diff options
| author | York Sun <yorksun@freescale.com> | 2012-08-17 08:22:41 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2012-08-23 12:16:56 -0500 |
| commit | 7e4db27ffd11f3eea7e4dfc33354fd087f9257d8 (patch) | |
| tree | e0969470af32c5d761ab276b65ac920af646e14e /arch/powerpc | |
| parent | 45064adcae724bd5162f64f186fdb17bfef8ab42 (diff) | |
powerpc/mpc8xxx DDR: Fix CAS latency calculation
Empty slot should be skipped when calculating CAS latency.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 6 |
1 files changed, 4 insertions, 2 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 a474a654c2..03a784cd47 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c @@ -27,8 +27,10 @@ compute_cas_latency_ddr3(const dimm_params_t *dimm_params, /* compute the common CAS latency supported between slots */ tmp = dimm_params[0].caslat_X; - for (i = 1; i < number_of_dimms; i++) - tmp &= dimm_params[i].caslat_X; + for (i = 1; i < number_of_dimms; i++) { + if (dimm_params[i].n_ranks) + tmp &= dimm_params[i].caslat_X; + } common_caslat = tmp; /* compute the max tAAmin tCKmin between slots */ |