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hwmon: Add Qualcomm SPMI BCL driver #892

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7d3015e
Revert "QCLINUX: defconfig: Enable Qualcomm BCL driver"
dmantre Aug 3, 2026
b119541
Revert "FROMLIST: arm64: dts: qcom: pm8350c: Enable Qualcomm BCL device"
dmantre Aug 3, 2026
3cc6bac
Revert "FROMLIST: arm64: dts: qcom: pm7250b: Enable Qualcomm BCL device"
dmantre Aug 3, 2026
363c3dc
Revert "FROMLIST: hwmon: Add Qualcomm PMIC BCL hardware monitor driver"
dmantre Aug 3, 2026
5c91732
Revert "FROMLIST: dt-bindings: hwmon: Add qcom,bcl-hwmon yaml bindings"
dmantre Aug 3, 2026
7af1b91
FROMLIST: dt-bindings: hwmon: Describe Qualcomm BCL hardware
quic-manafm Jul 21, 2026
62d0145
FROMLIST: hwmon: Add Qualcomm PMIC BCL driver
quic-manafm Jul 21, 2026
a246a06
FROMLIST: arm64: dts: qcom: pm7250b: Enable BCL sensor node
quic-manafm Jul 21, 2026
5c0e532
FROMLIST: arm64: dts: qcom: hamoa-pmic: Enable BCL sensor node
quic-manafm Jul 21, 2026
756e342
FROMLIST: arm64: dts: qcom: pm8350c: Enable BCL sensor node
quic-manafm Jul 21, 2026
7b0ce04
FROMLIST: arm64: dts: qcom: pm8550: Enable BCL sensor node
quic-manafm Jul 21, 2026
1ecfd42
QCLINUX: defconfig: Enable Qualcomm BCL driver
dmantre Aug 3, 2026
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128 changes: 0 additions & 128 deletions Documentation/devicetree/bindings/hwmon/qcom,bcl-hwmon.yaml
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64 changes: 64 additions & 0 deletions Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml
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@@ -0,0 +1,64 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/hwmon/qcom,pm7250b-bcl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm SPMI PMIC Battery Current Limiting (BCL) Hardware Monitor

maintainers:
- Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>

description:
SPMI PMIC Battery Current Limiting (BCL) hardware provides monitoring and
alarm functionality for battery overcurrent and battery or system under
voltage conditions. It monitors battery voltage and current, and
can trigger interrupts when configurable thresholds are exceeded.

properties:
compatible:
enum:
- qcom,pm7250b-bcl
- qcom,pm8350c-bcl
- qcom,pm8550-bcl
- qcom,pmh0101-bcl
- qcom,pmih0108-bcl
- qcom,smb2360-bcl
- qcom,smb2370-bcl

reg:
maxItems: 1

interrupts:
maxItems: 2

interrupt-names:
items:
- const: max-min
- const: critical

required:
- compatible
- reg
- interrupts
- interrupt-names

additionalProperties: false

examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>

pmic {
#address-cells = <1>;
#size-cells = <0>;

sensor@1d00 {
compatible = "qcom,pm7250b-bcl";
reg = <0x1d00>;
interrupts = <0x2 0x1d 0x0 IRQ_TYPE_EDGE_RISING>,
<0x2 0x1d 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "max-min",
"critical";
};
};
2 changes: 1 addition & 1 deletion Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml
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Expand Up @@ -187,7 +187,7 @@ patternProperties:

"^sensor@[0-9a-f]+$":
type: object
$ref: /schemas/hwmon/qcom,bcl-hwmon.yaml#
$ref: /schemas/hwmon/qcom,pm7250b-bcl.yaml#

"^temp-alarm@[0-9a-f]+$":
type: object
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5 changes: 2 additions & 3 deletions MAINTAINERS
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Expand Up @@ -21092,14 +21092,13 @@ S: Maintained
F: Documentation/devicetree/bindings/net/qcom,bam-dmux.yaml
F: drivers/net/wwan/qcom_bam_dmux.c


QUALCOMM BCL HARDWARE MONITOR DRIVER
M: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>
L: linux-hwmon@vger.kernel.org
L: linux-arm-msm@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/hwmon/qcom,bcl-hwmon.yaml
F: drivers/hwmon/qcom-bcl-hwmon.c
F: drivers/hwmon/qcom-bcl-hwmon.h
F: Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml

