diff options
| author | David Collins <collinsd@codeaurora.org> | 2016-08-03 16:17:42 -0700 |
|---|---|---|
| committer | David Collins <collinsd@codeaurora.org> | 2016-08-05 16:41:32 -0700 |
| commit | e239c7f54120117e66141983e770bffc4b161cf2 (patch) | |
| tree | 04c56b9dc96b5e2d6576befae85d8db8ab555ee4 /drivers | |
| parent | e8cea36bf89cb28fb4e96de51200cf59fb1a2a6a (diff) | |
regulator: cpr3-mmss-regulator: add support for force highest corner fuse
Add support for the MSMCOBALT force highest corner fuse. This
fuse is set on parts which can only operate consistently when
the highest corner's voltage is applied to all of the lower
corners.
Change-Id: Ibeef761044deea375dc7684c0a160609b610b8f6
CRs-Fixed: 1050071
Signed-off-by: David Collins <collinsd@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/regulator/cpr3-mmss-regulator.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/regulator/cpr3-mmss-regulator.c b/drivers/regulator/cpr3-mmss-regulator.c index f2a1f6730228..232bcf8fcf31 100644 --- a/drivers/regulator/cpr3-mmss-regulator.c +++ b/drivers/regulator/cpr3-mmss-regulator.c @@ -50,6 +50,9 @@ * @limitation: CPR limitation select fuse parameter value * @aging_init_quot_diff: Initial quotient difference between CPR aging * min and max sensors measured at time of manufacturing + * @force_highest_corner: Flag indicating that all corners must operate + * at the voltage of the highest corner. This is + * applicable to MSMCOBALT only. * * This struct holds the values for all of the fuses read from memory. */ @@ -60,6 +63,7 @@ struct cpr3_msm8996_mmss_fuses { u64 cpr_fusing_rev; u64 limitation; u64 aging_init_quot_diff; + u64 force_highest_corner; }; /* Fuse combos 0 - 7 map to CPR fusing revision 0 - 7 */ @@ -158,6 +162,12 @@ msmcobalt_mmss_offset_voltage_param[MSM8996_MMSS_FUSE_CORNERS][2] = { {{65, 44, 47}, {} }, }; +static const struct cpr3_fuse_param +msmcobalt_cpr_force_highest_corner_param[] = { + {100, 45, 45}, + {}, +}; + #define MSM8996PRO_SOC_ID 4 #define MSMCOBALT_SOC_ID 5 @@ -344,6 +354,19 @@ static int cpr3_msm8996_mmss_read_fuse_data(struct cpr3_regulator *vreg) } if (vreg->thread->ctrl->soc_revision == MSMCOBALT_SOC_ID) { + rc = cpr3_read_fuse_param(base, + msmcobalt_cpr_force_highest_corner_param, + &fuse->force_highest_corner); + if (rc) { + cpr3_err(vreg, "Unable to read CPR force highest corner fuse, rc=%d\n", + rc); + return rc; + } + if (fuse->force_highest_corner) + cpr3_info(vreg, "Fusing requires all operation at the highest corner\n"); + } + + if (vreg->thread->ctrl->soc_revision == MSMCOBALT_SOC_ID) { combo_max = CPR3_MSMCOBALT_MMSS_FUSE_COMBO_COUNT; vreg->fuse_combo = fuse->cpr_fusing_rev; } else if (vreg->thread->ctrl->soc_revision == MSM8996PRO_SOC_ID) { @@ -861,6 +884,24 @@ static int cpr3_msmcobalt_partial_binning_override(struct cpr3_regulator *vreg) if (vreg->thread->ctrl->soc_revision != MSMCOBALT_SOC_ID) return 0; + /* Handle the force highest corner fuse. */ + if (fuse->force_highest_corner) { + cpr3_info(vreg, "overriding CPR parameters for corners 0 to %d with quotients and voltages of corner %d\n", + vreg->corner_count - 2, vreg->corner_count - 1); + corner = &vreg->corner[vreg->corner_count - 1]; + for (i = 0; i < vreg->corner_count - 1; i++) { + proc_freq = vreg->corner[i].proc_freq; + vreg->corner[i] = *corner; + vreg->corner[i].proc_freq = proc_freq; + } + + /* + * Return since the potential partial binning fuse values are + * superceded by the force highest corner fuse value. + */ + return 0; + } + /* * Allow up to the max corner which can be fused with partial * binning values. |