linux-kernel - [PATCH v2 1/3] dt-bindings: power: supply: Add Richtek RT9467 battery charger

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Date:   Wed,  5 Oct 2022 19:37:21 +0800
From:   ChiaEn Wu <peterwu.pub@...il.com>
To:     sre@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     chiaen_wu@...htek.com, cy_huang@...htek.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: [PATCH v2 1/3] dt-bindings: power: supply: Add Richtek RT9467 battery charger

From: ChiaEn Wu <chiaen_wu@...htek.com>

Add bindings for the Richtek RT9467 battery charger.

Co-developed-by: ChiYuan Huang <cy_huang@...htek.com>
Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
Signed-off-by: ChiaEn Wu <chiaen_wu@...htek.com>
---

v2
- Revise the definition of 'enable-gpios'
- Revise the node name to generic name in the example
  ('rt9467@5b' --> 'charger@5b')
- Revise the example usage of 'charge-enable-gpios' with GPIO flags
---
 .../power/supply/richtek,rt9467-charger.yaml       | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/richtek,rt9467-charger.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt9467-charger.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt9467-charger.yaml
new file mode 100644
index 0000000..92c5706
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/richtek,rt9467-charger.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/richtek,rt9467-charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9467 Switching Battery Charger with Power Path Management
+
+maintainers:
+  - ChiYuan Huang <cy_huang@...htek.com>
+  - ChiaEn Wu <chiaen_wu@...htek.com>
+
+description: |
+  RT9467 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for
+  portable applications. It integrates a synchronous PWM controller, power
+  MOSFETs, input current sensing and regulation, high-accuracy voltage
+  regulation, and charge termination. The charge current is regulated through
+  integrated sensing resistors.
+
+  The RT9467 also features USB On-The-Go (OTG) support. It also integrates
+  D+/D- pin for USB host/charging port detection.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RT9467/DS9467-01.pdf
+
+properties:
+  compatible:
+    const: richtek,rt9467-charger
+
+  reg:
+    maxItems: 1
+
+  wakeup-source: true
+
+  interrupts:
+    maxItems: 1
+
+  charge-enable-gpios:
+    description: GPIO is used to turn on and off charging.
+    maxItems: 1
+
+  usb-otg-vbus-regulator:
+    type: object
+    description: OTG boost regulator.
+    unevaluatedProperties: false
+    $ref: /schemas/regulator/regulator.yaml#
+
+    properties:
+      enable-gpios: true
+
+required:
+  - compatible
+  - reg
+  - wakeup-source
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      charger@5b {
+        compatible = "richtek,rt9467-charger";
+        reg = <0x5b>;
+        wakeup-source;
+        interrupts-extended = <&gpio_intc 32 IRQ_TYPE_LEVEL_LOW>;
+        charge-enable-gpios = <&gpio26 1 GPIO_ACTIVE_LOW>;
+
+        rt9467_otg_vbus: usb-otg-vbus-regulator {
+          regulator-name = "rt9467-usb-otg-vbus";
+          regulator-min-microvolt = <4425000>;
+          regulator-max-microvolt = <5825000>;
+          regulator-min-microamp = <500000>;
+          regulator-max-microamp = <3000000>;
+        };
+      };
+    };
-- 
2.7.4