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DRA722: Dragon AM572x fails to detect BCM56340 Broadcom switch PCIe device randomly with omap_l3_noc error message on Linux platform .

Part Number: DRA722

Hi,

I am Abinaya's colleague from Belden Inc. Abinaya was working on the following issue.

DRA722: PCIe: Either PCIe1 or PCIe2 is not detected properly. - Processors forum - Processors - TI E2E support forums

We have resolved the above issue. But another related issue is being seen. 

In the above block diagram Broadcom switch (BCM56340) in PCIe domain-2 does not get detected during boot (warm boot/reboot). This happens 50% of the time. It fails to get detected roughly 5 times out of 10 times. While scanning bus no. 0 (primary bus), PCIe-PCIe bridge gets detected, but when bus no. 1 (secondary bus) is scanned, it fails to detect BCM56340 randomly. Once it fails to detect BCM56340, the system throws the following error messages:

[ 0.673219] omap_l3_noc 44000000.ocp: L3 application error: target 5 mod:1 (unclearable)
[ 0.673235] omap_l3_noc 44000000.ocp: L3 debug error: target 5 mod:1 (unclearable)

My queries are:

1) Let us know what is going wrong. What is the problem?

2) Why is BCM56340 connected to PCIe domain-2 not getting detected consistently?

3) Let us know whether it is a problem with the PCIe-PCIe bridge of Dragon AM572x or with Broadcom switch BCM56340.

4) What should be done to resolve this issue?

5) Why are the following error messages thrown?

 0.673219] omap_l3_noc 44000000.ocp: L3 application error: target 5 mod:1 (unclearable)
[ 0.673235] omap_l3_noc 44000000.ocp: L3 debug error: target 5 mod:1 (unclearable)

Note that there is no such problem with PCIe domain-1. BCM56340 in PCIe domain-1 always gets detected.

Here are the function call trace/logs of PCIe subsystem in success and failure cases:

