visionfive 2 pci/nvme issue

gistfile1.txt

# 6.2 kernel
~ # ls /sys/class/pci_bus/
~ # ls /sys/class/block/
mmcblk1    mmcblk1p1  mmcblk1p2  mmcblk1p3
~ # find /sys/class/nvme*
/sys/class/nvme
/sys/class/nvme-generic
/sys/class/nvme-subsystem



# 5.15 kernel
root@starfive:~# ls /sys/class/pci_bus/
0000:00  0000:01  0001:00  0001:01
root@starfive:~# ls -lah /sys/class/pci_bus/
total 0
drwxr-xr-x  2 root root 0 Jan  1  2001 .
drwxr-xr-x 56 root root 0 Jan  1  2001 ..
lrwxrwxrwx  1 root root 0 Jan  1  2001 0000:00 -> ../../devices/platform/soc/2b000000.pcie/pci0000:00/pci_bus/0000:00
lrwxrwxrwx  1 root root 0 Jan  1  2001 0000:01 -> ../../devices/platform/soc/2b000000.pcie/pci0000:00/0000:00:00.0/pci_bus/0000:01
lrwxrwxrwx  1 root root 0 Jan  1  2001 0001:00 -> ../../devices/platform/soc/2c000000.pcie/pci0001:00/pci_bus/0001:00
lrwxrwxrwx  1 root root 0 Jan  1  2001 0001:01 -> ../../devices/platform/soc/2c000000.pcie/pci0001:00/0001:00:00.0/pci_bus/0001:01
root@starfive:~# ls /sys/class/block/
loop0  loop3  loop6    mmcblk1p1  mtdblock0  nvme0n1
loop1  loop4  loop7    mmcblk1p2  mtdblock1  nvme0n1p1
loop2  loop5  mmcblk1  mmcblk1p3  mtdblock2
root@starfive:~# find /sys/class/nvme*
/sys/class/nvme
/sys/class/nvme/nvme0
/sys/class/nvme-generic
/sys/class/nvme-generic/ng0n1
/sys/class/nvme-subsystem
/sys/class/nvme-subsystem/nvme-subsys0
root@starfive:~# ls -lah /sys/devices/platform/soc/2b000000.pcie/driver
lrwxrwxrwx 1 root root 0 Jun 10  2022 /sys/devices/platform/soc/2b000000.pcie/driver -> ../../../../bus/platform/drivers/pcie_plda
root@starfive:~# ls -lah /sys/devices/platform/soc/2c000000.pcie/driver
lrwxrwxrwx 1 root root 0 Jun 10  2022 /sys/devices/platform/soc/2c000000.pcie/driver -> ../../../../bus/platform/drivers/pcie_plda
root@starfive:~# grep plda /boot/boot/config-5.15.0-starfive
root@starfive:~# grep -i plda /boot/boot/config-5.15.0-starfive
CONFIG_PCIE_PLDA=y

root@starfive:~# lspci -n
0000:00:00.0 0604: 1556:1111 (rev 02)
0000:01:00.0 0c03: 1106:3483 (rev 01)
0001:00:00.0 0604: 1556:1111 (rev 02)
0001:01:00.0 0108: 126f:2263 (rev 03)

https://github.com/starfive-tech/linux/blob/JH7110_VisionFive2_510_devel/drivers/pci/controller/pcie-plda.c

https://patchwork.kernel.org/project/linux-pci/cover/[email protected]/