XIO2001 PCIe-to-PCI bridge is not detected on custom iMX6Q board
From: Roberto Fichera <hidden>
Date: 2016-02-05 14:59:21
Hi All,
I'm trying to get my custom board, based on iMX6Q SoC, to detect a TI XIO2001 PCIe-to-PCI bridge without
success up to now. PCI Kernel configuration looks
CONFIG_PCI_QUIRKS=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_DOMAINS_GENERIC=y
CONFIG_PCI_SYSCALL=y
CONFIG_PCI_MSI=y
CONFIG_PCI_ATS=y
CONFIG_PCI_PRI=y
CONFIG_PCI_PASID=y
CONFIG_PCIE_DW=y
CONFIG_PCI_IMX6=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIEAER=y
CONFIG_PCIEAER_INJECT=y
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
CONFIG_PCIE_PME=y
I'm getting the log below when booting a kernel v4.4
[ 0.236822] PCI host bridge /soc/pcie at 0x01000000 ranges:
[ 0.236844] No bus range found for /soc/pcie at 0x01000000, using [bus 00-ff]
[ 0.236891] err 0x01f00000..0x01f7ffff -> 0x01f00000
[ 0.236929] IO 0x01f80000..0x01f8ffff -> 0x00000000
[ 0.237016] MEM 0x01000000..0x01efffff -> 0x01000000
[ 0.557284] *imx6q-pcie 1ffc000.pcie: phy link never came up*
[ 0.557874] imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00
[ 0.557902] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.557920] pci_bus 0000:00: root bus resource [??? 0x01f00000-0x01f7ffff flags 0x0]
[ 0.557995] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 0.558012] pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
[ 0.558137] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
[ 0.558209] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[ 0.558248] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff pref]
[ 0.558448] pci 0000:00:00.0: supports D1
[ 0.558463] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
[ 0.559240] PCI: bus0: Fast back to back transfers disabled
[ 0.559574] PCI: bus1: Fast back to back transfers enabled
[ 0.559736] pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-0x010fffff]
[ 0.559764] pci 0000:00:00.0: BAR 6: assigned [mem 0x01100000-0x0110ffff pref]
[ 0.559786] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.560561] pcieport 0000:00:00.0: Signaling PME through PCIe PME interrupt
[ 0.560591] pcie_pme 0000:00:00.0:pcie01: service driver pcie_pme loaded
[ 0.561007] aer 0000:00:00.0:pcie02: service driver aer loaded
root at voneus-janas-imx6q:~# lspci -vvv
00:00.0 PCI bridge: Synopsys, Inc. Device 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
Interrupt: pin A routed to IRQ 290
Region 0: Memory@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@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 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable+ 64bit+
Address: 000000007d8b2000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Root Port (Slot-), MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0
ExtTag- RBE+
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, Exit Latency L0s <1us, L1 <8us
ClockPM- Surprise- LLActRep+ BwNot- ASPMOptComp-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- 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+, LTR-, OBFF Not Supported ARIFwd-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1-
EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
Capabilities: [100 v1] 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 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
Status: NegoPending+ InProgress-
Kernel driver in use: pcieport
Do you have any suggestion how to solve this?
Thanks in advance,
Roberto Fichera.