PCIe trouble on imx6q
Hong-Xing.Zhu at freescale.com
Hong-Xing.Zhu at freescale.com
Thu Feb 6 23:46:41 EST 2014
Hi:
> -----Original Message-----
> From: Kamel BOUHARA [mailto:k.bouhara at gmail.com]
> Sent: Tuesday, February 04, 2014 5:10 PM
> To: Bjorn Helgaas
> Cc: linux-pci at vger.kernel.org; linux-arm; Zhu Richard-R65037; Shawn Guo
> Subject: Re: PCIe trouble on imx6q
>
> 2014-01-29 Kamel BOUHARA <k.bouhara at gmail.com>:
> > 2014-01-29 Bjorn Helgaas <bhelgaas at google.com>:
> >> [+cc linux-arm, Richard, Shawn (please keep the cc list)]
> >>
> >> On Wed, Jan 29, 2014 at 2:28 AM, Kamel BOUHARA <k.bouhara at gmail.com> wrote:
> >>> ---------- Forwarded message ----------
> >>> From: Kamel BOUHARA <k.bouhara at gmail.com>
> >>> Date: 2014-01-29
> >>> Subject: Re: PCIe trouble on imx6q
> >>> To: Bjorn Helgaas <bhelgaas at google.com>
> >>>
> >>>
> >>> 2014-01-28 Bjorn Helgaas <bhelgaas at google.com>:
> >>>> [+cc Richard, Shawn, linux-arm-kernel (all from MAINTAINERS)]
> >>>>
> >>>> On Tue, Jan 28, 2014 at 1:02 AM, Kamel BOUHARA <k.bouhara at gmail.com>
> wrote:
> >>>>> Hello,
> >>>>>
> >>>>> Im getting trouble with kernel 3.13 at boot time, the pcie link
> >>>>> failed to get up with the following log:
> >>>>> ------------[ cut here ]------------
> >>>>> WARNING: CPU: 0 PID: 1 at drivers/gpio/gpiolib.c:159
> >>>>> gpio_to_desc+0x34/0x48() invalid GPIO -2 Modules linked in:
> >>>>> CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0+ #4
> >>>>> Backtrace:
> >>>>> [<8001217c>] (dump_backtrace) from [<80012460>]
> >>>>> (show_stack+0x18/0x1c)
> >>>>> r6:802b9548 r5:00000000 r4:808d3060 r3:00000000 [<80012448>]
> >>>>> (show_stack) from [<806414fc>] (dump_stack+0x84/0x9c) [<80641478>]
> >>>>> (dump_stack) from [<800289f8>] (warn_slowpath_common+0x70/0x94)
> >>>>> r5:00000009 r4:bf05bcb0
> >>>>> [<80028988>] (warn_slowpath_common) from [<80028a54>]
> >>>>> (warn_slowpath_fmt+0x38/0x40)
> >>>>> r8:01f00000 r7:00000000 r6:0011cc11 r5:808b68c0 r4:bf24fa30
> >>>>> [<80028a20>] (warn_slowpath_fmt) from [<802b9548>]
> >>>>> (gpio_to_desc+0x34/0x48) r3:fffffffe r2:807d23fc [<802b9514>]
> >>>>> (gpio_to_desc) from [<802d9de0>] (imx6_pcie_host_init+0x174/0x434)
> >>>>> [<802d9c6c>] (imx6_pcie_host_init) from [<80886dbc>]
> >>>>> (dw_pcie_host_init+0x348/0x41c)
> >>>>> r6:00000000 r5:808d52cc r4:00000020 r3:802d9c6c [<80886a74>]
> >>>>> (dw_pcie_host_init) from [<808871d4>]
> >>>>> (imx6_pcie_probe+0x320/0x3dc)
> >>>>> r10:00000000 r9:000000c4 r8:808d539c r7:bf7e3384 r6:bf24fa30
> >>>>> r5:bf135810
> >>>>> r4:bf24fa10
> >>>>> [<80886eb4>] (imx6_pcie_probe) from [<8034b670>]
> >>>>> (platform_drv_probe+0x20/0x50) r8:808d539c r7:00000000
> >>>>> r6:00000000 r5:808d539c r4:bf135810 [<8034b650>]
> >>>>> (platform_drv_probe) from [<80349c74>]
> >>>>> (driver_probe_device+0x118/0x234)
> >>>>> r5:bf135810 r4:80e526b8
> >>>>> [<80349b5c>] (driver_probe_device) from [<80349e78>]
> >>>>> (__driver_attach+0x9c/0xa0)
> >>>>> r8:80886e90 r7:00000000 r6:bf135844 r5:808d539c r4:bf135810
> >>>>> r3:00000000 [<80349ddc>] (__driver_attach) from [<8034806c>]
