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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> | 2018-05-31 03:36:20 -0500 |
| commit | 884b60b16009061ab84db88f918902a8c8098a4b (patch) | |
| tree | 9366521ae4b5aa5fc11d4d632e83f7d35c09c161 | |
| parent | fce3f3b362e4a1d9eeee7de3e02dc20215b14cae (diff) | |
| download | talos-hostboot-884b60b16009061ab84db88f918902a8c8098a4b.tar.gz talos-hostboot-884b60b16009061ab84db88f918902a8c8098a4b.zip | |
Cap voltage offset when biased06-04-2018
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 1b1c4f113..4f16ed1f6 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 @@ -4862,11 +4862,15 @@ 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 |
