话说现在有CM4能用的Linux系统镜像嘛，看wiki上的连接直接指向了M2S，改改dts应该能直接用？
您试过在树莓派CM4IO板上使用香蕉派CM4吗，我无法启用pcie：root@ubuntu:~# sudo dmesg | grep -i pci
[ 0.000000] Kernel command line: root=/dev/mmcblk1p2 rootfstype=ext4 rw console=tty1 console=ttyS0,115200n8 board=bananapi_cm4 loglevel=7 fsck.mode=force fsck.repair=yes logo=osd0,loaded,0x3d800000,panel vout=panel,enable hdmimode=1080p60hz fbcon=rotate:0 net.ifnames=0 wol_enable= max_freq_a53=1800 max_freq_a73=1800 serial=290b100001230d000005373234543150 systemd.machine_id=290b100001230d000005373234543150 jtag=disable coherent_pool=2M pci=pcie_bus_safe
[ 0.000000] PCI I/O : 0xffffffbefee00000 - 0xffffffbeffe00000 ( 16 MB)
[ 0.651104] PCI: CLS 0 bytes, default 64
[ 0.854275] ehci-pci: EHCI PCI platform driver
[ 0.854369] ohci-pci: OHCI PCI platform driver
[ 3.174039] amlogic-new-usb3-v2 ffe09080.usb3phy: pci-e driver probe, disable USB 3.0 function!!!
[ 10.141723] amlogic-pcie-v2 fc000000.pcieA: amlogic_pcie_probe!
[ 10.143906] OF: PCI: host bridge /pcieA@fc000000 ranges:
[ 10.143916] OF: PCI: IO 0xfc600000…0xfc9fffff → 0x00000000
[ 10.143921] OF: PCI: MEM 0xfca00000…0xfdffffff → 0xfca00000
[ 10.144388] amlogic-pcie-v2 fc000000.pcieA: Set the RC Bus Master, Memory Space and I/O Space enables.
[ 10.144390] amlogic-pcie-v2 fc000000.pcieA: normal gpio
[ 10.144402] amlogic-pcie-v2 fc000000.pcieA: GPIO normal: amlogic_pcie_assert_reset
[ 10.231742] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 10.406738] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 10.588350] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 10.769661] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 10.954251] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.134657] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.318649] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.498647] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.678644] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.858648] amlogic-pcie-v2 fc000000.pcieA: Error: Wait linkup timeout.
[ 11.957359] amlogic-pcie-v2 fc000000.pcieA: phy link never came up
[ 11.960276] amlogic-pcie-v2 fc000000.pcieA: PCI host bridge to bus 0000:00
[ 11.967188] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 11.972828] pci_bus 0000:00: root bus resource [io 0x0000-0x3fffff]
[ 11.979298] pci_bus 0000:00: root bus resource [mem 0xfca00000-0xfdffffff]
[ 11.986304] amlogic-pcie-v2 fc000000.pcieA: link timeout, disable PCIE PLL
[ 11.993311] amlogic-pcie-v2 fc000000.pcieA: power down pcie phy
这边没有树莓派的IO底板，但是你可以对比一下这个树莓派底板和香蕉派的底板pin脚看看是否有差异