diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2017-08-08 13:13:51 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-08-10 16:09:01 +0000 |
| commit | b794a69ce9b2cbb9d6565cf0f3ac609402ad680a (patch) | |
| tree | f200de26860f1d7f1465bb604f29e08b29f6cbc1 /src/northbridge/intel/sandybridge/raminit_common.c | |
| parent | db27e3384a596aad4e33abf535a72d42f7aab1e8 (diff) | |
nb/intel/sandybridge/raminit: Add Kconfig option for fuses
Add a new Kconfig option to ignore memory fuses that limit the
maximum DRAM frequency to be used. The option is disabled by
default and should only enabled by experienced users as it
might decrease system stability or prevent a successful RAM
training.
Remove conflicting devicetree settings.
Change-Id: I35dd78a02bcaafce8ba522d253c795d7835bacae
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20907
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Nicola Corna <nicola@corna.info>
Diffstat (limited to 'src/northbridge/intel/sandybridge/raminit_common.c')
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit_common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c index c6ff551fbf..3e69f4da72 100644 --- a/src/northbridge/intel/sandybridge/raminit_common.c +++ b/src/northbridge/intel/sandybridge/raminit_common.c @@ -402,6 +402,9 @@ unsigned int get_mem_min_tck(void) /* If this is zero, it just means devicetree.cb didn't set it */ if (!cfg || cfg->max_mem_clock_mhz == 0) { + if (IS_ENABLED(CONFIG_NATIVE_RAMINIT_IGNORE_MAX_MEM_FUSES)) + return TCK_1333MHZ; + rev = pci_read_config8(PCI_DEV(0, 0, 0), PCI_DEVICE_ID); if ((rev & BASE_REV_MASK) == BASE_REV_SNB) { |