linux-kernel - [PATCH v1 1/2] dt-bindings: power: supply: Document Maxim MAX8971 charger

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Message-ID: <20250221095943.57297-2-clamor95@gmail.com>
Date: Fri, 21 Feb 2025 11:59:42 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: Sebastian Reichel <sre@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Svyatoslav Ryhel <clamor95@...il.com>
Cc: linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/2] dt-bindings: power: supply: Document Maxim MAX8971 charger

Add bindings for Maxim MAX8971 charger.

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
---
 .../bindings/power/supply/maxim,max8971.yaml  | 133 ++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml b/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml
new file mode 100644
index 000000000000..26b37e6f662f
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml
@@ -0,0 +1,133 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/maxim,max8971.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX8971 IC charger
+
+maintainers:
+  - Svyatoslav Ryhel <clamor95@...il.com>
+
+description:
+  The MAX8971 is a compact, high-frequency, high-efficiency switch-mode
+  charger for a one-cell lithium-ion (Li+) battery.
+
+properties:
+  compatible:
+    const: maxim,max8971
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  extcon:
+    description:
+      Special device used to detect type of plug.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  maxim,fcharge-current-limit-microamp:
+    description:
+      Fast-Charge current limit
+    minimum: 250000
+    default: 500000
+    maximum: 1550000
+
+  maxim,fcharge-timer-hours:
+    description: |
+      Fast-Charge timer in hours. Setting this value 3 and lower or 11 and
+      higher will disable Fast-Charge timer.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 5
+
+  maxim,fcharge-rst-threshold-high:
+    description:
+      Set Fast-Charge reset threshold to -100 mV
+    type: boolean
+
+  maxim,in-current-limit-microamp:
+    description:
+      Input current limit
+    minimum: 100000
+    default: 500000
+    maximum: 1500000
+
+  maxim,topoff-timer-minutes:
+    description:
+      Top-Off timer minutes
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 10, 20, 30, 40, 50, 60, 70]
+    default: 30
+
+  maxim,topoff-current-threshold-microamp:
+    description:
+      Top-Off current threshold
+    enum: [50000, 100000, 150000, 200000]
+    default: 50000
+
+  maxim,fcharge-usb-current-limit-microamp:
+    description:
+      Fast-Charge USB current limit
+    minimum: 100000
+    default: 500000
+    maximum: 1500000
+
+  maxim,fcharge-ac-current-limit-microamp:
+    description:
+      Fast-Charge AC current limit
+    minimum: 100000
+    default: 500000
+    maximum: 1500000
+
+  maxim,usb-in-current-limit-microamp:
+    description:
+      USB Input current limit
+    minimum: 100000
+    default: 500000
+    maximum: 1500000
+
+  maxim,ac-in-current-limit-microamp:
+    description:
+      AC Input current limit
+    minimum: 100000
+    default: 500000
+    maximum: 1500000
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        charger@35 {
+            compatible = "maxim,max8971";
+            reg = <0x35>;
+
+            interrupt-parent = <&gpio>;
+            interrupts = <74 IRQ_TYPE_LEVEL_LOW>;
+
+            maxim,fcharge-ac-current-limit-microamp = <900000>;
+            maxim,fcharge-timer-hours = <0>;
+
+            maxim,fcharge-rst-threshold-high;
+            maxim,ac-in-current-limit-microamp = <1200000>;
+
+            maxim,topoff-timer-minutes = <0>;
+            maxim,topoff-current-threshold-microamp = <200000>;
+
+            extcon = <&extcon>;
+        };
+    };
+...
-- 
2.43.0