diff options
| author | Shengzhou Liu <Shengzhou.Liu@nxp.com> | 2016-03-10 09:36:56 (GMT) |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-03-21 19:42:13 (GMT) |
| commit | eb118807a4c1778bda6294c36e379711cb08e198 (patch) | |
| tree | 6c9d9b92e8d5f928fb375223bd9d80c17dab020c /drivers/ddr/fsl/options.c | |
| parent | 5e8e27b743a650aebc3d79823cbd8443ca12d4b8 (diff) | |
| download | u-boot-fsl-qoriq-eb118807a4c1778bda6294c36e379711cb08e198.tar.xz | |
driver/ddr/fsl: Add address parity support for DDR4 UDIMM/discrete
Add support of address parity for DDR4 UDIMM or discrete memory.
It requires to configurate corresponding MR5[2:0] and
TIMING_CFG_7[PAR_LAT]. Parity can be turned on by hwconfig,
e.g. hwconfig=fsl_ddr:parity=on.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'drivers/ddr/fsl/options.c')
| -rw-r--r-- | drivers/ddr/fsl/options.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/ddr/fsl/options.c b/drivers/ddr/fsl/options.c index 791d644..d0075ff 100644 --- a/drivers/ddr/fsl/options.c +++ b/drivers/ddr/fsl/options.c @@ -1002,8 +1002,19 @@ unsigned int populate_memctl_options(const common_timing_params_t *common_dimm, popts->twot_en = 0; popts->threet_en = 0; - /* for RDIMM, address parity enable */ - popts->ap_en = 1; + /* for RDIMM and DDR4 UDIMM/discrete memory, address parity enable */ + if (popts->registered_dimm_en) + popts->ap_en = 1; /* 0 = disable, 1 = enable */ + else + popts->ap_en = 0; /* disabled for DDR4 UDIMM/discrete default */ + + if (hwconfig_sub_f("fsl_ddr", "parity", buf)) { + if (hwconfig_subarg_cmp_f("fsl_ddr", "parity", "on", buf)) { + if (popts->registered_dimm_en || + (CONFIG_FSL_SDRAM_TYPE == SDRAM_TYPE_DDR4)) + popts->ap_en = 1; + } + } /* * BSTTOPRE precharge interval |