QUALCOMM BLUETOOTH DRIVER
L: linux-arm-msm@vger.kernel.org
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9 changes: 9 additions & 0 deletions arch/arm64/boot/dts/qcom/hamoa-pmics.dtsi
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Expand Up @@ -495,6 +495,15 @@

status = "disabled";

sensor@4700 {
compatible = "qcom,smb2360-bcl";
reg = <0x4700>;
interrupts = <0x7 0x47 0x0 IRQ_TYPE_EDGE_RISING>,
<0x7 0x47 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "max-min",
"critical";
};

smb2360_0_eusb2_repeater: phy@fd00 {
compatible = "qcom,smb2360-eusb2-repeater";
reg = <0xfd00>;
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19 changes: 9 additions & 10 deletions arch/arm64/boot/dts/qcom/pm7250b.dtsi
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Expand Up @@ -90,6 +90,15 @@
status = "disabled";
};

sensor@1d00 {
compatible = "qcom,pm7250b-bcl";
reg = <0x1d00>;
interrupts = <PM7250B_SID 0x1d 0x0 IRQ_TYPE_EDGE_RISING>,
<PM7250B_SID 0x1d 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "max-min",
"critical";
};

pm7250b_temp: temp-alarm@2400 {
compatible = "qcom,spmi-temp-alarm";
reg = <0x2400>;
Expand Down Expand Up @@ -202,16 +211,6 @@
interrupt-controller;
#interrupt-cells = <2>;
};

sensor@1d00 {
compatible = "qcom,pm7250b-bcl", "qcom,bcl-v1";
reg = <0x1d00>;
interrupts = <PM7250B_SID 0x1d 0x0 IRQ_TYPE_EDGE_RISING>,
<PM7250B_SID 0x1d 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "bcl-max-min",
"bcl-critical";
overcurrent-thresholds-milliamp = <5500 6000>;
};
};

pmic@PM7250B_SID1 {
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17 changes: 9 additions & 8 deletions arch/arm64/boot/dts/qcom/pm8350c.dtsi
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Expand Up @@ -20,6 +20,15 @@
#thermal-sensor-cells = <0>;
};

sensor@4700 {
compatible = "qcom,pm8350c-bcl";
reg = <0x4700>;
interrupts = <0x2 0x47 0x0 IRQ_TYPE_EDGE_RISING>,
<0x2 0x47 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "max-min",
"critical";
};

pm8350c_gpios: gpio@8800 {
compatible = "qcom,pm8350c-gpio", "qcom,spmi-gpio";
reg = <0x8800>;
Expand All @@ -42,14 +51,6 @@
status = "disabled";
};

sensor@4700 {
compatible = "qcom,pm8350c-bcl", "qcom,bcl-v2";
reg = <0x4700>;
interrupts = <0x2 0x47 0x0 IRQ_TYPE_EDGE_RISING>,
<0x2 0x47 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "bcl-max-min",
"bcl-critical";
};
};
};

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9 changes: 9 additions & 0 deletions arch/arm64/boot/dts/qcom/pm8550.dtsi
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Expand Up @@ -45,6 +45,15 @@
#thermal-sensor-cells = <0>;
};

sensor@4700 {
compatible = "qcom,pm8550-bcl";
reg = <0x4700>;
interrupts = <0x1 0x47 0x0 IRQ_TYPE_EDGE_RISING>,
<0x1 0x47 0x1 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "max-min",
"critical";
};

pm8550_gpios: gpio@8800 {
compatible = "qcom,pm8550-gpio", "qcom,spmi-gpio";
reg = <0x8800>;
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2 changes: 1 addition & 1 deletion arch/arm64/configs/qcom.config
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Expand Up @@ -65,7 +65,7 @@ CONFIG_STM_SOURCE_FTRACE=m
CONFIG_STM_SOURCE_HEARTBEAT=m
CONFIG_SENSORS_AMC6821=y
CONFIG_SENSORS_EMC2305=y
CONFIG_SENSORS_QCOM_BCL=y
CONFIG_SENSORS_QCOM_SPMI_BCL=y

@shashim-quic Shiraz Hashim (shashim-quic) Aug 6, 2026

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Does this need to be =y ? or can be module as well ?

CONFIG_SWIOTLB_DYNAMIC=y
CONFIG_TRACE_MMIO_ACCESS=y
CONFIG_UCLAMP_TASK_GROUP=y
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6 changes: 4 additions & 2 deletions drivers/hwmon/Kconfig
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Expand Up @@ -1893,8 +1893,10 @@ config SENSORS_PWM_FAN
This driver can also be built as a module. If so, the module
will be called pwm-fan.

config SENSORS_QCOM_BCL
tristate "Qualcomm BCL hardware monitoring"
config SENSORS_QCOM_SPMI_BCL
tristate "Qualcomm SPMI BCL hardware monitoring"
depends on SPMI
select REGMAP_SPMI
help
Say yes here to enable support for Qualcomm battery over current
and under voltage alarms monitor.
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2 changes: 1 addition & 1 deletion drivers/hwmon/Makefile
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Expand Up @@ -196,7 +196,7 @@ obj-$(CONFIG_SENSORS_POWERZ) += powerz.o
obj-$(CONFIG_SENSORS_POWR1220) += powr1220.o
obj-$(CONFIG_SENSORS_PT5161L) += pt5161l.o
obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o
obj-$(CONFIG_SENSORS_QCOM_BCL) += qcom-bcl-hwmon.o
obj-$(CONFIG_SENSORS_QCOM_SPMI_BCL) += qcom-bcl-hwmon.o
obj-$(CONFIG_SENSORS_QNAP_MCU_HWMON) += qnap-mcu-hwmon.o
obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o
obj-$(CONFIG_SENSORS_SA67MCU) += sa67mcu-hwmon.o
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