> >>>>> (bus_for_each_dev+0x68/0x9c) r6:80349ddc r5:808d539c r4:00000000
> >>>>> r3:00000000 [<80348004>] (bus_for_each_dev) from [<8034972c>]
> >>>>> (driver_attach+0x20/0x28)
> >>>>> r6:808df6a8 r5:bf1f5e00 r4:808d539c [<8034970c>] (driver_attach)
> >>>>> from [<803493b0>] (bus_add_driver+0x148/0x1f4) [<80349268>]
> >>>>> (bus_add_driver) from [<8034a4c8>] (driver_register+0x80/0x100)
> >>>>> r7:8090e640 r6:8090e640 r5:00000005 r4:808d539c [<8034a448>]
> >>>>> (driver_register) from [<8034b63c>]
> >>>>> (__platform_driver_register+0x50/0x64)
> >>>>> r5:00000005 r4:808d5388
> >>>>> [<8034b5ec>] (__platform_driver_register) from [<8034b6e0>]
> >>>>> (platform_driver_probe+0x28/0xac)
> >>>>> [<8034b6b8>] (platform_driver_probe) from [<80886ea8>]
> >>>>> (imx6_pcie_init+0x18/0x24)
> >>>>> r5:00000005 r4:808aa104
> >>>>> [<80886e90>] (imx6_pcie_init) from [<80008978>]
> >>>>> (do_one_initcall+0x100/0x164) [<80008878>] (do_one_initcall) from
> >>>>> [<8085ecc0>]
> >>>>> (kernel_init_freeable+0x10c/0x1d0)
> >>>>> r10:8089e060 r9:000000c4 r8:8089e050 r7:8090e640 r6:8090e640
> >>>>> r5:00000005
> >>>>> r4:808aa104
> >>>>> [<8085ebb4>] (kernel_init_freeable) from [<8063b67c>]
> >>>>> (kernel_init+0x10/0x120)
> >>>>> r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000
> >>>>> r5:8063b66c
> >>>>> r4:00000000
> >>>>> [<8063b66c>] (kernel_init) from [<8000e9c8>]
> >>>>> (ret_from_fork+0x14/0x2c)
> >>>>> r4:00000000 r3:ffffffff
> >>>>> ---[ end trace b5e746dfc2398cd6 ]--- ------------[ cut here
> >>>>> ]------------
> >>>>> WARNING: CPU: 0 PID: 1 at drivers/gpio/gpiolib.c:159
> >>>>> gpio_to_desc+0x34/0x48() invalid GPIO -2 Modules linked in:
> >>>>> CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.13.0+ #4
> >>>>> Backtrace:
> >>>>> [<8001217c>] (dump_backtrace) from [<80012460>]
> >>>>> (show_stack+0x18/0x1c)
> >>>>> r6:802b9548 r5:00000000 r4:808d3060 r3:00000000 [<80012448>]
> >>>>> (show_stack) from [<806414fc>] (dump_stack+0x84/0x9c) [<80641478>]
> >>>>> (dump_stack) from [<800289f8>] (warn_slowpath_common+0x70/0x94)
> >>>>> r5:00000009 r4:bf05bcb0
> >>>>> [<80028988>] (warn_slowpath_common) from [<80028a54>]
> >>>>> (warn_slowpath_fmt+0x38/0x40)
> >>>>> r8:01f00000 r7:00000000 r6:0011cc11 r5:808b68c0 r4:bf24fa30
> >>>>> [<80028a20>] (warn_slowpath_fmt) from [<802b9548>]
> >>>>> (gpio_to_desc+0x34/0x48) r3:fffffffe r2:807d23fc [<802b9514>]
> >>>>> (gpio_to_desc) from [<802d9df8>] (imx6_pcie_host_init+0x18c/0x434)
> >>>>> [<802d9c6c>] (imx6_pcie_host_init) from [<80886dbc>]
> >>>>> (dw_pcie_host_init+0x348/0x41c)
> >>>>> r6:00000000 r5:808d52cc r4:00000020 r3:802d9c6c [<80886a74>]
> >>>>> (dw_pcie_host_init) from [<808871d4>]
> >>>>> (imx6_pcie_probe+0x320/0x3dc)
> >>>>> r10:00000000 r9:000000c4 r8:808d539c r7:bf7e3384 r6:bf24fa30
> >>>>> r5:bf135810
> >>>>> r4:bf24fa10
> >>>>> [<80886eb4>] (imx6_pcie_probe) from [<8034b670>]
> >>>>> (platform_drv_probe+0x20/0x50) r8:808d539c r7:00000000
> >>>>> r6:00000000 r5:808d539c r4:bf135810 [<8034b650>]
> >>>>> (platform_drv_probe) from [<80349c74>]
> >>>>> (driver_probe_device+0x118/0x234)
> >>>>> r5:bf135810 r4:80e526b8
