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Add MT7987 Thermal support

PATCH In review Frank Wunderlich 2 participants 4 messages Dec 23, 2025 – Jan 16

Subsystems (3)
Device tree bindings Arm MediaTek Thermal
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Frank Wunderlich

author
#0 lore raw

v2 cover Add MT7987 Thermal support

From: Frank Wunderlich <[email protected]>

This series adds Thermal support for MT7987.

v2:
- dropped non-irq patches
- dropped patch for golden_temp
- moved mt7987 COEFF above mt7988

Frank Wunderlich (2):
dt-bindings: thermal: mediatek: Add LVTS thermal controller definition

    for MT7987

thermal/drivers/mediatek/lvts_thermal: Add mt7987 support

 .../thermal/mediatek,lvts-thermal.yaml        |  1 +
 drivers/thermal/mediatek/lvts_thermal.c       | 36 +++++++++++++++++++
 .../thermal/mediatek,lvts-thermal.h           |  3 ++
 3 files changed, 40 insertions(+)
Signature · 1 line
2.43.0
author
#1 lore raw

PATCH v2 1/2 dt-bindings: thermal: mediatek: Add LVTS thermal controller definition for MT7987

From: Frank Wunderlich <[email protected]>

Add thermal controller definition for MT7987.

Signed-off-by Frank Wunderlich <[email protected]>
Acked-by Rob Herring (Arm) <[email protected]>
---
 .../devicetree/bindings/thermal/mediatek,lvts-thermal.yaml     | 1 +
 include/dt-bindings/thermal/mediatek,lvts-thermal.h            | 3 +++
 2 files changed, 4 insertions(+)
Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml +1 -0
index 0259cd3ce9c5..a9befb523fd4 100644
@@ -18,6 +18,7 @@ description: |
 properties:
   compatible:
     enum:
+      - mediatek,mt7987-lvts-ap
       - mediatek,mt7988-lvts-ap
       - mediatek,mt8186-lvts
       - mediatek,mt8188-lvts-ap
include/dt-bindings/thermal/mediatek,lvts-thermal.h +3 -0
index ddc7302a510a..e9780edcd26c 100644
@@ -7,6 +7,9 @@
 #ifndef __MEDIATEK_LVTS_DT_H
 #define __MEDIATEK_LVTS_DT_H
 
+#define MT7987_CPU		0
+#define MT7987_ETH2P5G		1
+
 #define MT7988_CPU_0		0
 #define MT7988_CPU_1		1
 #define MT7988_ETH2P5G_0	2
Signature · 1 line
2.43.0
#2 lore raw

Re: [PATCH v2 1/2] dt-bindings: thermal: mediatek: Add LVTS thermal controller definition for MT7987

Hi,

just a friendly reminder for this series

regards Frank

Am 23.12.25 um 18:56 schrieb Frank Wunderlich:

Quoted 37 lines

From: Frank Wunderlich <[email protected]>

Add thermal controller definition for MT7987.

Signed-off-by Frank Wunderlich <[email protected]>
Acked-by Rob Herring (Arm) <[email protected]>
---
  .../devicetree/bindings/thermal/mediatek,lvts-thermal.yaml     | 1 +
  include/dt-bindings/thermal/mediatek,lvts-thermal.h            | 3 +++
  2 files changed, 4 insertions(+)
Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml +1 -0
index 0259cd3ce9c5..a9befb523fd4 100644
@@ -18,6 +18,7 @@ description: |
  properties:
    compatible:
      enum:
+      - mediatek,mt7987-lvts-ap
        - mediatek,mt7988-lvts-ap
        - mediatek,mt8186-lvts
        - mediatek,mt8188-lvts-ap
include/dt-bindings/thermal/mediatek,lvts-thermal.h +3 -0
index ddc7302a510a..e9780edcd26c 100644
@@ -7,6 +7,9 @@
  #ifndef __MEDIATEK_LVTS_DT_H
  #define __MEDIATEK_LVTS_DT_H
 
+#define MT7987_CPU		0
+#define MT7987_ETH2P5G		1
+
  #define MT7988_CPU_0		0
  #define MT7988_CPU_1		1
  #define MT7988_ETH2P5G_0	2
author
#3 lore raw

PATCH v2 2/2 thermal/drivers/mediatek/lvts_thermal: Add mt7987 support

In reply to Frank Wunderlich

From: Frank Wunderlich <[email protected]>

Add support for MT7987.

