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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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8
include/ddr_spd.h
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@@ -382,9 +382,11 @@ struct ddr4_spd_eeprom_s {
/* 135 Register Revision Number */
uint8_t reg_rev;
/* 136 Address mapping from register to DRAM */
uint8_t reg_map;
/* 137~253 Reserved */
uint8_t res_137[254-137];
u8 reg_map;
u8 ca_stren;
u8 clk_stren;
/* 139~253 Reserved */
u8 res_137[254 - 139];
/* 254~255 CRC */
uint8_t crc[2];
} registered;