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Introduce support for the SolidRun i.MX8MP HummingBoard IIoT platform. This board is a new design based on the i.MX8MP System on Module and does not share much hardware with previous HummingBoard variants. It comes with some common features: - 3x USB-3.0 Type A connector - 2x 1Gbps RJ45 Ethernet - USB Type-C Console Port - microSD connector - RTC with backup battery - RGB Status LED - 1x M.2 M-Key connector with PCI-E Gen. 3 x1 - 1x M.2 B-Key connector with USB-2.0/3.0 + SIM card holder - 1x LVDS Display Connector - 1x DSI Display Connector - GPIO header - 2x RS232/RS485 ports (configurable) - 2x CAN In addition there is a board-to-board expansion connector to support custom daughter boards with access to SPI, a range of GPIOs and - notably - CAN and UART. Both 2x CAN and 2x UART can be muxed either to this b2b connector, or a terminal block connector on the base board. The routing choice for UART and CAN is expressed through gpio mux-controllers in DT and can be changed by applying dtb overlays. Signed-off-by: Josua Mayer <josua@solid-run.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>