[PATCHv1 01/11] dt-bindings: power: supply: adc-battery: add binding

[Sebastian Reichel <sre@kernel.org>]

Add binding for a battery that is only monitored via ADC
channels and simple status GPIOs.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
---
 .../bindings/power/supply/adc-battery.yaml    | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/adc-battery.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/adc-battery.yaml b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml
new file mode 100644
index 000000000000..9d478bf9d2ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/adc-battery.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ADC battery
+
+maintainers:
+  - Sebastian Reichel <sre@kernel.org>
+
+description: |
+  Basic Battery, which only reports (in circuit) voltage and optionally
+  current via an ADC channel.
+
+allOf:
+  - $ref: power-supply.yaml#
+
+properties:
+  compatible:
+    const: adc-battery
+
+  charged-gpios:
+    description:
+      GPIO which signals that the battery is fully charged.
+    maxItems: 1
+
+  io-channels:
+    minItems: 1
+    maxItems: 3
+
+  io-channel-names:
+    oneOf:
+      - const: voltage
+      - items:
+          - const: voltage
+          - enum:
+              - current
+              - power
+      - items:
+          - const: voltage
+          - const: current
+          - const: power
+
+  monitored-battery: true
+
+required:
+  - compatible
+  - io-channels
+  - io-channel-names
+  - monitored-battery
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    fuel-gauge {
+        compatible = "adc-battery";
+        charged-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+        io-channels = <&adc 13>, <&adc 37>;
+        io-channel-names = "voltage", "current";
+
+        power-supplies = <&charger>;
+        monitored-battery = <&battery>;
+    };
-- 
2.39.2