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drivers/ddr/fsl: Add calculation of register control words

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DDR4 RDIMM has some information in SPD to be used to calculate the
control words for register chip. The rest can be found from JEDEC
spec DDR4RCD02.

Signed-off-by: York Sun <york.sun@nxp.com>
This commit is contained in:
York Sun
2018-01-29 10:24:08 -08:00
parent c0c32af0b2
commit 564e9383e5
5 changed files with 54 additions and 11 deletions
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2
include/fsl_ddr_dimm_params.h
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@ -106,7 +106,7 @@ typedef struct dimm_params_s {
int tqhs_ps; /* byte 45, spd->tqhs */
#endif
/* DDR3 RDIMM */
/* DDR3 & DDR4 RDIMM */
unsigned char rcw[16]; /* Register Control Word 0-15 */
#ifdef CONFIG_SYS_FSL_DDR4
unsigned int dq_mapping[18];