | Robby Cai <R63905@freescale.com> | 2010-12-09 19:13:33 +0800 |
|---|---|---|
| committer | Robby Cai <R63905@freescale.com> | 2010-12-09 20:39:55 +0800 |
| commit | 7fca1defb1348b7b5d1974c525981ed8efe77e51 (patch) | |
| tree | 6dd198a2351289dc0ab79e648cd5c98e7b78346f /doc/README.mpc837xemds | |
| parent | 35d3bb2e01fec26183360fe2018015e3977bd1c4 (diff) | |
| download | u-boot-imx-7fca1defb1348b7b5d1974c525981ed8efe77e51.zip u-boot-imx-7fca1defb1348b7b5d1974c525981ed8efe77e51.tar.gz u-boot-imx-7fca1defb1348b7b5d1974c525981ed8efe77e51.tar.bz2 | |
ENGR00136170 MX50 Add ZQ calibration revision for TO1.1
All type of DDRs will be affected.
ddr script is available here:
http://compass.freescale.net/livelink/livelink/open/218722501
Two key points:
1. LPDDR2 ZQ calibration is different from mDDR/DDR2,
fixed in this version(they're same before).
2. TO1.1 ZQ calibration is _NOT_ compatible with TO1.0.
U-Boot default config is for TO1.1.
Please switch off CONFIG_ZQ_CALIB option if compile for TO1.0.
Other fixes:
1. Change drive strength to 0x00200000 for all ddr types.
2. Add missed config for IOMUXC_SW_PAD_CTL_PAD_DRAM_OPEN and
IOMUXC_SW_PAD_CTL_PAD_DRAM_OPENFB.
Signed-off-by: Robby Cai <R63905@freescale.com>
Diffstat (limited to 'doc/README.mpc837xemds')
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