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| author | York Sun <yorksun@freescale.com> | 2015-03-19 09:30:27 -0700 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-04-23 08:55:53 -0700 |
| commit | 6b95be228024c7d15b9164b59187ef02333bb0c8 (patch) | |
| tree | 49df5d8e2ae4d0163319a538aedbeab022c1d869 /drivers/ddr/fsl/lc_common_dimm_params.c | |
| parent | 66869f955417b89dbf6b7cbb72738b2205a26bf8 (diff) | |
| download | talos-obmc-uboot-6b95be228024c7d15b9164b59187ef02333bb0c8.tar.gz talos-obmc-uboot-6b95be228024c7d15b9164b59187ef02333bb0c8.zip | |
driver/ddr/fsl: Fix driver to support empty first slot
CS0 was not allowed to be empty by u-boot driver in the past to simplify
the driver. This may be inconvenient for some debugging. This patch lifts
the restrictions. Controller interleaving still requires CS0 populated.
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/ddr/fsl/lc_common_dimm_params.c')
| -rw-r--r-- | drivers/ddr/fsl/lc_common_dimm_params.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/ddr/fsl/lc_common_dimm_params.c b/drivers/ddr/fsl/lc_common_dimm_params.c index b295344c4d..b12eeb9f01 100644 --- a/drivers/ddr/fsl/lc_common_dimm_params.c +++ b/drivers/ddr/fsl/lc_common_dimm_params.c @@ -22,7 +22,7 @@ compute_cas_latency(const unsigned int ctrl_num, unsigned int common_caslat; unsigned int caslat_actual; unsigned int retry = 16; - unsigned int tmp; + unsigned int tmp = ~0; const unsigned int mclk_ps = get_memory_clk_period_ps(ctrl_num); #ifdef CONFIG_SYS_FSL_DDR3 const unsigned int taamax = 20000; @@ -31,8 +31,7 @@ compute_cas_latency(const unsigned int ctrl_num, #endif /* compute the common CAS latency supported between slots */ - tmp = dimm_params[0].caslat_x; - for (i = 1; i < number_of_dimms; i++) { + for (i = 0; i < number_of_dimms; i++) { if (dimm_params[i].n_ranks) tmp &= dimm_params[i].caslat_x; } |
