diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c index 03a784cd47..6a1f4e4e38 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c @@ -76,7 +76,7 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params, unsigned int compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, common_timing_params_t *outpdimm, - unsigned int number_of_dimms) + const unsigned int number_of_dimms) { unsigned int i, j; @@ -126,13 +126,20 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, temp1++; continue; } + + /* + * check if quad-rank DIMM is plugged if + * CONFIG_CHIP_SELECT_QUAD_CAPABLE is not defined + * Only the board with proper design is capable + */ +#ifndef CONFIG_FSL_DDR_FIRST_SLOT_QUAD_CAPABLE if (dimm_params[i].n_ranks == 4 && \ CONFIG_CHIP_SELECTS_PER_CTRL/CONFIG_DIMM_SLOTS_PER_CTLR < 4) { printf("Found Quad-rank DIMM, not able to support."); temp1++; continue; } - +#endif /* * Find minimum tCKmax_ps to find fastest slow speed, * i.e., this is the slowest the whole system can go. @@ -236,11 +243,14 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, if (outpdimm->all_DIMMs_registered) for (j = 0; j < 16; j++) { outpdimm->rcw[j] = dimm_params[0].rcw[j]; - for (i = 1; i < number_of_dimms; i++) + for (i = 1; i < number_of_dimms; i++) { + if (!dimm_params[i].n_ranks) + continue; if (dimm_params[i].rcw[j] != dimm_params[0].rcw[j]) { temp1 = 1; break; } + } } if (temp1 != 0) |
