Hi Krishnan P,
Did you enable RC or EP option in the kernel configuration when build the kernel image?
These two options are only used in imx6 pcie ep/rc validation system, please disable them if they are enabled in your kernel configuration.
Otherwise, imx6 pcie wouldn't work properly.
based on the 3.10.17 and imx6dl sd, intel iwl633agn wifi card.
Here is the log.
Booting Linux on physical CPU 0x0
Linux version 3.10.17-01767-g97f757e (r65037@shlinux1) (gcc version 4.8.1 (GCC) ) #205 SMP PREEMPT Wed Aug 6 13:25:41 CST 2014
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: Freescale i.MX6 Quad/DualLite (Device Tree), model: Freescale i.MX6 DualLite SABRE Smart Device Board(PFUZE100)
cma: CMA: reserved 320 MiB at 2c000000
Memory policy: ECC disabled, Data cache writealloc
PERCPU: Embedded 8 pages/cpu @813d3000 s8896 r8192 d15680 u32768
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 195072
...
MIPI CSI2 driver module loaded
Advanced Linux Sound Architecture Driver Initialized.
cfg80211: Calling CRDA to update world regulatory domain
pureg-dummy: no parameters
Switching to clocksource mxc_timer1
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io 0x1000-0x10000]
pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
PCI: bus0: Fast back to back transfers disabled
PCI: bus1: Fast back to back transfers disabled
pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-0x010fffff]
pci 0000:00:00.0: BAR 8: assigned [mem 0x01100000-0x011fffff]
pci 0000:00:00.0: BAR 6: assigned [mem 0x01200000-0x0120ffff pref]
pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-0x01101fff 64bit]
pci 0000:00:00.0: PCI bridge to [bus 01]
pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff]
NET: Registered protocol family 2
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
...
udevd[196]: starting version 182
iwlwifi 0000:01:00.0: loaded firmware version 9.221.4.1 build 25532 op_mode iwldvm
iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUG disabled
iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE disabled
iwlwifi 0000:01:00.0: CONFIG_IWLWIFI_P2P enabled
iwlwifi 0000:01:00.0: Detected Intel(R) Centrino(R) Ultimate-N 6300 AGN, REV=0x74
iwlwifi 0000:01:00.0: L1 Disabled; Enabling L0S
EXT2-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended
...
root@imx6qdlsolo:~# lspci
00:00.0 PCI bridge: Device 16c3:abcd (rev 01)
01:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
Hope this will be useful for you.
Best regards!
/Carlos
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