dwmw2:

OpenWrt master as of today at d8ab321

The 5.4 kernel doesn't finish booting. Just hangs during PCIe setup.

MT7623> bootm
bootm flag=0, states=70f

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 5.4.50 (builder@buildhost) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r13704-982468de35)) #0 SMP PREEMPT Mon Jul 6 18:23:33 2020
[ 0.000000] CPU: ARMv7 Processor [410fc073] revision 3 (ARMv7), cr=10c5387d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: UniElec U7623-02 eMMC (512M RAM)
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] percpu: Embedded 15 pages/cpu s30220 r8192 d23028 u61440
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129920
[ 0.000000] Kernel command line: root=/dev/mmcblk0p2 rootfstype=squashfs,f2fs
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 505132K/524288K available (7168K kernel code, 215K rwdata, 1664K rodata, 4096K init, 240K bss, 19156K reserved, 0K cma-reserved, 0K highmem)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] random: get_random_bytes called from start_kernel+0x2f8/0x4a4 with crng_init=0
[ 0.000000] arch_timer: cp15 timer(s) running at 13.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x2ff89eacb, max_idle_ns: 440795202429 ns
[ 0.000005] sched_clock: 56 bits at 13MHz, resolution 76ns, wraps every 4398046511101ns
[ 0.000016] Switching to timer-based delay loop, resolution 76ns
[ 0.000173] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 147020034397 ns
[ 0.000189] sched_clock: 32 bits at 13MHz, resolution 76ns, wraps every 165191050201ns
[ 0.000459] Calibrating delay loop (skipped), value calculated using timer frequency.. 26.00 BogoMIPS (lpj=130000)
[ 0.000473] pid_max: default: 32768 minimum: 301
[ 0.000630] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.000643] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.001446] CPU: Testing write buffer coherency: ok
[ 0.060045] Setting up static identity map for 0x80100000 - 0x80100060
[ 0.080032] rcu: Hierarchical SRCU implementation.
[ 0.120099] smp: Bringing up secondary CPUs ...
[ 0.360606] smp: Brought up 1 node, 4 CPUs
[ 0.360622] SMP: Total of 4 processors activated (104.00 BogoMIPS).
[ 0.360628] CPU: All CPU(s) started in SVC mode.
[ 0.370565] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 3
[ 0.370957] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.370979] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.371196] pinctrl core: initialized pinctrl subsystem
[ 0.372113] NET: Registered protocol family 16
[ 0.372351] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.373194] No ATAGs?
[ 0.457116] usbcore: registered new interface driver usbfs
[ 0.457173] usbcore: registered new interface driver hub
[ 0.457287] usbcore: registered new device driver usb
[ 0.458697] clocksource: Switched to clocksource arch_sys_counter
[ 0.459521] thermal_sys: Registered thermal governor 'step_wise'
[ 0.459947] NET: Registered protocol family 2
[ 0.460860] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[ 0.460899] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
[ 0.460941] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 0.461001] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.461107] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.461139] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 0.461341] NET: Registered protocol family 1
[ 0.461378] PCI: CLS 0 bytes, default 64
[ 0.524240] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[ 0.529661] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.529675] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 1.582893] mtk-scpsys 10006000.scpsys: Failed to power on domain mfg
[ 1.583478] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[ 1.585804] printk: console [ttyS0] disabled
[ 1.606064] 11004000.serial: ttyS0 at MMIO 0x11004000 (irq = 198, base_baud = 1625000) is a ST16650V2
[ 2.037227] printk: console [ttyS0] enabled
[ 2.042067] mtk_rng 1020f000.rng: registered RNG driver
[ 2.042214] random: fast init done
[ 2.050996] random: crng init done
[ 2.051865] loop: module loaded
[ 2.058467] mt6323-regulator mt6323-regulator: Chip ID = 0x2023
[ 2.073853] libphy: Fixed MDIO Bus: probed
[ 2.101171] libphy: mdio: probed
[ 2.110525] mtk_soc_eth 1b100000.ethernet: generated random MAC address 76:ea:77:3c:b5:94
[ 2.119205] mtk_soc_eth 1b100000.ethernet eth0: mediatek frame engine at 0xe08e0000, irq 204
[ 2.128893] xhci-mtk 1a1c0000.usb: xHCI Host Controller
[ 2.134142] xhci-mtk 1a1c0000.usb: new USB bus registered, assigned bus number 1
[ 2.144655] xhci-mtk 1a1c0000.usb: hcc params 0x01401198 hci version 0x96 quirks 0x0000000000210010
[ 2.153785] xhci-mtk 1a1c0000.usb: irq 202, io mem 0x1a1c0000
[ 2.160362] hub 1-0:1.0: USB hub found
[ 2.164151] hub 1-0:1.0: 1 port detected
[ 2.168425] xhci-mtk 1a1c0000.usb: xHCI Host Controller
[ 2.173695] xhci-mtk 1a1c0000.usb: new USB bus registered, assigned bus number 2
[ 2.181116] xhci-mtk 1a1c0000.usb: Host supports USB 3.0 SuperSpeed
[ 2.187454] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.196053] hub 2-0:1.0: USB hub found
[ 2.199858] hub 2-0:1.0: 1 port detected
[ 2.204430] i2c /dev entries driver
[ 2.208454] mtk-thermal 1100b000.thermal: Device not calibrated, using default calibration values
[ 2.218201] mtk-wdt 10007000.watchdog: Watchdog enabled (timeout=31 sec, nowayout=0)
[ 2.226452] cpu cpu0: dummy supplies not allowed for exclusive requests
[ 2.234652] sdhci: Secure Digital Host Controller Interface driver
[ 2.240877] sdhci: Copyright(c) Pierre Ossman
[ 2.246868] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 111 (MSDC0_DAT7) as part of deactivating group MSDC0_DAT7 - it is already used for some other setting
[ 2.262207] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 112 (MSDC0_DAT6) as part of deactivating group MSDC0_DAT6 - it is already used for some other setting
[ 2.277670] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 113 (MSDC0_DAT5) as part of deactivating group MSDC0_DAT5 - it is already used for some other setting
[ 2.292979] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 114 (MSDC0_DAT4) as part of deactivating group MSDC0_DAT4 - it is already used for some other setting
[ 2.308276] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 118 (MSDC0_DAT3) as part of deactivating group MSDC0_DAT3 - it is already used for some other setting
[ 2.323706] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 119 (MSDC0_DAT2) as part of deactivating group MSDC0_DAT2 - it is already used for some other setting
[ 2.339011] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 120 (MSDC0_DAT1) as part of deactivating group MSDC0_DAT1 - it is already used for some other setting
[ 2.354306] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 121 (MSDC0_DAT0) as part of deactivating group MSDC0_DAT0 - it is already used for some other setting
[ 2.369603] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 116 (MSDC0_CMD) as part of deactivating group MSDC0_CMD - it is already used for some other setting
[ 2.384724] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 117 (MSDC0_CLK) as part of deactivating group MSDC0_CLK - it is already used for some other setting
[ 2.399846] mediatek-mt2701-pinctrl 1000b000.pinctrl: not freeing pin 115 (MSDC0_RSTB) as part of deactivating group MSDC0_RSTB - it is already used for some other setting
[ 2.440697] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.449281] NET: Registered protocol family 10
[ 2.454679] Segment Routing with IPv6
[ 2.458452] NET: Registered protocol family 17
[ 2.463141] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 2.476389] 8021q: 802.1Q VLAN Support v1.8
[ 2.480782] ThumbEE CPU extension supported.
[ 2.485193] Registering SWP/SWPB emulation handler
[ 2.515399] mtk-pcie 1a140000.pcie: host bridge /pcie@1a140000 ranges:
[ 2.522026] mtk-pcie 1a140000.pcie: IO 0x1a160000..0x1a16ffff -> 0x1a160000
[ 2.529325] mtk-pcie 1a140000.pcie: MEM 0x60000000..0x6fffffff -> 0x60000000