boards: nxp: rd_rw612_bga: add display support documentation

Add documentation about supported displays on this board, as the list is
getting rather long and each display has its own bespoke connection
requirements.

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

boards/nxp/rd_rw612_bga/doc/index.rst

@@ -75,6 +75,59 @@ The default configuration can be found in the defconfig file:
 
 Other hardware features are not currently supported
 
+
+Display Support
+***************
+
+The rd_rw612_bga board supports several in-tree display modules. Setup for
+each module is described below:
+
+GoWorld 16880 LCM
+=================
+
+This module does not connect directly to the board, and must be connected
+via an adapter board and jumper wires. Connections are described in
+:zephyr_file:`boards/nxp/rd_rw612_bga/dts/goworld_16880_lcm.overlay`. The
+display sample can be built for this board like so:
+
+.. zephyr-app-commands::
+   :board: rd_rw612_bga
+   :gen-args: -DDTC_OVERLAY_FILE=goworld_16880_lcm.overlay
+   :zephyr-app: samples/drivers/display
+   :goals: build
+   :compact:
+
+Adafruit 2.8 TFT
+================
+
+The :ref:`adafruit_2_8_tft_touch_v2` connects to the board's Arduino headers
+directly, but some modifications are required (see
+:zephyr_file:`boards/shields/adafruit_2_8_tft_touch_v2/boards/rd_rw612_bga.overlay`
+for a list). The display sample can be built for this module like so:
+
+.. zephyr-app-commands::
+   :board: rd_rw612_bga
+   :shield: adafruit_2_8_tft_touch_v2
+   :zephyr-app: samples/drivers/display
+   :goals: build
+   :compact:
+
+NXP LCD_PAR_S035
+================
+
+The :ref:`lcd_par_s035` does not connect directly to the board, and must be
+connected via jumper wires. Connections and required board changes are
+described in
+:zephyr_file:`boards/shields/lcd_par_s035/boards/rd_rw612_bga.overlay`. The
+display sample can be built for the module like so:
+
+.. zephyr-app-commands::
+   :board: rd_rw612_bga
+   :shield: lcd_par_s035_8080
+   :zephyr-app: samples/drivers/display
+   :goals: build
+   :compact:
+
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