---------------------------------------------

[ 0.595886] dra7xx_pcie_probe:678
[ 0.598048] dra7xx_pcie_enable_phy:562 ret=0
[ 0.600131] dra7xx_pcie_enable_phy:568 ret=0
[ 0.602247] dra7xx_pcie_enable_phy:574 ret=0
[ 0.604273] dra7xx_pcie_probe:752 ret=0
[ 0.608323] dra7xx_pcie_probe:764 ret=0
[ 0.612410] dra7xx_pcie_unaligned_memaccess:645, args.args[0]=20, args.args[1]=1, args.args[1]=1
[ 0.612425] dra7xx_add_pcie_port:502
[ 0.612523] dw_pcie_host_init:297
[ 0.612534] pci_alloc_host_bridge:541
[ 0.613368] dw_pcie_setup_rc:606
[ 0.613387] dra7xx_pcie_host_init:236 ret=0
[ 0.619457] dra7xx_pcie_host_init:250 ret=0
[ 0.619470] pci_scan_root_bus_bridge:2688
[ 0.619482] pci_scan_root_bus_bridge:2701, found=1
[ 0.619489] pci_register_host_bridge:774
[ 0.619647] pci_scan_child_bus:2509
[ 0.619668] pci_bus_read_dev_vendor_id:2019 - initial dv=8888104C, d=8888, v=104C, devfn=0
[ 0.619678] pci_bus_read_dev_vendor_id:2034 - final dv=8888104C, d=8888, v=104C, devfn=0
[ 0.619725] pci_setup_device:1555 - this is a bridge device.
[ 0.619735] pci_read_bases:325
[ 0.619767] set_pcie_hotplug_bridge:1269
[ 0.619780] pci_device_add:2162
[ 0.619786] pci_configure_device:1891
[ 0.619999] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=8
[ 0.620010] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=16
[ 0.620020] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=24
[ 0.620029] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=32
[ 0.620038] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=40
[ 0.620047] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=48
[ 0.620056] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=56
[ 0.620064] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=64
[ 0.620073] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=72
[ 0.620082] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=80
[ 0.620090] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=88
[ 0.620099] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=96
[ 0.620108] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=104
[ 0.620117] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=112
[ 0.620126] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=120
[ 0.620134] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=128
[ 0.620143] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=136
[ 0.620151] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=144
[ 0.620160] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=152
[ 0.620168] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=160
[ 0.620177] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=168
[ 0.620185] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=176
[ 0.620194] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=184
[ 0.620202] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=192
[ 0.620211] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=200
[ 0.620219] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=208
[ 0.620228] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=216
[ 0.620236] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=224
[ 0.620245] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=232
[ 0.620253] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=240
[ 0.620262] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=248
[ 0.620275] pcibios_fixup_bus:294
[ 0.620294] pci_scan_bridge:997
[ 0.622429] pci_scan_bridge:1014 - max=0, pass=0, primary=0, secondary=1, subordinate=255
[ 0.622443] pci_scan_bridge:1042-2 - pass=0, broken=0
[ 0.622452] pci_scan_bridge:1061-1 - child bus not found. adding new child bus.
[ 0.622459] pci_add_new_bus:956
[ 0.622466] pci_alloc_child_bus:886
[ 0.622557] pci_scan_child_bus:2509
[ 0.622581] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.622591] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.622767] pci_read_bases:325
[ 0.622980] pci_device_add:2162
[ 0.622987] pci_configure_device:1891
[ 0.623555] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.623565] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.623734] pci_read_bases:325
[ 0.623941] pci_device_add:2162
[ 0.623949] pci_configure_device:1891
[ 0.624502] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=2
[ 0.624511] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624526] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=3
[ 0.624534] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624548] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=4
[ 0.624556] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624570] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=5
