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soc: mediatek: svs: Add support for voltage bins

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Add support voltage bins turn point

Signed-off-by: Mark Tseng <chun-jen.tseng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230921052637.30444-4-chun-jen.tseng@mediatek.com
This commit is contained in:
Mark Tseng 2023-09-21 13:26:37 +08:00 committed by AngeloGioacchino Del Regno
parent 1f6c9cbc49
commit fa095fe0ab
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GPG Key ID: 9A3604CFAD978478
1 changed files with 53 additions and 4 deletions
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57
drivers/soc/mediatek/mtk-svs.c
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@ -407,6 +407,7 @@ struct svs_platform_data {
* @dcbdet: svs efuse data
* @dcmdet: svs efuse data
* @turn_pt: 2-line turn point tells which opp_volt calculated by high/low bank
* @vbin_turn_pt: voltage bin turn point helps know which svsb_volt should be overridden
* @type: bank type to represent it is 2-line (high/low) bank or 1-line bank
*
* Svs bank will generate suitalbe voltages by below general math equation
@ -469,6 +470,7 @@ struct svs_bank {
u32 dcbdet;
u32 dcmdet;
u32 turn_pt;
u32 vbin_turn_pt;
u32 type;
};
@ -751,11 +753,12 @@ static int svs_status_debug_show(struct seq_file *m, void *v)
ret = thermal_zone_get_temp(svsb->tzd, &tzone_temp);
if (ret)
seq_printf(m, "%s: temperature ignore, turn_pt = %u\n",
svsb->name, svsb->turn_pt);
seq_printf(m, "%s: temperature ignore, vbin_turn_pt = %u, turn_pt = %u\n",
svsb->name, svsb->vbin_turn_pt, svsb->turn_pt);
else
seq_printf(m, "%s: temperature = %d, turn_pt = %u\n",
svsb->name, tzone_temp, svsb->turn_pt);
seq_printf(m, "%s: temperature = %d, vbin_turn_pt = %u, turn_pt = %u\n",
svsb->name, tzone_temp, svsb->vbin_turn_pt,
svsb->turn_pt);
for (i = 0; i < svsb->opp_count; i++) {
opp = dev_pm_opp_find_freq_exact(svsb->opp_dev,
@ -952,6 +955,29 @@ static void svs_get_bank_volts_v3(struct svs_platform *svsp)
for (i = opp_start; i < opp_stop; i++)
if (svsb->volt_flags & SVSB_REMOVE_DVTFIXED_VOLT)
svsb->volt[i] -= svsb->dvt_fixed;
/* For voltage bin support */
if (svsb->opp_dfreq[0] > svsb->freq_base) {
svsb->volt[0] = svs_opp_volt_to_bank_volt(svsb->opp_dvolt[0],
svsb->volt_step,
svsb->volt_base);
/* Find voltage bin turn point */
for (i = 0; i < svsb->opp_count; i++) {
if (svsb->opp_dfreq[i] <= svsb->freq_base) {
svsb->vbin_turn_pt = i;
break;
}
}
/* Override svs bank voltages */
for (i = 1; i < svsb->vbin_turn_pt; i++)
svsb->volt[i] = interpolate(svsb->freq_pct[0],
svsb->freq_pct[svsb->vbin_turn_pt],
svsb->volt[0],
svsb->volt[svsb->vbin_turn_pt],
svsb->freq_pct[i]);
}
}
static void svs_set_bank_freq_pct_v3(struct svs_platform *svsp)
@ -1069,6 +1095,29 @@ static void svs_get_bank_volts_v2(struct svs_platform *svsp)
for (i = 0; i < svsb->opp_count; i++)
svsb->volt[i] += svsb->volt_od;
/* For voltage bin support */
if (svsb->opp_dfreq[0] > svsb->freq_base) {
svsb->volt[0] = svs_opp_volt_to_bank_volt(svsb->opp_dvolt[0],
svsb->volt_step,
svsb->volt_base);
/* Find voltage bin turn point */
for (i = 0; i < svsb->opp_count; i++) {
if (svsb->opp_dfreq[i] <= svsb->freq_base) {
svsb->vbin_turn_pt = i;
break;
}
}
/* Override svs bank voltages */
for (i = 1; i < svsb->vbin_turn_pt; i++)
svsb->volt[i] = interpolate(svsb->freq_pct[0],
svsb->freq_pct[svsb->vbin_turn_pt],
svsb->volt[0],
svsb->volt[svsb->vbin_turn_pt],
svsb->freq_pct[i]);
}
}
static void svs_set_bank_freq_pct_v2(struct svs_platform *svsp)