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| author | York Sun <yorksun@freescale.com> | 2011-06-07 09:42:16 +0800 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-07-11 13:24:20 -0500 |
| commit | 1b3e3c4f263ff20b95c3514eefbde47e950c39e0 (patch) | |
| tree | 4043fc4d718f49dee1a2d88daa1b9ef87b435980 /README | |
| parent | aeb6716a12c68644d6dc1e798b724086c3cfcd24 (diff) | |
| download | u-boot-imx-1b3e3c4f263ff20b95c3514eefbde47e950c39e0.zip u-boot-imx-1b3e3c4f263ff20b95c3514eefbde47e950c39e0.tar.gz u-boot-imx-1b3e3c4f263ff20b95c3514eefbde47e950c39e0.tar.bz2 | |
powerpc/mpc8xxx: Enable calculation for fixed DDR chips
We used to have fixed parameters for soldered DDR chips. This patch
introduces CONFIG_SYS_DDR_RAW_TIMING to enable calculation based on timing
data from DDR chip datasheet, implemneted in board-specific files or header
files.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -2948,6 +2948,12 @@ Low Level (hardware related) configuration options: one, specify here. Note that the value must resolve to something your driver can deal with. +- CONFIG_SYS_DDR_RAW_TIMING + Get DDR timing information from other than SPD. Common with + soldered DDR chips onboard without SPD. DDR raw timing + parameters are extracted from datasheet and hard-coded into + header files or board specific files. + - CONFIG_SYS_83XX_DDR_USES_CS0 Only for 83xx systems. If specified, then DDR should be configured using CS0 and CS1 instead of CS2 and CS3. |