[ 0.624577] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624591] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=6
[ 0.624598] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624612] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=7
[ 0.624619] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.624633] pcibios_fixup_bus:294
[ 0.624696] pci_scan_bridge:1073-1 - bus scan completed. cmax=1
[ 0.624704] pci_scan_bridge:1080, cmax=1, max=255, subordinate=255
[ 0.624714] pci_scan_child_bus:2540, pass=0, bridge scan completed. num of subordinate buses=255
[ 0.624721] pci_scan_bridge:997
[ 0.626857] pci_scan_bridge:1014 - max=255, pass=1, primary=0, secondary=1, subordinate=255
[ 0.626870] pci_scan_bridge:1042-2 - pass=1, broken=0
[ 0.626877] pci_scan_bridge:1049-1 - goto out
[ 0.626885] pci_scan_child_bus:2540, pass=1, bridge scan completed. num of subordinate buses=255
[ 0.626900] pci_scan_root_bus_bridge:2721, root bus scan completed. max=255
[ 0.626907] dw_pcie_host_init:434 - root bridge scan completed. ret=0
[ 0.626914] pci_bus_size_bridges:1346
[ 0.626932] pci_bus_assign_resources:1433
[ 0.626942] pci_assign_resource:320
[ 0.626964] pci_assign_resource:320
[ 0.626989] pdev_assign_fixed_resources:1376
[ 0.626996] pci_assign_resource:320
[ 0.627053] pci_assign_resource:320
[ 0.627106] pci_assign_resource:320
[ 0.627159] pci_assign_resource:320
[ 0.627211] pci_assign_resource:320
[ 0.627265] pdev_assign_fixed_resources:1376
[ 0.627270] pdev_assign_fixed_resources:1376
[ 0.627278] pci_setup_bridge:706
[ 0.627295] pci_setup_bridge_io:595
[ 0.627302] pci_setup_bridge_mmio:630
[ 0.627310] pci_setup_bridge_mmio_pref:650
[ 0.627331] pcie_bus_configure_settings:2462
[ 0.627337] pcie_bus_configure_set:2433
[ 0.627344] pci_walk_bus:389
[ 0.627349] pcie_bus_configure_set:2433
[ 0.627358] pcie_bus_configure_set:2433
[ 0.627364] pci_bus_add_devices:349
[ 0.627369] pci_bus_add_device:314
[ 0.627506] local_pci_probe:295
[ 0.627667] pci_walk_bus:389
[ 0.627790] pci_walk_bus:389
[ 0.627886] pci_bus_add_devices:349
[ 0.627891] pci_bus_add_device:314
[ 0.627912] pci_bus_add_device:314
[ 0.627927] dw_pcie_host_init:450
[ 0.627935] dra7xx_add_pcie_port:527 ret=0
[ 0.627942] dra7xx_pcie_probe:797 ret=0
[ 0.628054] dra7xx_pcie_probe:678
[ 0.630198] dra7xx_pcie_enable_phy:562 ret=0
[ 0.632368] dra7xx_pcie_enable_phy:568 ret=0
[ 0.634413] dra7xx_pcie_enable_phy:574 ret=0
[ 0.636437] dra7xx_pcie_probe:752 ret=0
[ 0.640485] dra7xx_pcie_probe:764 ret=0
[ 0.644542] dra7xx_pcie_unaligned_memaccess:645, args.args[0]=20, args.args[1]=1, args.args[1]=1
[ 0.644556] dra7xx_add_pcie_port:502
[ 0.644652] dw_pcie_host_init:297
[ 0.644662] pci_alloc_host_bridge:541
[ 0.645469] dw_pcie_setup_rc:606
[ 0.645488] dra7xx_pcie_host_init:236 ret=0
[ 0.651555] dra7xx_pcie_host_init:250 ret=0
[ 0.651562] pci_scan_root_bus_bridge:2688
[ 0.651573] pci_scan_root_bus_bridge:2701, found=1
[ 0.651581] pci_register_host_bridge:774
[ 0.651732] pci_scan_child_bus:2509
[ 0.651751] pci_bus_read_dev_vendor_id:2019 - initial dv=8888104C, d=8888, v=104C, devfn=0
[ 0.651760] pci_bus_read_dev_vendor_id:2034 - final dv=8888104C, d=8888, v=104C, devfn=0
[ 0.651801] pci_setup_device:1555 - this is a bridge device.
[ 0.651811] pci_read_bases:325
[ 0.651841] set_pcie_hotplug_bridge:1269
[ 0.651852] pci_device_add:2162
[ 0.651859] pci_configure_device:1891
[ 0.652059] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=8
[ 0.652070] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=16
[ 0.652104] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=24
[ 0.652115] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=32
[ 0.652125] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=40
[ 0.652134] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=48
[ 0.652142] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=56
[ 0.652151] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=64
[ 0.652159] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=72
[ 0.652168] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=80
[ 0.652177] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=88
[ 0.652185] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=96
[ 0.652193] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=104
[ 0.652202] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=112
[ 0.652210] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=120
[ 0.652218] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=128
