[PATCH v2 12/13] soc: mediatek: mtk-svs: add thermal voltage compensation if needed

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Some extreme test environment may keep IC temperature very low or very high
during system boot stage. For stability concern, we add thermal voltage
compenstation if needed no matter svs bank phase is in init02 or mon mode.

Signed-off-by: Roger Lu <roger.lu@xxxxxxxxxxxx>
---
 drivers/soc/mediatek/mtk-svs.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
index b3a345205319..8ef330175d39 100644
--- a/drivers/soc/mediatek/mtk-svs.c
+++ b/drivers/soc/mediatek/mtk-svs.c
@@ -585,7 +585,7 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
 	}
 
 	/* Get thermal effect */
-	if (svsb->phase == SVSB_PHASE_MON) {
+	if (!IS_ERR_OR_NULL(svsb->tzd)) {
 		ret = thermal_zone_get_temp(svsb->tzd, &tzone_temp);
 		if (ret || (svsb->temp > SVSB_TEMP_UPPER_BOUND &&
 			    svsb->temp < SVSB_TEMP_LOWER_BOUND)) {
@@ -600,7 +600,8 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
 			temp_voffset += svsb->tzone_ltemp_voffset;
 
 		/* 2-line bank update all opp volts when running mon mode */
-		if (svsb->type == SVSB_HIGH || svsb->type == SVSB_LOW) {
+		if (svsb->phase == SVSB_PHASE_MON && (svsb->type == SVSB_HIGH ||
+						      svsb->type == SVSB_LOW)) {
 			opp_start = 0;
 			opp_stop = svsb->opp_count;
 		}
@@ -616,11 +617,6 @@ static int svs_adjust_pm_opp_volts(struct svs_bank *svsb)
 			/* do nothing */
 			goto unlock_mutex;
 		case SVSB_PHASE_INIT02:
-			svsb_volt = max(svsb->volt[i], svsb->vmin);
-			opp_volt = svs_bank_volt_to_opp_volt(svsb_volt,
-							     svsb->volt_step,
-							     svsb->volt_base);
-			break;
 		case SVSB_PHASE_MON:
 			svsb_volt = max(svsb->volt[i] + temp_voffset, svsb->vmin);
 			opp_volt = svs_bank_volt_to_opp_volt(svsb_volt,
@@ -1710,7 +1706,7 @@ static int svs_bank_resource_setup(struct svs_platform *svsp)
 			}
 		}
 
-		if (svsb->mode_support & SVSB_MODE_MON) {
+		if (!IS_ERR_OR_NULL(svsb->tzone_name)) {
 			svsb->tzd = thermal_zone_get_zone_by_name(svsb->tzone_name);
 			if (IS_ERR(svsb->tzd)) {
 				dev_err(svsb->dev, "cannot get \"%s\" thermal zone\n",
@@ -2154,6 +2150,7 @@ static struct svs_bank svs_mt8192_banks[] = {
 		.type			= SVSB_LOW,
 		.set_freq_pct		= svs_set_bank_freq_pct_v3,
 		.get_volts		= svs_get_bank_volts_v3,
+		.tzone_name		= "gpu1",
 		.volt_flags		= SVSB_REMOVE_DVTFIXED_VOLT,
 		.mode_support		= SVSB_MODE_INIT02,
 		.opp_count		= MAX_OPP_ENTRIES,
@@ -2171,6 +2168,10 @@ static struct svs_bank svs_mt8192_banks[] = {
 		.core_sel		= 0x0fff0100,
 		.int_st			= BIT(0),
 		.ctl0			= 0x00540003,
+		.tzone_htemp		= 85000,
+		.tzone_htemp_voffset	= 0,
+		.tzone_ltemp		= 25000,
+		.tzone_ltemp_voffset	= 7,
 	},
 	{
 		.sw_id			= SVSB_GPU,
-- 
2.18.0




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux