[Armbian build PR] - rk3588: Add board NanoPi R6C

[RSS Bot]

Description

While the NanoPi R6C can in theory also use an Armbian image built for the NanoPi R6S like described on the Armbian website, it was not a user-friendly solution at all.

Add the R6C as separate board with support for the latest mainline U-Boot.

The R6S is a solid little machine with one M.2 slot for a NVMe SSD as well as two Ethernet ports (1x 1G, 1x 2.5G), two USB-A (USB2 and USB3) ports and even an integrated chip for UART debugging, so you only need to connect a USB-C cable for debugging instead of the three cables with a separate UART-USB adapter.

Wiki link: https://wiki.friendlyelec.com/wiki/index.php/NanoPi_R6C

Hardware specs:

    SoC: Rockchip RK3588S
        CPU: Quad-core ARM Cortex-A76(up to 2.4GHz) and quad-core Cortex-A55 CPU (up to 1.8GHz)
        GPU: Mali-G610 MP4, compatible with OpenGLES 1.1, 2.0, and 3.2, OpenCL up to 2.2 and Vulkan1.2
        VPU: 8K@60fps H.265 and VP9 decoder, 8K@30fps H.264 decoder, 4K@60fps AV1 decoder, 8K@30fps H.264 and H.265 encoder
        NPU: 6TOPs, supports INT4/INT8/INT16/FP16
    RAM: 64-bit 4GB/8GB LPDDR4X at 2133MHz
    Flash: 32GB/None eMMC, at HS400 mode
    Ethernet: one Native Gigabit Ethernet, and one PCIe 2.5G Ethernet
    USB: one USB 3.0 Type-A and one USB 2.0 Type-A
    PCIe: one M.2 Key M connector with PCIe 2.1 x1
    HDMI:
        compatible with HDMI2.1, HDMI2.0, and HDMI1.4 operation
        support up to 7680x4320@60Hz
        Support RGB/YUV(up to 10bit) format
    microSD: support up to SDR104 mode
    GPIO:
        30-pin 2.54mm header connector
        up to 1x SPI, 3x UARTs, 3x I2Cs, 2x SPDIFs, 1x I2Ss, 3x PWMs, 20x GPIOs
    Debug: UART via 3-Pin 2.54mm header, or on-board USB-C to UART
    LEDs: 4 x GPIO Controlled LED (SYS, WAN, LAN, LED1)
    others:
        2 Pin 1.27/1.25mm RTC battery input connector for low power RTC IC HYM8563TS
        MASK button for eMMC update
        one user button
    Power supply: USB-C, support PD, 5V/9V/12V/20V input
    PCB: 8 Layer, 62x90x1.6mm

How Has This Been Tested?

• [x] Build success: ./compile.sh BOARD=nanopi-r6c BRANCH=edge RELEASE=trixie EXPERT=yes KERNEL_CONFIGURE=no BUILD_MINIMAL=no BUILD_DESKTOP=no EXTRAWIFI=no
• [x] Booting successfully into Armbian, no board-specific problems observed, works as expected

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] My changes generate no new warnings
• [x] Any dependent changes have been merged and published in downstream modules

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