diff options
| author | York Sun <york.sun@nxp.com> | 2018-01-29 09:44:33 -0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2018-01-30 09:14:06 -0800 |
| commit | 426230a65f2dd62c3b6c1509e9775d5500db20d3 (patch) | |
| tree | 1f500bcdf25fc0ed2a5840bcdecd558173de9da1 /drivers/ddr/fsl/ddr4_dimm_params.c | |
| parent | a9b1c2164a45e0c1af59b8e7a1c92f2f53babe92 (diff) | |
drivers/ddr/fsl: Fix DDR4 RDIMM support
For DDR4, command/address delay in mode registers and parity latency
in timing config register are only needed for UDIMMs, but not RDIMMs.
Add additional register rcw_3 for DDR4 RDIMM. Fix mirrored bit for
dual rank RDIMMs. Set sdram_cfg_3[DIS_MRS_PAR] for RDIMMs. Fix
calculation of timing config registers. Use hexadecimal format for
printing RCW (register control word) registers.
Signed-off-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'drivers/ddr/fsl/ddr4_dimm_params.c')
| -rw-r--r-- | drivers/ddr/fsl/ddr4_dimm_params.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/ddr/fsl/ddr4_dimm_params.c b/drivers/ddr/fsl/ddr4_dimm_params.c index 42834ca7b2..6e26ba88a5 100644 --- a/drivers/ddr/fsl/ddr4_dimm_params.c +++ b/drivers/ddr/fsl/ddr4_dimm_params.c @@ -179,6 +179,8 @@ unsigned int ddr_compute_dimm_parameters(const unsigned int ctrl_num, case DDR4_SPD_MODULETYPE_RDIMM: /* Registered/buffered DIMMs */ pdimm->registered_dimm = 1; + if (spd->mod_section.registered.reg_map & 0x1) + pdimm->mirrored_dimm = 1; break; case DDR4_SPD_MODULETYPE_UDIMM: |