Signed-off-by Frank Wunderlich <[email protected]>

---
v2:
- drop irq-enable member
- move mt7987 above mt7988

---
 drivers/thermal/mediatek/lvts_thermal.c | 36 +++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
drivers/thermal/mediatek/lvts_thermal.c +36 -0
index ab55b20cda47..c345a6191715 100644
@@ -85,6 +85,8 @@
 #define LVTS_GOLDEN_TEMP_DEFAULT	50
 #define LVTS_COEFF_A_MT8195			-250460
 #define LVTS_COEFF_B_MT8195			250460
+#define LVTS_COEFF_A_MT7987			-204650
+#define LVTS_COEFF_B_MT7987			204650
 #define LVTS_COEFF_A_MT7988			-204650
 #define LVTS_COEFF_B_MT7988			204650
 

@@ -1373,6 +1375,20 @@ static void lvts_remove(struct platform_device *pdev)
 		lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false);
 }
 
+static const struct lvts_ctrl_data mt7987_lvts_ap_data_ctrl[] = {
+	{
+		.lvts_sensor = {
+			{ .dt_id = MT7987_CPU,
+			  .cal_offsets = { 0x04, 0x05, 0x06 } },
+			{ .dt_id = MT7987_ETH2P5G,
+			  .cal_offsets = { 0x08, 0x09, 0x0a } },
+		},
+		VALID_SENSOR_MAP(1, 1, 0, 0),
+		.offset = 0x0,
+		.mode = LVTS_MSR_FILTERED_MODE,
+	},
+};
+
 static const struct lvts_ctrl_data mt7988_lvts_ap_data_ctrl[] = {
 	{
 		.lvts_sensor = {

@@ -1455,6 +1471,12 @@ static const u32 default_init_cmds[] = {
 	0xC10300FC, 0xC103009D, 0xC10300F1, 0xC10300E1
 };
 
+static const u32 mt7987_init_cmds[] = {
+	0xC1030300, 0xC1030420, 0xC1030500, 0xC10307A6, 0xC10308C7,
+	0xC103098D, 0xC1030C7C, 0xC1030AA8, 0xC10308CE, 0xC10308C7,
+	0xC1030B04, 0xC1030E01, 0xC10306B8
+};
+
 static const u32 mt7988_init_cmds[] = {
 	0xC1030300, 0xC1030420, 0xC1030500, 0xC10307A6, 0xC1030CFC,
 	0xC1030A8C, 0xC103098D, 0xC10308F1, 0xC1030B04, 0xC1030E01,

@@ -1753,6 +1775,19 @@ static const struct lvts_ctrl_data mt8195_lvts_ap_data_ctrl[] = {
 	}
 };
 
+static const struct lvts_data mt7987_lvts_ap_data = {
+	.lvts_ctrl	= mt7987_lvts_ap_data_ctrl,
+	.num_lvts_ctrl	= ARRAY_SIZE(mt7987_lvts_ap_data_ctrl),
+	.conn_cmd	= mt7988_conn_cmds,
+	.init_cmd	= mt7987_init_cmds,
+	.num_conn_cmd	= ARRAY_SIZE(mt7988_conn_cmds),
+	.num_init_cmd	= ARRAY_SIZE(mt7987_init_cmds),
+	.temp_factor	= LVTS_COEFF_A_MT7987,
+	.temp_offset	= LVTS_COEFF_B_MT7987,
+	.gt_calib_bit_offset = 32,
+	.def_calibration = 19380,
+};
+
 static const struct lvts_data mt7988_lvts_ap_data = {
 	.lvts_ctrl	= mt7988_lvts_ap_data_ctrl,
 	.conn_cmd	= mt7988_conn_cmds,

@@ -1857,6 +1892,7 @@ static const struct lvts_data mt8195_lvts_ap_data = {
 };
 
 static const struct of_device_id lvts_of_match[] = {
+	{ .compatible = "mediatek,mt7987-lvts-ap", .data = &mt7987_lvts_ap_data },
 	{ .compatible = "mediatek,mt7988-lvts-ap", .data = &mt7988_lvts_ap_data },
 	{ .compatible = "mediatek,mt8186-lvts", .data = &mt8186_lvts_data },
 	{ .compatible = "mediatek,mt8188-lvts-mcu", .data = &mt8188_lvts_mcu_data },
Signature · 1 line
2.43.0