linux-kernel - [PATCH v1 4/5] thermal/drivers/mediatek/lvts

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Message-ID: <20251026122143.71100-5-linux@fw-web.de>
Date: Sun, 26 Oct 2025 13:21:33 +0100
From: Frank Wunderlich <linux@...web.de>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Lukasz Luba <lukasz.luba@....com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
	Nícolas F. R. A. Prado <nfraprado@...labora.com>,
	Mason Chang <mason-cw.chang@...iatek.com>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Balsam CHIHI <bchihi@...libre.com>,
	linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH v1 4/5] thermal/drivers/mediatek/lvts_thermal: Add SoC based golden Temp

From: Frank Wunderlich <frank-w@...lic-files.de>

Add SoC based golden temp for invalid efuse data.

This is a preliminary patch for mt7987 support where goldentemp is
slightly higher than other SOCs.

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 drivers/thermal/mediatek/lvts_thermal.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index 9413b30f7b69..544941e8219a 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -134,6 +134,7 @@ struct lvts_data {
 	int num_init_cmd;
 	int temp_factor;
 	int temp_offset;
+	int golden_temp;
 	int gt_calib_bit_offset;
 	unsigned int def_calibration;
 	bool irq_enable;
@@ -811,8 +812,10 @@ static int lvts_golden_temp_init(struct device *dev, u8 *calib,
 	gt = (((u32 *)calib)[0] >> lvts_data->gt_calib_bit_offset) & 0xff;
 
 	/* A zero value for gt means that device has invalid efuse data */
-	if (gt && gt < LVTS_GOLDEN_TEMP_MAX)
+	if (gt && gt <= LVTS_GOLDEN_TEMP_MAX)
 		golden_temp = gt;
+	else
+		golden_temp = lvts_data->golden_temp;
 
 	golden_temp_offset = golden_temp * 500 + lvts_data->temp_offset;
 
@@ -1786,6 +1789,7 @@ static const struct lvts_data mt7988_lvts_ap_data = {
 	.num_init_cmd	= ARRAY_SIZE(mt7988_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT7988,
 	.temp_offset	= LVTS_COEFF_B_MT7988,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.irq_enable = true, //SDK false
 };
@@ -1799,6 +1803,7 @@ static const struct lvts_data mt8186_lvts_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT7988,
 	.temp_offset	= LVTS_COEFF_B_MT7988,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.def_calibration = 19000,
 	.irq_enable = true,
@@ -1813,6 +1818,7 @@ static const struct lvts_data mt8188_lvts_mcu_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 20,
 	.def_calibration = 35000,
 	.irq_enable = true,
@@ -1827,6 +1833,7 @@ static const struct lvts_data mt8188_lvts_ap_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 20,
 	.def_calibration = 35000,
 	.irq_enable = true,
@@ -1841,6 +1848,7 @@ static const struct lvts_data mt8192_lvts_mcu_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.def_calibration = 35000,
 	.irq_enable = true,
@@ -1855,6 +1863,7 @@ static const struct lvts_data mt8192_lvts_ap_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.def_calibration = 35000,
 	.irq_enable = true,
@@ -1869,6 +1878,7 @@ static const struct lvts_data mt8195_lvts_mcu_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.def_calibration = 35000,
 	.irq_enable = true,
@@ -1883,6 +1893,7 @@ static const struct lvts_data mt8195_lvts_ap_data = {
 	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT8195,
 	.temp_offset	= LVTS_COEFF_B_MT8195,
+	.golden_temp	= LVTS_GOLDEN_TEMP_DEFAULT,
 	.gt_calib_bit_offset = 24,
 	.def_calibration = 35000,
 };
-- 
2.43.0