board: rockchip: Add support for 9Tripod X3568 v4

The 9Tripod X3568 v4 is an RK3568-based SBC, just like the RK3568-EVB.
It always uses soldered connections between the X3568CV2/X3568CV3/X3568CV4 core board
and the X3568bv4 I/O board.

The differences between the core boards
- PCB size, layout
- CPU (RK3568B2/RK3568J)
- Memory type (DDR4/LPDDR4/LPDDR4X) and size
- eMMC size
- DSI/EDP resistor values
Although the components vary, they maintain full compatibility.

The X3568 board has multiple hardware revisions, and we currently support v4 (I/O board).

Specification:
- SoC: RockChip RK3568 ARM64 (4 cores)
- eMMC: 16-128 GB
- RAM: 2-16 GB
- Power: DC 12V 2A
- Ethernet: 2x YT8521SC RGMII (10/100/1000 Mbps)
- Wireless radio: 802.11b/g/n/ac/ax dual-band
- LED:
  Power: AlwaysOn
  User: GPIO
- Button:
  VOL+: SARADC/0 <35k µV>
  VOL-: SARADC/0 <450k µV>
  Power/Reset: PMIC RK809
- CAN
  CAN/1: 4-pin (PH 2.0)
- PWM
  PWM/4: Backlight DSI/0 DSI/1
  PWM/7: IR Receiver [may not install]
- UART:
  UART/2: Debug TTL - 1500000 8N1 (1.25mm)
  UART/3: TTL (PH 2.0)
  UART/4: TTL (PH 2.0)
  UART/8: AP6275S Bluetooth
  UART/9: TTL (PH 2.0)
- I2C:
  I2C/0: PMIC RK809
  I2C/1: Touchscreen DSI/0 DSI/1
  I2C/4: Camera
  I2C/5: RTC@51 PCF8563
- I2S:
  I2S/0: miniHDMI Sound
  I2S/1: RK809 Audio Codec
  I2S/3: AP6275S Bluetooth Sound
- SDMMC:
  SDMMC/0: microSD (TF) slot
  SDMMC/2: AP6275S SDIO WiFi card
- Camera: 1x CSI
- Video: miniHDMI / DSI0 (MIPI/LVDS) / DSI1 (MIPI/EDP)
- Audio: miniHDMI / MIC on-board / Speaker / SPDIF / 3.5mm Headphones / AP6275S Bluetooth
- USB:
  USB 2.0 HOST x2
  USB 2.0 HOST x3 (4-pin)
  USB 2.0 OTG x1 (shared with USB 3.0 OTG/HOST) [slot may not install]
  USB 3.0 HOST x1
  USB 3.0 OTG/HOST x1
- SATA: 1x SATA 3.0 with Power/4-pin [slot may not install]
- PCIe: 1x PCIe 3.0 x2 (x4 connector) [power/clock/slot may not install]

Link:
- https://appletsapi.52solution.com/media/X3568V4%E5%BC%80%E5%8F%91%E6%9D%BF%E7%A1%AC%E4%BB%B6%E6%89%8B%E5%86%8C.pdf
- https://blog.gov.cooking/archives/research-ninetripod-x3568-v4-and-flash.html

Signed-off-by: Coia Prant <coiaprant@gmail.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://patch.msgid.link/20260709185101.2149485-1-coiaprant@gmail.com
Signed-off-by: Quentin Schulz <u-boot@0leil.net>

board/rockchip/evb_rk3568/MAINTAINERS

@@ -1,3 +1,8 @@
+9TRIPOD-X3568-V4
+M:	Coia Prant <coiaprant@gmail.com>
+S:	Maintained
+F:	configs/9tripod-x3568-v4-rk3568_defconfig
+
 BANANAPI-BPI-R2-PRO
 M:	Frank Wunderlich <frank-w@public-files.de>
 S:	Maintained

configs/9tripod-x3568-v4-rk3568_defconfig

@@ -0,0 +1,76 @@
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=24000000
+CONFIG_ARCH_ROCKCHIP=y
+CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3568-9tripod-x3568-v4"
+CONFIG_ROCKCHIP_RK3568=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SYS_LOAD_ADDR=0xc00800
+CONFIG_DEBUG_UART_BASE=0xFE660000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_PCI=y
+CONFIG_DEBUG_UART=y
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_SPL_FIT_SIGNATURE=y
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
+CONFIG_DEFAULT_FDT_FILE="rockchip/rk3568-9tripod-x3568-v4.dtb"
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_SPL_MAX_SIZE=0x40000
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_SPL_ATF=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_PCI=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_PMIC=y
+CONFIG_CMD_REGULATOR=y
+# CONFIG_SPL_DOS_PARTITION is not set
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_OF_LIVE=y
+CONFIG_OF_SPL_REMOVE_PROPS="interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
+CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_SPL_SYSCON=y
+CONFIG_AHCI=y
+CONFIG_DWC_AHCI=y
+CONFIG_SPL_CLK=y
+CONFIG_ROCKCHIP_GPIO=y
+CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_MISC=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+CONFIG_MMC_DW=y
+CONFIG_MMC_DW_ROCKCHIP=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_ROCKCHIP=y
+CONFIG_DWC_ETH_QOS=y
+CONFIG_DWC_ETH_QOS_ROCKCHIP=y
+CONFIG_PHY_MOTORCOMM=y
+CONFIG_NVME_PCI=y
+CONFIG_PCIE_DW_ROCKCHIP=y
+CONFIG_PHY_ROCKCHIP_INNO_USB2=y
+CONFIG_PHY_ROCKCHIP_NANENG_COMBOPHY=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_DM_PMIC=y
+CONFIG_PMIC_RK8XX=y
+CONFIG_REGULATOR_RK8XX=y
+CONFIG_PWM_ROCKCHIP=y
+CONFIG_SPL_RAM=y
+CONFIG_SCSI=y
+CONFIG_BAUDRATE=1500000
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_SYS_NS16550_MEM32=y
+CONFIG_SYSRESET=y
+CONFIG_USB=y
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_GENERIC=y
+CONFIG_USB_DWC3=y
+CONFIG_USB_DWC3_GENERIC=y
+CONFIG_ERRNO_STR=y

doc/board/rockchip/rockchip.rst

@@ -126,6 +126,7 @@ List of mainline supported Rockchip boards:
      - Xunlong Orange Pi 3B (orangepi-3b-rk3566)
 
 * rk3568
+     - 9Tripod X3568 v4 (9tripod-x3568-v4-rk3568)
      - Rockchip Evb-RK3568 (evb-rk3568)
      - Banana Pi BPI-R2 Pro (bpi-r2-pro-rk3568)
      - EmbedFire LubanCat 2 (lubancat-2-rk3568)