linux-kernel - [PATCH 3/3] thermal/drivers/mediatek/lvts

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Message-ID: <20250526102659.30225-4-mason-cw.chang@mediatek.com>
Date: Mon, 26 May 2025 18:26:59 +0800
From: Mason Chang <mason-cw.chang@...iatek.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, Daniel Lezcano
	<daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>, Lukasz Luba
	<lukasz.luba@....com>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>,
	Nícolas F. R. A. Prado
	<nfraprado@...labora.com>, Julien Panis <jpanis@...libre.com>, Nicolas Pitre
	<npitre@...libre.com>, Colin Ian King <colin.i.king@...il.com>,
	Uwe Kleine-König <u.kleine-koenig@...libre.com>, "Chen-Yu
 Tsai" <wenst@...omium.org>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>, Frank Wunderlich
	<frank-w@...lic-files.de>, Daniel Golle <daniel@...rotopia.org>, Steven Liu
	<steven.liu@...iatek.com>, Sam Shih <sam.shih@...iatek.com>
CC: Mason Chang <mason-cw.chang@...iatek.com>
Subject: [PATCH 3/3] thermal/drivers/mediatek/lvts_thermal: add mt7988 lvts commands

These commands are necessary to avoid severely abnormal and inaccurate
temperature readings that are caused by using the default commands.

Signed-off-by: Mason Chang <mason-cw.chang@...iatek.com>
---
 drivers/thermal/mediatek/lvts_thermal.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index 5b7bf29a7..4d49482f0 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -1443,6 +1443,8 @@ static int lvts_resume(struct device *dev)
 }
 
 static const u32 default_conn_cmds[] = { 0xC103FFFF, 0xC502FF55 };
+static const u32 mt7988_conn_cmds[] = { 0xC103FFFF, 0xC502FC55 };
+
 /*
  * Write device mask: 0xC1030000
  */
@@ -1453,6 +1455,12 @@ static const u32 default_init_cmds[] = {
 	0xC10300FC, 0xC103009D, 0xC10300F1, 0xC10300E1
 };
 
+static const u32 mt7988_init_cmds[] = {
+	0xC1030300, 0xC1030420, 0xC1030500, 0xC10307A6, 0xC1030CFC,
+	0xC1030A8C, 0xC103098D, 0xC10308F1, 0xC1030B04, 0xC1030E01,
+	0xC10306B8
+};
+
 /*
  * The MT8186 calibration data is stored as packed 3-byte little-endian
  * values using a weird layout that makes sense only when viewed as a 32-bit
@@ -1747,11 +1755,11 @@ static const struct lvts_ctrl_data mt8195_lvts_ap_data_ctrl[] = {
 
 static const struct lvts_data mt7988_lvts_ap_data = {
 	.lvts_ctrl	= mt7988_lvts_ap_data_ctrl,
-	.conn_cmd	= default_conn_cmds,
-	.init_cmd	= default_init_cmds,
+	.conn_cmd	= mt7988_conn_cmds,
+	.init_cmd	= mt7988_init_cmds,
 	.num_lvts_ctrl	= ARRAY_SIZE(mt7988_lvts_ap_data_ctrl),
-	.num_conn_cmd	= ARRAY_SIZE(default_conn_cmds),
-	.num_init_cmd	= ARRAY_SIZE(default_init_cmds),
+	.num_conn_cmd	= ARRAY_SIZE(mt7988_conn_cmds),
+	.num_init_cmd	= ARRAY_SIZE(mt7988_init_cmds),
 	.temp_factor	= LVTS_COEFF_A_MT7988,
 	.temp_offset	= LVTS_COEFF_B_MT7988,
 	.gt_calib_bit_offset = 24,
-- 
2.45.2