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| author | Timothy Pearson <tpearson@raptorengineering.com> | 2018-04-24 21:13:30 -0500 |
|---|---|---|
| committer | Raptor Engineering Development Team <support@raptorengineering.com> | 2018-06-17 14:39:12 -0500 |
| commit | c46b8cb8de9bac66b62969b0499b52153e4d1818 (patch) | |
| tree | db6689d6f18093bb3897d20c49a875046fe4e1ca | |
| parent | b74d67a1e53dadd2c5e936ea437540d8804aec99 (diff) | |
| download | talos-hostboot-06-18-2018.tar.gz talos-hostboot-06-18-2018.zip | |
Cap voltage offset when biased06-18-2018
This fixes spurious (invalid) voltage requests when the bias frequency exceeds the maximum WoF frequency
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C b/src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C index 9dee852b2..12bbb914f 100644 --- a/src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C +++ b/src/import/chips/p9/procedures/hwp/pm/p9_pstate_parameter_block.C @@ -4689,11 +4689,15 @@ uint32_t ps2v_mv(const Pstate i_pstate, FAPI_INF ("l_SlopeValue %x",l_SlopeValue); - uint32_t x = (l_SlopeValue * (-i_pstate + i_operating_points[region_start].pstate)); + int32_t x_candidate = (l_SlopeValue * (-i_pstate + i_operating_points[region_start].pstate)); + uint32_t x = 0; uint32_t y = x >> VID_SLOPE_FP_SHIFT_12; + if (x_candidate > 0) + x = x_candidate; + uint32_t l_vdd = - (((l_SlopeValue * (-i_pstate + i_operating_points[region_start].pstate)) >> VID_SLOPE_FP_SHIFT_12) + ((x >> VID_SLOPE_FP_SHIFT_12) + revle32(i_operating_points[region_start].vdd_mv)); // Round up |
