[U-Boot] [Patch v2 1/2] powerpc/mpc8xxx: Enable calculation for fixed DDR chips
York Sun
yorksun at freescale.com
Wed Jun 8 00:49:22 CEST 2011
On Tue, 2011-06-07 at 08:35 -0500, Kumar Gala wrote:
> > +- 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.
> > +
>
> How is this not just !CONFIG_SPD ?
There are boards with fixed DDR in the past. They didn't use SPD.
> > +/* board specific function */
> > +#ifdef CONFIG_SYS_DDR_RAW_TIMING
> > +int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
> > + unsigned int controller_number,
> > + unsigned int dimm_number);
>
> where is this code?
This code is in board ddr.c file. It is board specific.
York
More information about the U-Boot
mailing list