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Message-Id: <20230915-pm8916-bms-lbc-v3-1-f30881e951a0@trvn.ru>
Date: Fri, 15 Sep 2023 10:01:18 +0500
From: Nikita Travkin <nikita@...n.ru>
To: Sebastian Reichel <sre@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
Nikita Travkin <nikita@...n.ru>, Rob Herring <robh@...nel.org>
Subject: [PATCH v3 1/4] dt-bindings: power: supply: Add pm8916 VM-BMS
Qualcomm Voltage Mode BMS is a battery monitoring block in PM8916 PMIC.
Document it's DT binding.
Signed-off-by: Nikita Travkin <nikita@...n.ru>
Reviewed-by: Rob Herring <robh@...nel.org>
---
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@...n.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@...0 {
+ 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
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