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Message-Id: <20240703-iio-pac1921-v1-1-54c47d9180b6@gmail.com>
Date: Wed, 03 Jul 2024 15:34:35 +0200
From: Matteo Martelli <matteomartelli3@...il.com>
To: Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Matteo Martelli <matteomartelli3@...il.com>
Subject: [PATCH 1/2] dt-bindings: iio: adc: add binding for pac1921
Add binging for Microchip PAC1921 Power/Current monitor
Signed-off-by: Matteo Martelli <matteomartelli3@...il.com>
---
.../bindings/iio/adc/microchip,pac1921.yaml | 79 ++++++++++++++++++++++
1 file changed, 79 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml
new file mode 100644
index 000000000000..ec08228dcc16
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/microchip,pac1921.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/microchip,pac1921.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip PAC1921 High-Side Power/Current Monitor with Anaog Output
+
+maintainers:
+ - Matteo Martelli <matteomartelli3@...il.com>
+
+description: |
+ The PAC1921 is a power/current monitoring device with an analog output
+ and I2C/SMBus interface.
+
+ Datasheet can be found here:
+ https://ww1.microchip.com/downloads/en/DeviceDoc/PAC1921-Data-Sheet-DS20005293E.pdf
+
+properties:
+ compatible:
+ const: microchip,pac1921
+
+ reg:
+ maxItems: 1
+
+ "#io-channel-cells":
+ const: 1
+
+ shunt-resistor-micro-ohms:
+ description:
+ Value in micro Ohms of the shunt resistor connected between
+ the SENSE+ and SENSE- inputs, across which the current is measured.
+ Value is needed to compute the scaling of the measured current.
+
+ label:
+ description: Unique name to identify which device this is.
+
+ microchip,dv-gain:
+ description:
+ Digital multiplier to control the effective bus voltage gain. The gain
+ value of 1 is the setting for the full-scale range and it can be increased
+ when the system is designed for a lower VBUS range.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4, 8, 16, 32]
+ default: 1
+
+ microchip,di-gain:
+ description:
+ Digital multiplier to control the effective current gain. The gain
+ value of 1 is the setting for the full-scale range and it can be
+ increased when the system is designed for a lower VSENSE range.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4, 8, 16, 32, 64, 128]
+ default: 1
+
+required:
+ - compatible
+ - reg
+ - shunt-resistor-micro-ohms
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@4c {
+ compatible = "microchip,pac1921";
+ #io-channel-cells = <1>;
+ label = "vbat";
+ reg = <0x4c>;
+ shunt-resistor-micro-ohms = <10000>;
+ microchip,dv-gain = <4>;
+ microchip,di-gain = <32>;
+ };
+ };
+...
--
2.45.1
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