diff options
Diffstat (limited to 'drivers/ddr/fsl/ddr4_dimm_params.c')
| -rw-r--r-- | drivers/ddr/fsl/ddr4_dimm_params.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/ddr/fsl/ddr4_dimm_params.c b/drivers/ddr/fsl/ddr4_dimm_params.c index 1f1d9b897a..5c8fc8804d 100644 --- a/drivers/ddr/fsl/ddr4_dimm_params.c +++ b/drivers/ddr/fsl/ddr4_dimm_params.c @@ -139,6 +139,7 @@ unsigned int ddr_compute_dimm_parameters(const unsigned int ctrl_num, }; int spd_error = 0; u8 *ptr; + u8 val; if (spd->mem_type) { if (spd->mem_type != SPD_MEMTYPE_DDR4) { @@ -191,6 +192,26 @@ unsigned int ddr_compute_dimm_parameters(const unsigned int ctrl_num, pdimm->registered_dimm = 1; if (spd->mod_section.registered.reg_map & 0x1) pdimm->mirrored_dimm = 1; + val = spd->mod_section.registered.ca_stren; + pdimm->rcw[3] = val >> 4; + pdimm->rcw[4] = ((val & 0x3) << 2) | ((val & 0xc) >> 2); + val = spd->mod_section.registered.clk_stren; + pdimm->rcw[5] = ((val & 0x3) << 2) | ((val & 0xc) >> 2); + /* Not all in SPD. For convience only. Boards may overwrite. */ + pdimm->rcw[6] = 0xf; + /* + * A17 only used for 16Gb and above devices. + * C[2:0] only used for 3DS. + */ + pdimm->rcw[8] = pdimm->die_density >= 0x6 ? 0x0 : 0x8 | + (pdimm->package_3ds > 0x3 ? 0x0 : + (pdimm->package_3ds > 0x1 ? 0x1 : + (pdimm->package_3ds > 0 ? 0x2 : 0x3))); + if (pdimm->package_3ds || pdimm->n_ranks != 4) + pdimm->rcw[13] = 0xc; + else + pdimm->rcw[13] = 0xd; /* Fix encoded by board */ + break; case DDR4_SPD_MODULETYPE_UDIMM: |