diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2016-11-12 11:39:57 +0100 |
|---|---|---|
| committer | Patrick Rudolph <siro@das-labor.org> | 2016-11-20 15:00:53 +0100 |
| commit | f70475484769c6b7310446f084d4fecbf1a82f70 (patch) | |
| tree | f75c8f3db87c2e34458ee5e4561422289a282b28 | |
| parent | bec669685cdd77e12cdf8fad2e68d39218cfdba7 (diff) | |
nb/intel/sandybridge/raminit: Get rid of fallback attempts
Locking the PLL again once it's locked doesn't work.
The MRC doesn't do this, for some reason.
Remove fallback attempts of lowering DDR frequency.
Change-Id: Iccb54fa7d7357a22182dd26bd5b49c4073c04dc9
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/17399
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
| -rw-r--r-- | src/northbridge/intel/sandybridge/raminit.c | 21 |
1 files changed, 1 insertions, 20 deletions
diff --git a/src/northbridge/intel/sandybridge/raminit.c b/src/northbridge/intel/sandybridge/raminit.c index 8123014e91..65d4348c65 100644 --- a/src/northbridge/intel/sandybridge/raminit.c +++ b/src/northbridge/intel/sandybridge/raminit.c @@ -834,11 +834,8 @@ static void dram_freq(ramctr_timing * ctrl) */ reg1 = MCHBAR32(0x5e04); val2 = (u8) reg1; - if (val2 == FRQ) { - printk(BIOS_DEBUG, "MCU frequency is set at : %d MHz\n", - (1000 << 8) / ctrl->tCK); + if (val2) return; - } /* Step 2 - Select frequency in the MCU */ reg1 = FRQ; @@ -4275,22 +4272,6 @@ void init_dram_ddr3(spd_raw_data *spds, int mobile, int min_tck, err = try_init_dram_ddr3(&ctrl, fast_boot, s3resume, me_uma_size); } - if (err && (ctrl.tCK < TCK_400MHZ)) { - /* fallback: lower clock frequency */ - printk(BIOS_ERR, "RAM training failed, trying fallback.\n"); - printram("Decreasing clock frequency.\n"); - ctrl.tCK++; - err = try_init_dram_ddr3(&ctrl, fast_boot, s3resume, me_uma_size); - } - - if (err && (ctrl.tCK < TCK_400MHZ)) { - /* fallback: lower clock frequency */ - printk(BIOS_ERR, "RAM training failed, trying fallback.\n"); - printram("Decreasing clock frequency.\n"); - ctrl.tCK++; - err = try_init_dram_ddr3(&ctrl, fast_boot, s3resume, me_uma_size); - } - if (err) { /* fallback: disable failing channel */ printk(BIOS_ERR, "RAM training failed, trying fallback.\n"); |