> >>>>> [<80349b5c>] (driver_probe_device) from [<80349e78>]
> >>>>> (__driver_attach+0x9c/0xa0)
> >>>>> r8:80886e90 r7:00000000 r6:bf135844 r5:808d539c r4:bf135810
> >>>>> r3:00000000 [<80349ddc>] (__driver_attach) from [<8034806c>]
> >>>>> (bus_for_each_dev+0x68/0x9c) r6:80349ddc r5:808d539c r4:00000000
> >>>>> r3:00000000 [<80348004>] (bus_for_each_dev) from [<8034972c>]
> >>>>> (driver_attach+0x20/0x28)
> >>>>> r6:808df6a8 r5:bf1f5e00 r4:808d539c [<8034970c>] (driver_attach)
> >>>>> from [<803493b0>] (bus_add_driver+0x148/0x1f4) [<80349268>]
> >>>>> (bus_add_driver) from [<8034a4c8>] (driver_register+0x80/0x100)
> >>>>> r7:8090e640 r6:8090e640 r5:00000005 r4:808d539c [<8034a448>]
> >>>>> (driver_register) from [<8034b63c>]
> >>>>> (__platform_driver_register+0x50/0x64)
> >>>>> r5:00000005 r4:808d5388
> >>>>> [<8034b5ec>] (__platform_driver_register) from [<8034b6e0>]
> >>>>> (platform_driver_probe+0x28/0xac)
> >>>>> [<8034b6b8>] (platform_driver_probe) from [<80886ea8>]
> >>>>> (imx6_pcie_init+0x18/0x24)
> >>>>> r5:00000005 r4:808aa104
> >>>>> [<80886e90>] (imx6_pcie_init) from [<80008978>]
> >>>>> (do_one_initcall+0x100/0x164) [<80008878>] (do_one_initcall) from
> >>>>> [<8085ecc0>]
> >>>>> (kernel_init_freeable+0x10c/0x1d0)
> >>>>> r10:8089e060 r9:000000c4 r8:8089e050 r7:8090e640 r6:8090e640
> >>>>> r5:00000005
> >>>>> r4:808aa104
> >>>>> [<8085ebb4>] (kernel_init_freeable) from [<8063b67c>]
> >>>>> (kernel_init+0x10/0x120)
> >>>>> r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000
> >>>>> r5:8063b66c
> >>>>> r4:00000000
> >>>>> [<8063b66c>] (kernel_init) from [<8000e9c8>]
> >>>>> (ret_from_fork+0x14/0x2c)
> >>>>> r4:00000000 r3:ffffffff
> >>>>> ---[ end trace b5e746dfc2398cd7 ]--- imx6q-pcie 1ffc000.pcie: phy
> >>>>> link never came up 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]
> >>>>
> >>>> Not related to the GPIO/link problem, but something's wrong here --
> >>>> the host bridge driver should be telling us what bus numbers are
> >>>> behind the host bridge. Since it didn't, the PCI core had to guess.
> >>>>
> >>>>> PCI: bus0: Fast back to back transfers disabled
> >>>>> PCI: bus1: Fast back to back transfers enabled pci 0000:00:00.0:
> >>>>> BAR 0: assigned [mem 0x01000000-0x010fffff] pci 0000:00:00.0: BAR
> >>>>> 6: assigned [mem 0x01100000-0x0110ffff pref] pci 0000:00:00.0: PCI
> >>>>> bridge to [bus 01] pci 0000:00:00.0: PCI bridge to [bus 01]
> >>>>>
> >>>>> Please, any help is welcome.
> >>>>> Regards,
> >>>>> Kamel.B
> >>>>> --
> >>>>> To unsubscribe from this list: send the line "unsubscribe
> >>>>> linux-pci" in the body of a message to majordomo at vger.kernel.org
> >>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
> >>>
> >>> So I suppose, this is not a hardware issue rather a bad configuration ?
> >>> Maybe the following log from lspci will be helpful ?
> >>
> >> It looks like a configuration issue or an imx6q host bridge issue.
> >> In either case, it looks like something *before* we get to PCIe, so
> >> something like your DT description of the host bridge is more likely
> >> to be useful.
