From 1b3e3c4f263ff20b95c3514eefbde47e950c39e0 Mon Sep 17 00:00:00 2001 From: York Sun Date: Tue, 7 Jun 2011 09:42:16 +0800 Subject: 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 Signed-off-by: Kumar Gala --- README | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'README') diff --git a/README b/README index 2da0f96..1e2d4d3 100644 --- a/README +++ b/README @@ -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. -- cgit v1.1