linux-kernel - [PATCH v4 1/3] dt-bindings: power: supply: Add Richtek RT9759 smart cap divider charger

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Message-ID: <1675647919-11151-2-git-send-email-cy_huang@richtek.com>
Date:   Mon, 6 Feb 2023 09:45:17 +0800
From:   <cy_huang@...htek.com>
To:     <sre@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>
CC:     <cy_huang@...htek.com>, <allen_chiang@...htek.com>,
        <u0084500@...il.com>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v4 1/3] dt-bindings: power: supply: Add Richtek RT9759 smart cap divider charger

From: ChiYuan Huang <cy_huang@...htek.com>

Add bindings for the Richtek RT9759 smart cap divider charger.

Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
Since v2
- Add Reviewed-by tag for dt-binding patch

---
 .../bindings/power/supply/richtek,rt9759.yaml      | 61 ++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/richtek,rt9759.yaml

diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt9759.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt9759.yaml
new file mode 100644
index 00000000..04fc6b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/richtek,rt9759.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/richtek,rt9759.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9759 Smart Cap Divider Charger
+
+maintainers:
+  - ChiYuan Huang <cy_huang@...htek.com>
+
+description: |
+  The RT9759 is a high efficiency and high charge current charger.
+  The efficiency is up to 97.8% when VBAT = 4.2V, IBAT = 2.5A and the maximum
+  charge current is up to 8A. The device integrates smart cap divider topology
+  with dual phase charge pump core. The ADCs provide input and output voltage,
+  current and temperature information to monitor the whole charging process.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RT9759/DS9759-02.pdf
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt9759
+
+  reg:
+    maxItems: 1
+
+  wakeup-source: true
+
+  interrupts:
+    maxItems: 1
+
+  shunt-resistor-micro-ohms:
+    description: Battery current sense resistor mounted.
+    default: 2000
+
+required:
+  - compatible
+  - reg
+  - wakeup-source
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      charger@66 {
+        compatible = "richtek,rt9759";
+        reg = <0x66>;
+        wakeup-source;
+        interrupts-extended = <&gpio_intc 32 IRQ_TYPE_EDGE_FALLING>;
+        shunt-resistor-micro-ohms = <5000>;
+      };
+    };
-- 
2.7.4