linux-kernel - [PATCH 2/2] dt-bindings: hwmon: add renesas,isl28022

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Message-Id: <20230726152235.249569-3-mail@carsten-spiess.de>
Date:   Wed, 26 Jul 2023 17:22:34 +0200
From:   Carsten Spieß <mail@...sten-spiess.de>
To:     Carsten Spieß <mail@...sten-spiess.de>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>
Cc:     linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: hwmon: add renesas,isl28022

Add dt-bindings for Renesase ISL28022 power monitor.

Signed-off-by: Carsten Spieß <mail@...sten-spiess.de>
---
 .../bindings/hwmon/renesas,isl28022.yaml      | 67 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml b/Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml
new file mode 100644
index 000000000000..5ecf892db269
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/renesas,isl28022.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas ISL28022 power monitor
+
+maintainers:
+  - Carsten Spieß <mail@...sten-spiess.de>
+
+description: |
+  The ISL28022 is a power monitor with I2C interface. The device monitors
+  voltage, current via shunt resistor and calculated power.
+
+  Datasheets:
+    https://www.renesas.com/us/en/www/doc/datasheet/isl28022.pdf
+
+Required properties:
+  compatible:
+    enum:
+      - renesas,isl28022
+
+  reg:
+    maxItems: 1
+
+Optional properties:
+  shunt-resistor-micro-ohms:
+    description:
+      Shunt resistor value in micro-Ohm
+      defaults to <0> when not set
+      monitoring of current and power not supported when <0>
+
+  shunt-gain:
+    description:
+      Shunt gain to scale maximal shunt voltage to
+      40mV, 80mV, 160mV, 320mV
+      defaults to <8> (320mV) when not set
+    enum: [1, 2, 4, 8]
+
+  average:
+    description: |
+      Number of samples to be used to report voltage, current and power values.
+      defaults to <0> when not set
+    enum: [0, 1, 2, 4, 8, 16, 32, 64, 128]
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        power-monitor@40 {
+            compatible = "renesas,isl28022";
+            reg = <0x10>;
+            shunt-resistor-micro-ohms = <8000>;
+            shunt-gain = <1>;
+            average = <128>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index c61aa688cd11..ec9b97ace50b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11076,6 +11076,7 @@ ISL28022 HARDWARE MONITORING DRIVER
 M:	Carsten Spieß <mail@...sten-spiess.de>
 L:	linux-hwmon@...r.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml
 F:	Documentation/hwmon/isl28022.rst
 F:	drivers/hwmon/isl28022.c
 
-- 
2.34.1