linux-kernel - [PATCH v5 1/2] dt-bindings: power: supply: Add STC3117 Fuel Gauge

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241129114200.13351-2-bhavin.sharma@siliconsignals.io>
Date: Fri, 29 Nov 2024 17:10:45 +0530
From: Bhavin Sharma <bhavin.sharma@...iconsignals.io>
To: sre@...nel.org,
	krzk+dt@...nel.org
Cc: Bhavin Sharma <bhavin.sharma@...iconsignals.io>,
	Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 1/2] dt-bindings: power: supply: Add STC3117 Fuel Gauge

The STC3117 provides a simple fuel gauge via I2C.
Add a DT schema to describe how to set it up in the device tree.

Signed-off-by: Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>
Signed-off-by: Bhavin Sharma <bhavin.sharma@...iconsignals.io>
---
 .../bindings/power/supply/st,stc3117.yaml     | 81 +++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/st,stc3117.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml b/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml
new file mode 100644
index 000000000000..274e57be4bc6
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/st,stc3117.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/st,stc3117.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STC3117 Fuel Gauge Unit Power Supply
+
+maintainers:
+  - Hardevsinh Palaniya <hardevsinh.palaniya@...iconsignals.io>
+  - Bhavin Sharma <bhavin.sharma@...iconsignals.io>
+
+description: |
+  The STC3117 includes the STMicroelectronics OptimGauge algorithm.
+  It provides accurate battery state-of-charge (SOC) monitoring, tracks
+  battery parameter changes with operation conditions, temperature,
+  and aging, and allows the application to get a battery state-of-health
+  (SOH) indication.
+
+  An alarm output signals low SOC or low voltage conditions and also
+  indicates fault conditions like a missing or swapped battery.
+
+  Datasheet is available at
+  https://www.st.com/resource/en/datasheet/stc3117.pdf
+
+allOf:
+  - $ref: power-supply.yaml#
+
+properties:
+  compatible:
+    enum:
+      - st,stc3117
+
+  reg:
+    maxItems: 1
+
+  monitored-battery:
+    description: |
+      The fuel gauge uses the following battery properties:
+      - charge-full-design-microamp-hours
+      - voltage-min-design-microvolt
+      - voltage-max-design-microvolt
+
+  sense-resistor:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Current sense resistor in milliohms
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - monitored-battery
+  - sense-resistor
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      bat: battery {
+        compatible = "simple-battery";
+        charge-full-design-microamp-hours = <2600000>;
+        voltage-min-design-microvolt = <3300000>;
+        voltage-max-design-microvolt = <4250000>;
+      };
+
+      battery@70 {
+        compatible = "st,stc3117";
+        reg = <0x70>;
+        interrupt-parent = <&gpio0>;
+        interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
+        monitored-battery = <&bat>;
+        sense-resistor = <10>;
+      };
+    };
-- 
2.43.0