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From:   Nikita Travkin <nikita@trvn.ru>
Date:   Mon, 31 Jul 2023 22:06:24 +0500
Subject: [PATCH v2 1/4] dt-bindings: power: supply: Add pm8916 VM-BMS
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Message-Id: <20230731-pm8916-bms-lbc-v2-1-82a4ebb39c16@trvn.ru>
References: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru>
In-Reply-To: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru>
To:     Sebastian Reichel <sre@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>
Cc:     linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        Nikita Travkin <nikita@trvn.ru>
Precedence: bulk

Qualcomm Voltage Mode BMS is a battery monitoring block in PM8916 PMIC.
Document it's DT binding.

Signed-off-by: Nikita Travkin <nikita@trvn.ru>
---
v2: Describe all interrupts. (Conor)
---
 .../bindings/power/supply/qcom,pm8916-bms-vm.yaml  | 83 ++++++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml
new file mode 100644
index 000000000000..ad764e69ab57
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/qcom,pm8916-bms-vm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Voltage Mode BMS
+
+maintainers:
+  - Nikita Travkin <nikita@trvn.ru>
+
+description:
+  Voltage Mode BMS is a hardware block found in some Qualcomm PMICs
+  such as pm8916. This block performs battery voltage monitoring.
+
+allOf:
+  - $ref: power-supply.yaml#
+
+properties:
+  compatible:
+    const: qcom,pm8916-bms-vm
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: BMS FSM left S3 mode
+      - description: BMS FSM entered S2 mode
+      - description: OCV measured in S3 mode
+      - description: OCV below threshold
+      - description: FIFO update done
+      - description: BMS FSM switched state
+
+  interrupt-names:
+    items:
+      - const: cv_leave
+      - const: cv_enter
+      - const: ocv_good
+      - const: ocv_thr
+      - const: fifo
+      - const: state_chg
+
+  monitored-battery: true
+
+  power-supplies: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - monitored-battery
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pmic {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      battery@4000 {
+        compatible = "qcom,pm8916-bms-vm";
+        reg = <0x4000>;
+        interrupts = <0x0 0x40 0 IRQ_TYPE_EDGE_RISING>,
+                     <0x0 0x40 1 IRQ_TYPE_EDGE_RISING>,
+                     <0x0 0x40 2 IRQ_TYPE_EDGE_RISING>,
+                     <0x0 0x40 3 IRQ_TYPE_EDGE_RISING>,
+                     <0x0 0x40 4 IRQ_TYPE_EDGE_RISING>,
+                     <0x0 0x40 5 IRQ_TYPE_EDGE_RISING>;
+        interrupt-names = "cv_leave",
+                          "cv_enter",
+                          "ocv_good",
+                          "ocv_thr",
+                          "fifo",
+                          "state_chg";
+
+        monitored-battery = <&battery>;
+        power-supplies = <&pm8916_charger>;
+      };
+    };

-- 
2.41.0