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mpc8xxx: update module_type values from JEDEC DDR3 SPD Specification

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Newer JEDEC DDR3 SPD Specifications define several additional values for
the DDR3 module_type field which were undefined when this code was
written. Update the code to handle the newer module types.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Cc: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Ira W. Snyder 2011-11-21 13:20:33 -08:00 committed by Kumar Gala
parent ae6b03fefc
commit 2f3a71f235
2 changed files with 14 additions and 0 deletions
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7
arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
View file

@ -135,6 +135,7 @@ ddr_compute_dimm_parameters(const ddr3_spd_eeprom_t *spd,
switch (spd->module_type & DDR3_SPD_MODULETYPE_MASK) {
case DDR3_SPD_MODULETYPE_RDIMM:
case DDR3_SPD_MODULETYPE_MINI_RDIMM:
case DDR3_SPD_MODULETYPE_72B_SO_RDIMM:
/* Registered/buffered DIMMs */
pdimm->registered_dimm = 1;
for (i = 0; i < 16; i += 2) {
@ -148,6 +149,12 @@ ddr_compute_dimm_parameters(const ddr3_spd_eeprom_t *spd,
case DDR3_SPD_MODULETYPE_SO_DIMM:
case DDR3_SPD_MODULETYPE_MICRO_DIMM:
case DDR3_SPD_MODULETYPE_MINI_UDIMM:
case DDR3_SPD_MODULETYPE_MINI_CDIMM:
case DDR3_SPD_MODULETYPE_72B_SO_UDIMM:
case DDR3_SPD_MODULETYPE_72B_SO_CDIMM:
case DDR3_SPD_MODULETYPE_LRDIMM:
case DDR3_SPD_MODULETYPE_16B_SO_DIMM:
case DDR3_SPD_MODULETYPE_32B_SO_DIMM:
/* Unbuffered DIMMs */
if (spd->mod_section.unbuffered.addr_mapping & 0x1)
pdimm->mirrored_dimm = 1;

7
include/ddr_spd.h
View file

@ -325,5 +325,12 @@ extern unsigned int ddr3_spd_check(const ddr3_spd_eeprom_t *spd);
#define DDR3_SPD_MODULETYPE_MICRO_DIMM (0x04)
#define DDR3_SPD_MODULETYPE_MINI_RDIMM (0x05)
#define DDR3_SPD_MODULETYPE_MINI_UDIMM (0x06)
#define DDR3_SPD_MODULETYPE_MINI_CDIMM (0x07)
#define DDR3_SPD_MODULETYPE_72B_SO_UDIMM (0x08)
#define DDR3_SPD_MODULETYPE_72B_SO_RDIMM (0x09)
#define DDR3_SPD_MODULETYPE_72B_SO_CDIMM (0x0A)
#define DDR3_SPD_MODULETYPE_LRDIMM (0x0B)
#define DDR3_SPD_MODULETYPE_16B_SO_DIMM (0x0C)
#define DDR3_SPD_MODULETYPE_32B_SO_DIMM (0x0D)
#endif /* _DDR_SPD_H_ */