This PR introduces Batocera support for the RK3562 family (found in low-cost retro gaming handhelds), with the KICKPI K3B serving as the first supported RK3562 SBC.

About KICKPI K3B

Product Page: https://www.kickpi.com/product/k3b/

WIKI: https://doc.kickpi.com/products/introduction/kickpi_k3b/

Batocera System

The serial boot log can be found here

Since the KICKPI K3B only features a MIPI DSI display interface, using a DSI panel is necessary. Utilizing a DTBO to support various DSI panels is a practical approach. This PR provides reference support for an 800x1280 10.1-inch MIPI 45-pin screen.

How to Install

Method 1: microSD Card

Flash the batocera.img to a microSD card and insert it into the board to boot.

Method 2: MaskROM Mode (eMMC Flashing)

Press the MaskROM button while connecting the board to your PC via a USB Type-A to Type-C cable. Then, use Rockchip's rkdeveloptool to flash batocera.img directly into the eMMC. You may need a loader during this process, which can be obtained as follows:

git clone https://github.com/rockchip-linux/rkbin.git
cd rkbin
sed -i 's/rk3562_ddr_1332MHz_v1.09.bin/rk3562_ddr_1056MHz_v1.09.bin/' RKBOOT/RK3562MINIALL.ini
./tools/boot_merger RKBOOT/RK3562MINIALL.ini .
ls rk3562_spl_loader_v1.09.107.bin

Note: After flashing via MaskROM, you must switch the power supply to a phone adapter or a DC power source for proper booting. The maximum output current from a PC's USB Type-A port is insufficient to power the KICKPI K3B during normal startup.