Unverified Commit fa095fe0 authored by Mark Tseng's avatar Mark Tseng Committed by AngeloGioacchino Del Regno
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soc: mediatek: svs: Add support for voltage bins 



Add support voltage bins turn point

Signed-off-by: default avatarMark Tseng <chun-jen.tseng@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230921052637.30444-4-chun-jen.tseng@mediatek.com
parent 1f6c9cbc

drivers/soc/mediatek/mtk-svs.c

+53 −4
Original line number Diff line number Diff line
@@ -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)