> >>
> >>> root at phyFLEX-i:~ lspci -vvv
> >>> 00:00.0 PCI bridge: Device 16c3:abcd (rev 01) (prog-if 00 [Normal decode])
> >>> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> >>> ParErr+ Stepping- SERR+ FastB2B- DisINTx+
> >>> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast
> >>> >TAbort-
> >>> <TAbort- <MAbort- >SERR- <PERR- INTx-
> >>> Latency: 0, Cache Line Size: 64 bytes
> >>> Region 0: Memory at 01000000 (32-bit, non-prefetchable) [size=1M]
> >>> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> >>> I/O behind bridge: 0000f000-00000fff
> >>> Memory behind bridge: fff00000-000fffff
> >>> Prefetchable memory behind bridge: fff00000-000fffff
> >>> Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast
> >>> >TAbort-
> >>> <TAbort- <MAbort- <SERR- <PERR-
> >>> [virtual] Expansion ROM at 01100000 [disabled] [size=64K]
> >>> BridgeCtl: Parity+ SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
> >>> PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
> >>> Capabilities: [40] Power Management version 3
> >>> Flags: PMEClk- DSI- D1+ D2- AuxCurrent=375mA
> >>> PME(D0+,D1+,D2-,D3hot+,D3cold+)
> >>> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
> >>> Capabilities: [50] MSI: Mask+ 64bit+ Count=1/1 Enable+
> >>> Address: 0000000090000000 Data: 0000
> >>> Masking: 00000000 Pending: 00000000
> >>> Capabilities: [70] Express (v2) Root Port (Slot-), MSI 00
> >>> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency
> >>> L0s <64ns, L1 <1us
> >>> ExtTag- RBE+ FLReset-
> >>> DevCtl: Report errors: Correctable+ Non-Fatal+
> >>> Fatal+
> >>> Unsupported+
> >>> RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
> >>> MaxPayload 128 bytes, MaxReadReq 512 bytes
> >>> DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
> >>> AuxPwr+ TransPend-
> >>> LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s
> >>> L1, Latency L0 <1us, L1 <8us
> >>> ClockPM- Surprise- LLActRep+ BwNot-
> >>> LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain-
> CommClk-
> >>> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
> >>> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train-
> >>> SlotClk+ DLActive- BWMgmt- ABWMgmt-
> >>> RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal-
> >>> PMEIntEna+ CRSVisible-
> >>> RootCap: CRSVisible-
> >>> RootSta: PME ReqID 0000, PMEStatus- PMEPending-
> >>> DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
> ARIFwd-
> >>> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
> ARIFwd-
> >>> LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance-
> >>> SpeedDis-, Selectable De-emphasis: -6dB
> >>> Transmit Margin: Normal Operating Range,
> >>> EnterModifiedCompliance- ComplianceSOS-
> >>> Compliance De-emphasis: -6dB
> >>> LnkSta2: Current De-emphasis Level: -3.5dB
> >>> Capabilities: [100] Advanced Error Reporting
> >>> UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> >>> UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
> >>> UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt-
> >>> UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
> >>> UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt-
> >>> UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
> >>> CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> NonFatalErr-
> >>> CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout-
> NonFatalErr+
> >>> AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+
> ChkEn-
> >>> Capabilities: [140] Virtual Channel <?>
> >>> Kernel driver in use: pcieport
> >>> --
> >>> To unsubscribe from this list: send the line "unsubscribe linux-pci"
> >>> in the body of a message to majordomo at vger.kernel.org More majordomo
> >>> info at http://vger.kernel.org/majordomo-info.html
> >
> > Ok, actually I didn't get the host bridge set properly for my board,
> > here is my DT:
> >
> >
> > /dts-v1/;
> > #include "imx6q-phytec-pfla02.dtsi"
> >
> > / {
> > model = "Phytec phyFLEX-i.MX6 Quad Carrier-Board";
> > compatible = "phytec,imx6q-pbab01", "phytec,imx6q-pfla02",
> > "fsl,imx6q"; };
> >
> > &fec {
> > status = "okay";
> > };
> >
> > &uart4 {
> > status = "okay";
> > };
> >
> > &usdhc2 {
> > status = "okay";
> > };
> >
> > &usdhc3 {
> > status = "okay";
> > };
> >
> > &pcie {
> > status = "okay";
> > };
> >
> >
> > Can you give me a example of host configuration ?
