boards: shields: introduce the Raspberry Pi Camera Module 2

Add a shield for the Raspberry Pi Camera Module 2, featuring the IMX219
sensor. This module is suitable for bot the "normal" and "No IR" (no
infra-red) variants and uses the 15-pin connector definition newly
introduced.

Signed-off-by: Josuah Demangeon <me@josuah.net>

Author: josuah

boards/shields/raspberry_pi_camera_module_2/Kconfig.shield

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+# Copyright (c) 2025 tinyVision.ai Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config SHIELD_RASPBERRY_PI_CAMERA_MODULE_2
+	def_bool $(shields_list_contains,raspberry_pi_camera_module_2)

boards/shields/raspberry_pi_camera_module_2/doc/index.rst

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+.. _raspberry_pi_camera_module_2:
+
+ST B-CAMS-IMX-MB1854
+####################
+
+Overview
+********
+
+The Raspberry Pi camera module 2 provides a Sony IMX219 rolling shutter in a module featuring a
+15-pin FFC connector popularized by Raspberry Pi, present on a wide range of boards.
+
+The NoIR variant is the same as the normal variant, except with the infra-red filter removed.
+
+.. figure:: rpi_cam_v2_normal.jpg
+   :width: 500px
+   :align: center
+   :alt: Raspberry Pi Camera Module 2
+
+   Raspberry Pi Camera Module 2, normal variant (Credit: Raspberry Pi.)
+
+.. figure:: rpi_cam_v2_noir.jpg
+   :width: 500px
+   :align: center
+   :alt: Raspberry Pi Camera Module 2 NoIR
+
+   Raspberry Pi Camera Module 2, NoIR variant (Credit: Raspberry Pi.)
+
+Requirements
+************
+
+The camera module is compatible with all boards featuring a 15 pins FFC connector and the necessary
+devicetree definitions.
+
+Usage
+*****
+
+The shield can be used in any application by setting ``SHIELD`` to
+``raspberry_pi_camera_module_2`` for boards with the necessary device tree node labels:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/drivers/video/capture
+   :board: stm32n6570_dk
+   :shield: raspberry_pi_camera_module_2
+   :goals: build
+
+References
+**********
+
+- `Product page <https://www.raspberrypi.com/products/camera-module-v2/>`_
+
+- `Product page (NoIR) <https://www.raspberrypi.com/products/pi-noir-camera-v2/>`_
+
+- `Datasheet <https://datasheets.raspberrypi.com/camera/camera-module-2-schematics.pdf>`_
+
+- `Mechanical drawing <https://datasheets.raspberrypi.com/camera/camera-module-2-mechanical-drawing.pdf>`_

boards/shields/raspberry_pi_camera_module_2/doc/rpi_cam_v2_noir.jpg

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+/*
+ * Copyright (c) 2025 tinyVision.ai Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/gpio/raspberrypi-csi-15pins-connector.h>
+#include <zephyr/dt-bindings/video/video-interfaces.h>
+
+/ {
+	chosen {
+		zephyr,camera = &csi_15pins_capture_port;
+	};
+
+	imx219_input_clock: imx219-input-clock {
+		compatible = "fixed-clock";
+		clock-frequency = <24000000>;
+		#clock-cells = <0>;
+	};
+};
+
+&csi_15pins_interface {
+	status = "okay";
+};
+
+&csi_15pins_ep_in {
+	remote-endpoint-label = "imx219_ep_out";
+	bus-type = <VIDEO_BUS_TYPE_CSI2_DPHY>;
+	data-lanes = <1 2>;
+};
+
+&csi_15pins_i2c {
+	imx219: imx219@1a {
+		compatible = "sony,imx219";
+		clocks = <&imx219_input_clock>;
+		reg = <0x1a>;
+
+		port {
+			imx219_ep_out: endpoint {
+				remote-endpoint-label = "csi_15pins_ep_in";
+				bus-type = <VIDEO_BUS_TYPE_CSI2_DPHY>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};

boards/shields/raspberry_pi_camera_module_2/doc/rpi_cam_v2_normal.jpg

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+shield:
+  name: raspberry_pi_camera_module_2
+  full_name: Raspberry Pi Camera Module 2
+  vendor: Raspberry Pi
+  supported_features:
+    - video