From: Roger Lu <roger.lu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
Enric Balletbo Serra <eballetbo@gmail.com>,
Kevin Hilman <khilman@kernel.org>,
Nicolas Boichat <drinkcat@google.com>
Cc: Fan Chen <fan.chen@mediatek.com>,
Roger Lu <roger.lu@mediatek.com>,
Jia-wei Chang <jia-wei.chang@mediatek.com>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
<Project_Global_Chrome_Upstream_Group@mediatek.com>
Subject: [PATCH v2 12/13] soc: mediatek: mtk-svs: add thermal voltage compensation if needed
Date: Tue, 27 Dec 2022 20:09:13 +0800 [thread overview]
Message-ID: <20221227120914.11346-13-roger.lu@mediatek.com> (raw)
In-Reply-To: <20221227120914.11346-1-roger.lu@mediatek.com>
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@mediatek.com>
---
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
next prev parent reply other threads:[~2022-12-27 12:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-27 12:09 [PATCH v2 0/13] Enhance SVS's robustness Roger Lu
2022-12-27 12:09 ` [PATCH v2 01/13] soc: mediatek: mtk-svs: enable the IRQ later Roger Lu
2022-12-27 12:09 ` [PATCH v2 02/13] soc: mediatek: mtk-svs: Use pm_runtime_resume_and_get() in svs_init01() Roger Lu
2022-12-27 12:09 ` [PATCH v2 03/13] soc: mediatek: mtk-svs: clean up platform probing Roger Lu
2022-12-27 12:09 ` [PATCH v2 04/13] soc: mediatek: mtk-svs: improve readability of platform_probe Roger Lu
2022-12-27 12:09 ` [PATCH v2 05/13] soc: mediatek: mtk-svs: move svs_platform_probe into probe Roger Lu
2022-12-27 12:09 ` [PATCH v2 06/13] soc: mediatek: mtk-svs: delete superfluous platform data entries Roger Lu
2022-12-27 12:09 ` [PATCH v2 07/13] soc: mtk-svs: mt8183: refactor o_slope calculation Roger Lu
2022-12-27 12:09 ` [PATCH v2 08/13] soc: mediatek: mtk-svs: use svs get efuse common function Roger Lu
2022-12-27 12:09 ` [PATCH v2 09/13] soc: mediatek: mtk-svs: use svs clk control APIs Roger Lu
2022-12-27 12:09 ` [PATCH v2 10/13] soc: mediatek: mtk-svs: use common function to disable restore voltages Roger Lu
2022-12-27 12:09 ` [PATCH v2 11/13] soc: mediatek: mtk-svs: restore default voltages when svs_init02() fail Roger Lu
2022-12-27 12:09 ` Roger Lu [this message]
2022-12-27 12:09 ` [PATCH v2 13/13] soc: mediatek: mtk-svs: keep svs alive even though debug cmd create fail Roger Lu
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