Hi: > -----Original Message----- > From: Kamel BOUHARA [mailto:k.bouhara@xxxxxxxxx] > Sent: Tuesday, February 04, 2014 5:10 PM > To: Bjorn Helgaas > Cc: linux-pci@xxxxxxxxxxxxxxx; linux-arm; Zhu Richard-R65037; Shawn Guo > Subject: Re: PCIe trouble on imx6q > > 2014-01-29 Kamel BOUHARA <k.bouhara@xxxxxxxxx>: > > 2014-01-29 Bjorn Helgaas <bhelgaas@xxxxxxxxxx>: > >> [+cc linux-arm, Richard, Shawn (please keep the cc list)] > >> > >> On Wed, Jan 29, 2014 at 2:28 AM, Kamel BOUHARA <k.bouhara@xxxxxxxxx> wrote: > >>> ---------- Forwarded message ---------- > >>> From: Kamel BOUHARA <k.bouhara@xxxxxxxxx> > >>> Date: 2014-01-29 > >>> Subject: Re: PCIe trouble on imx6q > >>> To: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > >>> > >>> > >>> 2014-01-28 Bjorn Helgaas <bhelgaas@xxxxxxxxxx>: > >>>> [+cc Richard, Shawn, linux-arm-kernel (all from MAINTAINERS)] > >>>> > >>>> On Tue, Jan 28, 2014 at 1:02 AM, Kamel BOUHARA <k.bouhara@xxxxxxxxx> > 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@xxxxxxxxxxxxxxx > >>>>> 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@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@xxxxxxxxxxxxxxx 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@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@imx6qdlsolo:~# uname -a Linux imx6qdlsolo 3.13.0-rc1+ #409 SMP Fri Feb 7 11:43:01 CST 2014 armv7l GNU/Linux root@imx6qdlsolo:~# > BR, Kamel B. > Best Regards Richard Zhu -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
