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From:   cy_huang <u0084500@gmail.com>
To:     jic23@kernel.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org
Cc:     lars@metafoo.de, cy_huang@richtek.com, linux-iio@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: [PATCH 1/2] dt-bindings: iio: adc: Add rtq6056 adc support
Date:   Fri, 17 Jun 2022 17:32:54 +0800
Message-Id: <1655458375-30478-2-git-send-email-u0084500@gmail.com>
In-Reply-To: <1655458375-30478-1-git-send-email-u0084500@gmail.com>
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From: ChiYuan Huang <cy_huang@richtek.com>

Add the documentation for Richtek RTQ6056.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
---
 .../bindings/iio/adc/richtek,rtq6056-adc.yaml      | 57 ++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/richtek,rtq6056-adc.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056-adc.yaml b/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056-adc.yaml
new file mode 100644
index 00000000..6b4e0e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/richtek,rtq6056-adc.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/richtek,rtq6056-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RTQ6056 Bi-Directional Current and Power Monitor with 16-bit ADC
+
+maintainers:
+  - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+  The RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus
+  interface, and the device provides full information for system by reading
+  out the loading current and power.
+
+  The device monitors both of the drops across sense resistor and the BUS
+  voltage, converts into the current in amperes, and power in watts through
+  internal analog-to-digital converter ADC. The programmable calibration,
+  adjustable conversion time, and averaging function are also built in for
+  more design flexibility.
+
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+
+properties:
+  compatible:
+    const: richtek,rtq6056
+
+  reg:
+    maxItems: 1
+
+  "#io-channel-cells":
+    const: 1
+
+  richtek,shunt-resistor-uohm:
+    description: Shunt IN+/IN- sensing node resistor in microohm.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - reg
+  - "#io-channel-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      rtq6056@40 {
+        compatible = "richtek,rtq6056";
+        reg = <0x40>;
+        #io-channel-cells = <1>;
+      };
+    };
-- 
2.7.4