[PATCH v2 01/10] dt-bindings: hwmon: Describe Qualcomm BCL hardware

[Manaf Meethalavalappu Pallikunhi]

Qualcomm SPMI PMIC BCL (Battery Current Limiting) is a safety feature
that monitors battery or system voltage and current to alert system
for overcurrent or undervoltage conditions.

It provides:
- Real-time voltage and current monitoring
- Configurable thresholds per channel
- Hardware interrupts when thresholds are violated

Add a DeviceTree binding to describe the BCL on Qualcomm's PMICs.

Add sensor type to SPMI device list for BCL device.

Signed-off-by: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@xxxxxxxxxxxxxxxx>
---
 .../bindings/hwmon/qcom,pm7250b-bcl.yaml           | 64 ++++++++++++++++++++++
 .../devicetree/bindings/mfd/qcom,spmi-pmic.yaml    |  4 ++
 MAINTAINERS                                        |  7 +++
 3 files changed, 75 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml b/Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml
new file mode 100644
index 000000000000..3c069e94a34e
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml
@@ -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@xxxxxxxxxxxxxxxx>
+
+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";
+        };
+    };
diff --git a/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml
index 809be2756a0c..3caee21a02ad 100644
--- a/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml
+++ b/Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml
@@ -190,6 +190,10 @@ patternProperties:
     type: object
     $ref: /schemas/rtc/qcom-pm8xxx-rtc.yaml#
 
+  "^sensor@[0-9a-f]+$":
+    type: object
+    $ref: /schemas/hwmon/qcom,pm7250b-bcl.yaml#
+
   "^temp-alarm@[0-9a-f]+$":
     type: object
     $ref: /schemas/thermal/qcom,spmi-temp-alarm.yaml#
diff --git a/MAINTAINERS b/MAINTAINERS
index 16b73f5825d6..1b178d3a91ad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22176,6 +22176,13 @@ 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@xxxxxxxxxxxxxxxx>
+L:	linux-hwmon@xxxxxxxxxxxxxxx
+L:	linux-arm-msm@xxxxxxxxxxxxxxx
+S:	Maintained
+F:	Documentation/devicetree/bindings/hwmon/qcom,pm7250b-bcl.yaml
+
 QUALCOMM BLUETOOTH DRIVER
 M:	Bartosz Golaszewski <brgl@xxxxxxxxxx>
 L:	linux-arm-msm@xxxxxxxxxxxxxxx

-- 
2.43.0