linux-kernel - [PATCH v4 2/2] dt-bindings: hwmon: add renesas,isl28022

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Date:   Thu, 17 Aug 2023 16:29:21 +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>,
        Jonathan Corbet <corbet@....net>,
        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-doc@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org
Subject: [PATCH v4 2/2] dt-bindings: hwmon: add renesas,isl28022

Add dt-bindings for Renesas ISL28022 power monitor.

Signed-off-by: Carsten Spieß <mail@...sten-spiess.de>
---
v4:
- compatible enum replaced by const
- unneeded literal style removed
v3:
- changelog added
v2/v3:
- schema errors fixed
- properties reworked
- shunt-resistor minimum and default value added
---
 .../bindings/hwmon/renesas,isl28022.yaml      | 64 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 65 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..dd82a80e4115
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/renesas,isl28022.yaml
@@ -0,0 +1,64 @@
+# 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
+
+properties:
+  compatible:
+    const: renesas,isl28022
+
+  reg:
+    maxItems: 1
+
+  shunt-resistor-micro-ohms:
+    description:
+      Shunt resistor value in micro-Ohm
+    minimum: 800
+    default: 10000
+
+  renesas,shunt-range-microvolt:
+    description:
+      Maximal shunt voltage range of +/- 40 mV, 80 mV, 160 mV or 320 mV
+    default: 320000
+    enum: [40000, 80000, 160000, 320000]
+
+  renesas,average-samples:
+    description:
+      Number of samples to be used to report voltage, current and power values.
+    default: 1
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [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 = <0x40>;
+            shunt-resistor-micro-ohms = <8000>;
+            renesas,shunt-range-microvolt = <40000>;
+            renesas,average-samples = <128>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index b02e3b991676..23b8e8183ece 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11069,6 +11069,7 @@ 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