> >
> >
> > BR, Kamel.B
>
> I finally found that I missed the disable-gpio that has to be at high level:
>
> &pcie {
> /*module pfla02 rev1 */
> #if 0
> reset-gpio = <&gpio2 23 0>; /* active low */
> wake-up-gpio = <&gpio1 7 0>; /* active low */
> disable-gpio = <&gpio1 21 1>; /* active low, don't disable endpoint gpios
> */ #endif #if 1
> /*module pfla02 rev2*/
> reset-gpio = <&gpio2 23 0>;
> wake-up-gpio = <&gpio1 7 0>;
> disable-gpio = <&gpio4 17 1>;
> #endif
> };
>
> But Im still stuck on the bus ressource affectation, Bjorn Helgaas said that
> normally it is auto affected by the host bridge driver ?
> Is there a patch to fix this ?
>
> imx6q-pcie 1ffc000.pcie: reset-gpio number is 55 imx6q-pcie 1ffc000.pcie:
> power-on-gpio number is -2 imx6q-pcie 1ffc000.pcie: wake-up-gpio number is 7
> imx6q-pcie 1ffc000.pcie: disable-gpio number is 113 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 9: assigned [mem
> 0x01100000-0x011fffff pref] pci 0000:00:00.0: BAR 6: assigned [mem 0x01200000-
> 0x0120ffff pref] pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-0x01100fff
> 64bit pref] pci 0000:00:00.0: PCI bridge to [bus 01]
> pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff pref]
> pci 0000:00:00.0: PCI bridge to [bus 01]
> pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff pref]
>
[Richard] Tested pci-v3.13-fixes-2 on imx6q sabresd board, the dts modifications of imx6qdl-sabresd.dtsi
are listed below:
&pcie {
power-on-gpio = <&gpio3 19 0>;
reset-gpio = <&gpio7 12 0>;
status = "okay";
};
Logs:
[ 0.327515] cfg80211: Calling CRDA to update world regulatory domain
[ 0.329373] Switched to clocksource mxc_timer1
[ 0.462992] PCI host bridge to bus 0000:00
[ 0.463012] pci_bus 0000:00: root bus resource [io 0x1000-0x10000]
[ 0.463026] pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
[ 0.463050] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[ 0.463190] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
[ 0.463255] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[ 0.463309] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff pref]
[ 0.463481] pci 0000:00:00.0: supports D1
[ 0.463494] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
[ 0.464120] PCI: bus0: Fast back to back transfers disabled
[ 0.464684] pci 0000:01:00.0: [1033:0194] type 00 class 0x0c0330
[ 0.464933] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00001fff 64bit]
[ 0.465892] pci 0000:01:00.0: PME# supported from D0 D3hot
[ 0.466758] PCI: bus1: Fast back to back transfers disabled
[ 0.466778] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 0.466802] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01
[ 0.466933] pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-0x010fffff]
[ 0.466960] pci 0000:00:00.0: BAR 8: assigned [mem 0x01100000-0x011fffff]
[ 0.466974] pci 0000:00:00.0: BAR 6: assigned [mem 0x01200000-0x0120ffff pref]
[ 0.466992] pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-0x01101fff 64bit]
[ 0.467141] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.467165] pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff]
[ 0.467208] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.467231] pci 0000:00:00.0: bridge window [mem 0x01100000-0x011fffff]
[ 0.467265] pci_bus 0000:00: resource 4 [io 0x1000-0x10000]
[ 0.467277] pci_bus 0000:00: resource 5 [mem 0x01000000-0x01efffff]
[ 0.467288] pci_bus 0000:01: resource 1 [mem 0x01100000-0x011fffff]
[ 0.486674] NET: Registered protocol family 2
root at imx6qdlsolo:~# lspci -v
00:00.0 PCI bridge: Device 16c3:abcd (rev 01) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Memory at 01000000 (32-bit, non-prefetchable) [size=1M]
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: 01100000-011fffff
[virtual] Expansion ROM at 01200000 [disabled] [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [70] Express Root Port (Slot-), MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Kernel driver in use: pcieport
lspci: Unable to load libkmod resources: error -12
01:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03) (prog-if 30 [XHCI])
Flags: bus master, fast devsel, latency 0, IRQ 155
Memory at 01100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [50] Power Management version 3
Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+
Capabilities: [90] MSI-X: Enable- Count=8 Masked-
Capabilities: [a0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff
Capabilities: [150] Latency Tolerance Reporting
Kernel driver in use: xhci_hcd
root at imx6qdlsolo:~# uname -a
Linux imx6qdlsolo 3.13.0-rc1+ #409 SMP Fri Feb 7 11:43:01 CST 2014 armv7l GNU/Linux
root at imx6qdlsolo:~#
> BR, Kamel B.
>
Best Regards
Richard Zhu
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