[PATCH] power: supply: qcom_battmgr: Expose USB connector temperature

From: Konrad Dybcio

Date: Tue Oct 20 2026 - 10:25:01 EST


From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

The firmware is capable of reporting the temperature of the connector.
Expose it at the USB supply.

Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
---
Tested on Kodiak/FP5
---
drivers/power/supply/qcom_battmgr.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
index a7237ba09be1..9410a4a1387c 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -87,6 +87,7 @@ enum qcom_battmgr_variant {
#define USB_ADAP_TYPE 7
#define USB_MOISTURE_DET_EN 8
#define USB_MOISTURE_DET_STS 9
+#define USB_TEMP 10

#define BATTMGR_WLS_PROPERTY_GET 0x34
#define BATTMGR_WLS_PROPERTY_SET 0x35
@@ -298,6 +299,7 @@ struct qcom_battmgr_usb {
unsigned int current_max;
unsigned int current_limit;
unsigned int usb_type;
+ int temperature;
};

struct qcom_battmgr_wireless {
@@ -977,6 +979,7 @@ static const u8 sm8350_usb_prop_map[] = {
[POWER_SUPPLY_PROP_CURRENT_MAX] = USB_CURR_MAX,
[POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT] = USB_INPUT_CURR_LIMIT,
[POWER_SUPPLY_PROP_USB_TYPE] = USB_TYPE,
+ [POWER_SUPPLY_PROP_TEMP] = USB_TEMP,
};

static int qcom_battmgr_usb_sm8350_update(struct qcom_battmgr *battmgr,
@@ -1037,6 +1040,9 @@ static int qcom_battmgr_usb_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_USB_TYPE:
val->intval = battmgr->usb.usb_type;
break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = battmgr->usb.temperature;
+ break;
default:
return -EINVAL;
}
@@ -1074,6 +1080,7 @@ static const enum power_supply_property sm8350_usb_props[] = {
POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
POWER_SUPPLY_PROP_USB_TYPE,
+ POWER_SUPPLY_PROP_TEMP,
};

static const struct power_supply_desc sm8350_usb_psy_desc = {
@@ -1517,6 +1524,10 @@ static void qcom_battmgr_sm8350_callback(struct qcom_battmgr *battmgr,
case USB_TYPE:
battmgr->usb.usb_type = le32_to_cpu(resp->intval.value);
break;
+ case USB_TEMP:
+ battmgr->usb.temperature =
+ DIV_ROUND_CLOSEST((int)le32_to_cpu(resp->intval.value), 10);
+ break;
default:
dev_warn(battmgr->dev, "unknown property %#x\n", property);
break;

---
base-commit: 2efb7a11f1aa4d2dc285fe2680cca22cb9f72f64
change-id: 20261020-topic-usb_temp-3d56ecc9c658

Best regards,
--
Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>