diff options
| author | York Sun <yorksun@freescale.com> | 2013-06-25 11:37:47 -0700 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2013-08-09 12:41:39 -0700 |
| commit | b61e06156660579ea6e248abd2506ebdd85e7a14 (patch) | |
| tree | eba0f80c68d9843b7caaa5eb699f756e7f1403b6 /arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c | |
| parent | 5ecf41cc3d69e797ec0ce77c052495d2846a4aaf (diff) | |
powerpc/mpc8xxx: Add x4 DDR device support
On selected platforms, x4 DDR devices can be supported. Using x4 devices may
lower the performance, but generally they are available for higher density.
Tested on MT36JSF2G72PZ-1G9E1 RDIMM.
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c index 3e7c269e402..b67158c0ffa 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c @@ -129,6 +129,7 @@ ddr_compute_dimm_parameters(const ddr3_spd_eeprom_t *spd, pdimm->ec_sdram_width = 0; pdimm->data_width = pdimm->primary_sdram_width + pdimm->ec_sdram_width; + pdimm->device_width = 1 << ((spd->organization & 0x7) + 2); /* These are the types defined by the JEDEC DDR3 SPD spec */ pdimm->mirrored_dimm = 0; |