[ 0.652227] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=136
[ 0.652235] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=144
[ 0.652244] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=152
[ 0.652252] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=160
[ 0.652261] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=168
[ 0.652269] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=176
[ 0.652277] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=184
[ 0.652286] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=192
[ 0.652294] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=200
[ 0.652303] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=208
[ 0.652311] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=216
[ 0.652320] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=224
[ 0.652328] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=232
[ 0.652336] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=240
[ 0.652345] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=248
[ 0.652358] pcibios_fixup_bus:294
[ 0.652377] pci_scan_bridge:997
[ 0.654513] pci_scan_bridge:1014 - max=0, pass=0, primary=0, secondary=1, subordinate=255
[ 0.654524] pci_scan_bridge:1042-2 - pass=0, broken=0
[ 0.654533] pci_scan_bridge:1061-1 - child bus not found. adding new child bus.
[ 0.654540] pci_add_new_bus:956
[ 0.654546] pci_alloc_child_bus:886
[ 0.654629] pci_scan_child_bus:2509
[ 0.654652] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.654661] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.654837] pci_read_bases:325
[ 0.655048] pci_device_add:2162
[ 0.655056] pci_configure_device:1891
[ 0.655622] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.655632] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.655801] pci_read_bases:325
[ 0.656009] pci_device_add:2162
[ 0.656017] pci_configure_device:1891
[ 0.656564] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=2
[ 0.656573] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656589] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=3
[ 0.656596] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656610] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=4
[ 0.656618] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656632] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=5
[ 0.656640] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656653] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=6
[ 0.656661] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656675] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=7
[ 0.656682] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.656696] pcibios_fixup_bus:294
[ 0.656759] pci_scan_bridge:1073-1 - bus scan completed. cmax=1
[ 0.656768] pci_scan_bridge:1080, cmax=1, max=255, subordinate=255
[ 0.656778] pci_scan_child_bus:2540, pass=0, bridge scan completed. num of subordinate buses=255
[ 0.656785] pci_scan_bridge:997
[ 0.658920] pci_scan_bridge:1014 - max=255, pass=1, primary=0, secondary=1, subordinate=255
[ 0.658932] pci_scan_bridge:1042-2 - pass=1, broken=0
[ 0.658939] pci_scan_bridge:1049-1 - goto out
[ 0.658948] pci_scan_child_bus:2540, pass=1, bridge scan completed. num of subordinate buses=255
[ 0.658962] pci_scan_root_bus_bridge:2721, root bus scan completed. max=255
[ 0.658969] dw_pcie_host_init:434 - root bridge scan completed. ret=0
[ 0.658976] pci_bus_size_bridges:1346
[ 0.658993] pci_bus_assign_resources:1433
[ 0.659002] pci_assign_resource:320
[ 0.659024] pci_assign_resource:320
[ 0.659049] pdev_assign_fixed_resources:1376
[ 0.659056] pci_assign_resource:320
[ 0.659113] pci_assign_resource:320
[ 0.659166] pci_assign_resource:320
[ 0.659219] pci_assign_resource:320
[ 0.659271] pci_assign_resource:320
[ 0.659325] pdev_assign_fixed_resources:1376
[ 0.659330] pdev_assign_fixed_resources:1376
[ 0.659337] pci_setup_bridge:706
[ 0.659355] pci_setup_bridge_io:595
[ 0.659362] pci_setup_bridge_mmio:630
[ 0.659370] pci_setup_bridge_mmio_pref:650
[ 0.659391] pcie_bus_configure_settings:2462
[ 0.659398] pcie_bus_configure_set:2433
[ 0.659405] pci_walk_bus:389
[ 0.659410] pcie_bus_configure_set:2433
[ 0.659419] pcie_bus_configure_set:2433
[ 0.659426] pci_bus_add_devices:349
[ 0.659430] pci_bus_add_device:314
[ 0.659557] local_pci_probe:295
[ 0.659712] pci_walk_bus:389
[ 0.659828] pci_walk_bus:389
[ 0.659924] pci_bus_add_devices:349
[ 0.659929] pci_bus_add_device:314
[ 0.659951] pci_bus_add_device:314
[ 0.659966] dw_pcie_host_init:450
[ 0.659973] dra7xx_add_pcie_port:527 ret=0
[ 0.659981] dra7xx_pcie_probe:797 ret=0

FAILURE case:
-------------
[ 0.595213] dra7xx_pcie_probe:678
[ 0.597375] dra7xx_pcie_enable_phy:562 ret=0
[ 0.599459] dra7xx_pcie_enable_phy:568 ret=0
[ 0.601505] dra7xx_pcie_enable_phy:574 ret=0
[ 0.603532] dra7xx_pcie_probe:752 ret=0
[ 0.607583] dra7xx_pcie_probe:764 ret=0
[ 0.611687] dra7xx_pcie_unaligned_memaccess:645, args.args[0]=20, args.args[1]=1, args.args[1]=1
[ 0.611702] dra7xx_add_pcie_port:502
[ 0.611799] dw_pcie_host_init:297
[ 0.611809] pci_alloc_host_bridge:541
[ 0.612635] dw_pcie_setup_rc:606
[ 0.612655] dra7xx_pcie_host_init:236 ret=0
[ 0.618722] dra7xx_pcie_host_init:250 ret=0
[ 0.618736] pci_scan_root_bus_bridge:2688
[ 0.618747] pci_scan_root_bus_bridge:2701, found=1
[ 0.618755] pci_register_host_bridge:774
[ 0.618911] pci_scan_child_bus:2509
[ 0.618931] pci_bus_read_dev_vendor_id:2019 - initial dv=8888104C, d=8888, v=104C, devfn=0
[ 0.618941] pci_bus_read_dev_vendor_id:2034 - final dv=8888104C, d=8888, v=104C, devfn=0
[ 0.618988] pci_setup_device:1555 - this is a bridge device.
[ 0.618999] pci_read_bases:325
[ 0.619031] set_pcie_hotplug_bridge:1269
[ 0.619043] pci_device_add:2162
[ 0.619050] pci_configure_device:1891
[ 0.619263] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=8
[ 0.619275] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=16
[ 0.619284] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=24
[ 0.619293] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=32
[ 0.619302] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=40
[ 0.619311] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=48
[ 0.619320] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=56
[ 0.619328] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=64
[ 0.619337] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=72
[ 0.619346] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=80
[ 0.619354] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=88
[ 0.619363] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=96
[ 0.619372] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=104
[ 0.619381] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=112
[ 0.619390] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=120
[ 0.619399] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=128
[ 0.619407] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=136
[ 0.619416] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=144
[ 0.619425] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=152
[ 0.619433] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=160
[ 0.619442] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=168
[ 0.619450] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=176
[ 0.619459] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=184
[ 0.619467] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=192
[ 0.619476] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=200
[ 0.619485] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=208
[ 0.619493] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=216
[ 0.619502] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=224
[ 0.619511] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=232
[ 0.619519] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=240
[ 0.619528] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=248
[ 0.619542] pcibios_fixup_bus:294
[ 0.619561] pci_scan_bridge:997
[ 0.621783] pci_scan_bridge:1014 - max=0, pass=0, primary=0, secondary=1, subordinate=255
[ 0.621796] pci_scan_bridge:1042-2 - pass=0, broken=0
[ 0.621804] pci_scan_bridge:1061-1 - child bus not found. adding new child bus.
[ 0.621811] pci_add_new_bus:956
[ 0.621818] pci_alloc_child_bus:886
[ 0.621909] pci_scan_child_bus:2509
[ 0.621935] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.621944] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=0
[ 0.622120] pci_read_bases:325
[ 0.622334] pci_device_add:2162
[ 0.622341] pci_configure_device:1891
[ 0.622911] pci_bus_read_dev_vendor_id:2019 - initial dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.622921] pci_bus_read_dev_vendor_id:2034 - final dv=B34014E4, d=B340, v=14E4, devfn=1
[ 0.623092] pci_read_bases:325
[ 0.623302] pci_device_add:2162
[ 0.623309] pci_configure_device:1891
[ 0.623864] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=2
[ 0.623873] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623888] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=3
[ 0.623896] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623911] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=4
[ 0.623918] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623932] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=5
[ 0.623940] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623954] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=6
[ 0.623961] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623975] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=7
[ 0.623982] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.623997] pcibios_fixup_bus:294
[ 0.624060] pci_scan_bridge:1073-1 - bus scan completed. cmax=1
[ 0.624069] pci_scan_bridge:1080, cmax=1, max=255, subordinate=255
[ 0.624079] pci_scan_child_bus:2540, pass=0, bridge scan completed. num of subordinate buses=255
[ 0.624086] pci_scan_bridge:997
[ 0.626224] pci_scan_bridge:1014 - max=255, pass=1, primary=0, secondary=1, subordinate=255
[ 0.626235] pci_scan_bridge:1042-2 - pass=1, broken=0
[ 0.626243] pci_scan_bridge:1049-1 - goto out
[ 0.626252] pci_scan_child_bus:2540, pass=1, bridge scan completed. num of subordinate buses=255
[ 0.626266] pci_scan_root_bus_bridge:2721, root bus scan completed. max=255
[ 0.626274] dw_pcie_host_init:434 - root bridge scan completed. ret=0
[ 0.626281] pci_bus_size_bridges:1346
[ 0.626299] pci_bus_assign_resources:1433
[ 0.626307] pci_assign_resource:320
[ 0.626330] pci_assign_resource:320
[ 0.626355] pdev_assign_fixed_resources:1376
[ 0.626362] pci_assign_resource:320
[ 0.626419] pci_assign_resource:320
[ 0.626473] pci_assign_resource:320
[ 0.626525] pci_assign_resource:320
[ 0.626578] pci_assign_resource:320
[ 0.626631] pdev_assign_fixed_resources:1376
[ 0.626636] pdev_assign_fixed_resources:1376
[ 0.626644] pci_setup_bridge:706
[ 0.626660] pci_setup_bridge_io:595
[ 0.626667] pci_setup_bridge_mmio:630
[ 0.626675] pci_setup_bridge_mmio_pref:650
[ 0.626696] pcie_bus_configure_settings:2462
[ 0.626703] pcie_bus_configure_set:2433
[ 0.626710] pci_walk_bus:389
[ 0.626715] pcie_bus_configure_set:2433
[ 0.626724] pcie_bus_configure_set:2433
[ 0.626730] pci_bus_add_devices:349
[ 0.626735] pci_bus_add_device:314
[ 0.626875] local_pci_probe:295
[ 0.627034] pci_walk_bus:389
[ 0.627156] pci_walk_bus:389
[ 0.627252] pci_bus_add_devices:349
[ 0.627257] pci_bus_add_device:314
[ 0.627278] pci_bus_add_device:314
[ 0.627294] dw_pcie_host_init:450
[ 0.627302] dra7xx_add_pcie_port:527 ret=0
[ 0.627310] dra7xx_pcie_probe:797 ret=0
[ 0.627422] dra7xx_pcie_probe:678
[ 0.629571] dra7xx_pcie_enable_phy:562 ret=0
[ 0.631759] dra7xx_pcie_enable_phy:568 ret=0
[ 0.633805] dra7xx_pcie_enable_phy:574 ret=0
[ 0.635828] dra7xx_pcie_probe:752 ret=0
[ 0.639876] dra7xx_pcie_probe:764 ret=0
[ 0.643929] dra7xx_pcie_unaligned_memaccess:645, args.args[0]=20, args.args[1]=1, args.args[1]=1
[ 0.643942] dra7xx_add_pcie_port:502
[ 0.644036] dw_pcie_host_init:297
[ 0.644045] pci_alloc_host_bridge:541
[ 0.644849] dw_pcie_setup_rc:606
[ 0.644867] dra7xx_pcie_host_init:236 ret=0
[ 0.650933] dra7xx_pcie_host_init:250 ret=0
[ 0.650941] pci_scan_root_bus_bridge:2688
[ 0.650951] pci_scan_root_bus_bridge:2701, found=1
[ 0.650958] pci_register_host_bridge:774
[ 0.651103] pci_scan_child_bus:2509
[ 0.651122] pci_bus_read_dev_vendor_id:2019 - initial dv=8888104C, d=8888, v=104C, devfn=0
[ 0.651132] pci_bus_read_dev_vendor_id:2034 - final dv=8888104C, d=8888, v=104C, devfn=0
[ 0.651174] pci_setup_device:1555 - this is a bridge device.
[ 0.651184] pci_read_bases:325
[ 0.651215] set_pcie_hotplug_bridge:1269
[ 0.651227] pci_device_add:2162
[ 0.651234] pci_configure_device:1891
[ 0.651434] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=8
[ 0.651445] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=16
[ 0.651455] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=24
[ 0.651464] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=32
[ 0.651473] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=40
[ 0.651482] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=48
[ 0.651491] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=56
[ 0.651500] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=64
[ 0.651508] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=72
[ 0.651517] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=80
[ 0.651526] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=88
[ 0.651535] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=96
[ 0.651543] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=104
[ 0.651552] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=112
[ 0.651561] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=120
[ 0.651570] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=128
[ 0.651579] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=136
[ 0.651587] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=144
[ 0.651596] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=152
[ 0.651604] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=160
[ 0.651613] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=168
[ 0.651622] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=176
[ 0.651630] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=184
[ 0.651639] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=192
[ 0.651670] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=200
[ 0.651681] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=208
[ 0.651691] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=216
[ 0.651700] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=224
[ 0.651709] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=232
[ 0.651718] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=240
[ 0.651727] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=248
[ 0.651741] pcibios_fixup_bus:294
[ 0.651760] pci_scan_bridge:997
[ 0.653895] pci_scan_bridge:1014 - max=0, pass=0, primary=0, secondary=1, subordinate=255
[ 0.653907] pci_scan_bridge:1042-2 - pass=0, broken=0
[ 0.653915] pci_scan_bridge:1061-1 - child bus not found. adding new child bus.
[ 0.653922] pci_add_new_bus:956
[ 0.653929] pci_alloc_child_bus:886
[ 0.654011] pci_scan_child_bus:2509
[ 0.673219] omap_l3_noc 44000000.ocp: L3 application error: target 5 mod:1 (unclearable)
[ 0.673235] omap_l3_noc 44000000.ocp: L3 debug error: target 5 mod:1 (unclearable)
[ 0.673253] pci_bus_read_dev_vendor_id:2019 - initial dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=0
[ 0.673262] pci_bus_read_dev_vendor_id:2025 - device or function not present. dv=FFFFFFFF
[ 0.673276] pcibios_fixup_bus:294
[ 0.673296] pci_scan_bridge:1073-1 - bus scan completed. cmax=1
[ 0.673304] pci_scan_bridge:1080, cmax=1, max=255, subordinate=255
[ 0.673314] pci_scan_child_bus:2540, pass=0, bridge scan completed. num of subordinate buses=255
[ 0.673321] pci_scan_bridge:997
[ 0.675457] pci_scan_bridge:1014 - max=255, pass=1, primary=0, secondary=0, subordinate=0
[ 0.675468] pci_scan_bridge:1082-3 - pass=1, broken=0
[ 0.675478] pci_scan_child_bus:2509
[ 0.675495] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=8
[ 0.675505] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=16
[ 0.675514] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=24
[ 0.675522] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=32
[ 0.675531] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=40
[ 0.675539] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=48
[ 0.675548] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=56
[ 0.675557] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=64
[ 0.675565] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=72
[ 0.675574] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=80
[ 0.675582] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=88
[ 0.675591] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=96
[ 0.675599] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=104
[ 0.675608] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=112
[ 0.675617] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=120
[ 0.675625] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=128
[ 0.675634] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=136
[ 0.675642] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=144
[ 0.675650] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=152
[ 0.675659] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=160
[ 0.675668] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=168
[ 0.675676] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=176
[ 0.675685] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=184
[ 0.675693] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=192
[ 0.675701] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=200
[ 0.675710] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=208
[ 0.675718] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=216
[ 0.675727] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=224
[ 0.675736] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=232
[ 0.675744] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=240
[ 0.675753] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=248
[ 0.675759] pci_scan_bridge:997
[ 0.677893] pci_scan_bridge:1014 - max=0, pass=0, primary=0, secondary=0, subordinate=255
[ 0.677908] pci_scan_bridge:1028-1 - pass=0, broken=1
[ 0.677919] pci_scan_bridge:1082-3 - pass=0, broken=1
[ 0.677926] pci_scan_bridge:1097-2 - goto out
[ 0.677935] pci_scan_child_bus:2540, pass=0, bridge scan completed. num of subordinate buses=0
[ 0.677942] pci_scan_bridge:997
[ 0.680074] pci_scan_bridge:1014 - max=0, pass=1, primary=0, secondary=0, subordinate=0
[ 0.680085] pci_scan_bridge:1082-3 - pass=1, broken=0
[ 0.680094] pci_scan_child_bus:2509
[ 0.680111] pci_bus_read_dev_vendor_id:2016 - failed. dv=FFFFFFFF, d=FFFF, v=FFFF, devfn=0
[ 0.680126] pci_scan_bridge:1141-2 - bus scan completed. max=1
[ 0.680146] pci_scan_child_bus:2540, pass=1, bridge scan completed. num of subordinate buses=1
[ 0.680160] pci_scan_bridge:1141-2 - bus scan completed. max=1
[ 0.680178] pci_scan_child_bus:2540, pass=1, bridge scan completed. num of subordinate buses=1
[ 0.680192] pci_scan_root_bus_bridge:2721, root bus scan completed. max=1
[ 0.680199] dw_pcie_host_init:434 - root bridge scan completed. ret=0
[ 0.680205] pci_bus_size_bridges:1346
[ 0.680220] pci_bus_assign_resources:1433
[ 0.680228] pci_assign_resource:320
[ 0.680256] pdev_assign_fixed_resources:1376
[ 0.680261] pci_setup_bridge:706
[ 0.680278] pci_setup_bridge_io:595
[ 0.680285] pci_setup_bridge_mmio:630
[ 0.680292] pci_setup_bridge_mmio_pref:650
[ 0.680303] pcie_bus_configure_settings:2462
[ 0.680312] pcie_bus_configure_set:2433
[ 0.680318] pci_walk_bus:389
[ 0.680323] pci_bus_add_devices:349
[ 0.680330] pci_bus_add_device:314
[ 0.680453] local_pci_probe:295
[ 0.680618] pci_walk_bus:389
[ 0.680731] pci_walk_bus:389
[ 0.680825] pci_bus_add_devices:349
[ 0.680830] dw_pcie_host_init:450
[ 0.680839] dra7xx_add_pcie_port:527 ret=0
[ 0.680847] dra7xx_pcie_probe:797 ret=0

---------------------------------------------

Thanks,

Jitesh