docs(Riverdi): Add Riverdi board docs (#7629)

docs/details/integration/boards/index.rst

@@ -6,3 +6,4 @@ Boards
     :maxdepth: 2
 
     toradex
+    riverdi

docs/details/integration/boards/riverdi.rst

@@ -0,0 +1,71 @@
+=======
+Riverdi
+=======
+
+`Riverdi <https://riverdi.com/>`__ specializes in making high quality
+displays and the boards that carry them. They offer solutions that
+range from simple display panels to intelligent displays, and
+everything in between.
+
+- STM32 Embedded Displays
+- Single Board Computer Displays
+- EVE Intelligent Displays
+- HDMI Displays
+- Evaluation Boards
+- RGB, LVDS, MIPI DSI LCD Displays
+
+
+STM32 Embedded Displays
+***********************
+
+The STM32 Embedded Displays have an STM32 MCU onboard which makes
+it possible to embed an entire application into the device. LVGL
+is well-suited to these boards.
+
+lv_port_riverdi_stm32u5
+-----------------------
+
+`lv_port_riverdi_stm32u5 <https://github.com/lvgl/lv_port_riverdi_stm32u5>`
+is a port repo of LVGL which supports all 5-inch Riverdi STM32
+Embedded Displays.
+
+- `RVT50HQSNWC00-B <https://riverdi.com/product/5-inch-lcd-display-capacitive-touch-panel-optical-bonding-uxtouch-stm32u5-rvt50hqsnwc00-b>`
+- `RVT50HQSNWC00 <https://riverdi.com/product/5-inch-lcd-display-capacitive-touch-panel-air-bonding-uxtouch-stm32u5-rvt50hqsnwc00>`
+- `RVT50HQSFWCA0 <https://riverdi.com/product/5-inch-lcd-display-capacitive-touch-panel-air-bonding-atouch-frame-stm32u5-rvt50hqsfwca0>`
+- `RVT50HQSNWCA0 <https://riverdi.com/product/5-inch-lcd-display-capacitive-touch-panel-air-bonding-atouch-stm32u5-rvt50hqsnwca0>`
+- `RVT50HQSFWN00 <https://riverdi.com/product/5-inch-lcd-display-stm32u5-frame-rvt50hqsfwn00>`
+- `RVT50HQSNWN00 <https://riverdi.com/product/5-inch-lcd-display-stm32u5-rvt50hqsnwn00>`
+
+It natively supports the embedded NeoChrom GPU thanks to LVGL's support
+for :ref:`Nema GFX <nema_gfx>`. NemaVG --- an extension to Nema's
+base support --- is implemented by this MCU.
+
+The MCU has an LCD driver peripheral which LVGL uses to update the
+display. See the :ref:`LTDC <stm32 ltdc driver>` driver docs
+for more info and how to customize its use.
+
+
+Single Board Computer Displays
+******************************
+
+The Single Board Computer Displays are ready to use with
+:ref:`Toradex <toradex>` Dahlia and Mallow carrier boards. In fact,
+those carrier boards are compatible with all 34-pin Riverdi
+MIPI-DSI displays.
+
+
+Other Products
+**************
+
+The **EVE Intelligent Displays** feature a Bridgetek EVE graphics
+controller IC so that the display can be controlled using
+high-level drawing commands over a lower-bandwidth interface than
+RGB, MIPI, etc.
+
+The **HDMI Displays** sport an HDMI interface for streamlined
+integration with PCs or SBCs. These displays are still low-profile
+so they can be embedded into custom fixtures with ease.
+
+The **Evaluation Boards** are affordable carrier boards for getting
+Riverdi display panels up and running before designing or buying a
+carrier board for a production application.

docs/details/integration/boards/toradex.rst

@@ -1,3 +1,5 @@
+.. _toradex:
+
 =======
 Toradex
 =======

docs/details/integration/driver/display/st_ltdc.rst

@@ -1,3 +1,5 @@
+.. _stm32 ltdc driver:
+
 =================
 STM32 LTDC Driver
 =================