[PATCH v2 1/2] dt-bindings: iio: magnetometer: add MEMSIC MMC5983MA

[Vladislav Kulikov <vlad.kulikov.c@gmail.com>]

Add a Devicetree binding for the MEMSIC MMC5983MA 3-axis
magnetometer.

MMC5983MA is not register-compatible with the existing MEMSIC
magnetometer drivers. It has a different register map, 18-bit output
data format, and I2C/SPI transport support.

Signed-off-by: Vladislav Kulikov <vlad.kulikov.c@gmail.com>
---
 .../iio/magnetometer/memsic,mmc5983.yaml      | 65 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/magnetometer/memsic,mmc5983.yaml

diff --git a/Documentation/devicetree/bindings/iio/magnetometer/memsic,mmc5983.yaml b/Documentation/devicetree/bindings/iio/magnetometer/memsic,mmc5983.yaml
new file mode 100644
index 000000000000..e144b4d9b0ca
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/magnetometer/memsic,mmc5983.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/magnetometer/memsic,mmc5983.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MEMSIC MMC5983MA 3-axis magnetic sensor
+
+maintainers:
+  - Vladislav Kulikov <vlad.kulikov.c@gmail.com>
+
+properties:
+  compatible:
+    const: memsic,mmc5983
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vdd-supply:
+    description: Regulator that provides power to the sensor
+
+  vddio-supply:
+    description: Regulator that provides power to the digital interface and INT pin
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    // Example for I2C
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@30 {
+            compatible = "memsic,mmc5983";
+            reg = <0x30>;
+            vdd-supply = <&vdd_3v3_reg>;
+            vddio-supply = <&vdd_3v3_reg>;
+        };
+    };
+  - |
+    // Example for SPI
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        magnetometer@0 {
+            compatible = "memsic,mmc5983";
+            reg = <0>;
+            spi-max-frequency = <10000000>;
+            vdd-supply = <&vdd_3v3_reg>;
+            vddio-supply = <&vdd_3v3_reg>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 882214b0e7db..952fbf3020a4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -17170,6 +17170,12 @@ F:	drivers/mtd/
 F:	include/linux/mtd/
 F:	include/uapi/mtd/
 
+MEMSIC MMC5983 MAGNETOMETER DRIVER
+M:	Vladislav Kulikov <vlad.kulikov.c@gmail.com>
+L:	linux-iio@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/iio/magnetometer/memsic,mmc5983.yaml
+
 MEN A21 WATCHDOG DRIVER
 M:	Johannes Thumshirn <morbidrsa@gmail.com>
 L:	linux-watchdog@vger.kernel.org
-- 
2.43.0