linux-kernel - [PATCH 2/4] dt-bindings: iio: magnetometer: Add DT binding for Voltafield AF8133J

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Message-ID: <20240211205211.2890931-3-megi@xff.cz>
Date: Sun, 11 Feb 2024 21:51:58 +0100
From: Ondřej Jirman <megi@....cz>
To: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Andrey Skvortsov <andrej.skvortzov@...il.com>
Cc: Icenowy Zheng <icenowy@...c.io>,
	linux-iio@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ondřej Jirman <megi@....cz>
Subject: [PATCH 2/4] dt-bindings: iio: magnetometer: Add DT binding for Voltafield AF8133J

From: Icenowy Zheng <icenowy@...c.io>

Voltafield AF8133J is a simple magnetometer sensor produced by Voltafield
Technology Corp, with dual power supplies (one for core and one for I/O)
and active-low reset pin.

The sensor has configurable range 1.2 - 2.2 mT and a software controlled
standby mode.

Add a device tree binding for it.

Signed-off-by: Icenowy Zheng <icenowy@...c.io>
Signed-off-by: Ondřej Jirman <megi@....cz>
---
 .../iio/magnetometer/voltafield,af8133j.yaml  | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/voltafield,af8133j.yaml

diff --git a/Documentation/devicetree/bindings/iio/magnetometer/voltafield,af8133j.yaml b/Documentation/devicetree/bindings/iio/magnetometer/voltafield,af8133j.yaml
new file mode 100644
index 000000000000..ab56c0f798ad
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/magnetometer/voltafield,af8133j.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/magnetometer/voltafield,af8133j.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Voltafield AF8133J magnetometer sensor
+
+maintainers:
+  - Ondřej Jirman <megi@....cz>
+
+properties:
+  compatible:
+    - voltafield,af8133j
+
+  reg:
+    maxItems: 1
+
+  reset-gpios:
+    description: |
+      an pin needed for AF8133J to set the reset state. This should be usually
+      active low.
+
+  avdd-supply:
+    description: |
+      an optional regulator that needs to be on to provide AVDD power (Working
+      power, usually 3.3V) to the sensor.
+
+  dvdd-supply:
+    description: |
+      an optional regulator that needs to be on to provide DVDD power (Digital
+      IO power, 1.8V~AVDD) to the sensor.
+
+  mount-matrix:
+    description: an optional 3x3 mounting rotation matrix.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@1c {
+            compatible = "voltafield,af8133j";
+            reg = <0x1c>;
+            avdd-supply = <&reg_dldo1>;
+            dvdd-supply = <&reg_dldo1>;
+            reset-gpios = <&pio 1 1 GPIO_ACTIVE_LOW>;
+        };
+    };
-- 
2.43.0