# Increase BAR size for PCIe C5 x8 Root-Port Controller

**URL:** <https://forums.developer.nvidia.com/t/increase-bar-size-for-pcie-c5-x8-root-port-controller/356933>\
**Category:** Jetson AGX Orin\
**Tags:** resizable-bar, device-tree, pcie\
**Created:** [January 8, 2026, 5:19am UTC](https://forums.developer.nvidia.com/t/increase-bar-size-for-pcie-c5-x8-root-port-controller/356933 "2026-01-08T05:19:59Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dj45](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/dj45/32/529735_2.png) [@dj45](https://forums.developer.nvidia.com/u/dj45)\
**Post date:** [January 8, 2026, 5:19am UTC](https://forums.developer.nvidia.com/t/increase-bar-size-for-pcie-c5-x8-root-port-controller/356933/1 "2026-01-08T05:19:59Z")

</div>

Hi, I’m running a Jetpack 6 R36.4.3 Orin AGX board with a custom carrier, and attaching an external x8 PCIe device that requires a large BAR1 region while the Orin is in root-complex mode. The BAR1 space it requires is larger than the default carveout for the C5 controller (x8 lanes), so PCIe resource allocation fails during enumeration.

For context the end-point device is a L40s Nvidia dGPU and requests a 64GB BAR1 size for its VRAM aperture. I’d previously successfully used a consumer RTX6000 dGPU as well, but this only required a 256MB BAR1 size and therefore worked with the default device tree entry for this C5 controller.

```auto
# dmesg enumeration logs from boot: 
[4.752958] tegra194-pcie 141a0000.pcie: Adding to iommu group 4
[4.865845] tegra194-pcie 141a0000.pcie: host bridge /bus@0/pcie@141a0000 ranges:
[4.865866] tegra194-pcie 141a0000.pcie: MEM 0x2800000000..0x2b27ffffff -> 0x2800000000
[4.865873] tegra194-pcie 141a0000.pcie: MEM 0x2b28000000..0x2b2fffffff -> 0x0040000000
[4.865878] tegra194-pcie 141a0000.pcie: IO 0x003a100000..0x003a1fffff -> 0x003a100000
[4.866785] tegra194-pcie 141a0000.pcie: iATU unroll: enabled
[4.866791] tegra194-pcie 141a0000.pcie: Detected iATU regions: 8 outbound, 2 inbound
[5.072457] tegra194-pcie 141a0000.pcie: Link up
[5.083780] tegra194-pcie 141a0000.pcie: Link up
[5.083825] tegra194-pcie 141a0000.pcie: PCI host bridge to bus 0005:00
[5.083829] pci_bus 0005:00: root bus resource [io 0x300000-0x3fffff] (bus address [0x3a100000-0x3a1fffff])
[5.083831] pci_bus 0005:00: root bus resource [mem 0x2b28000000-0x2b2fffffff] (bus address [0x40000000-0x47ffffff])
[5.083834] pci_bus 0005:00: root bus resource [bus 00-ff]
[5.083836] pci_bus 0005:00: root bus resource [mem 0x2800000000-0x2b27ffffff pref]
[5.083873] pci 0005:00:00.0: [10de:229a] type 01 class 0x060400
[5.084014] pci 0005:00:00.0: PME# supported from D0 D3hot
[5.087540] pci 0005:01:00.0: [10de:26b9] type 00 class 0x030200
[5.087669] pci 0005:01:00.0: reg 0x10: [mem 0x00000000-0x00ffffff]
[5.087766] pci 0005:01:00.0: reg 0x14: [mem 0x00000000-0xfffffffff 64bit pref]
[5.087863] pci 0005:01:00.0: reg 0x1c: [mem 0x00000000-0x01ffffff 64bit pref]
[5.088138] pci 0005:01:00.0: Enabling HDA controller
[5.088906] pci 0005:01:00.0: PME# supported from D0 D3hot
[5.089716] pci 0005:01:00.0: 126.024 Gb/s available PCIe bandwidth, limited by 16.0 GT/s PCIe x8 link at 0005:00:00.0 (capable of 252.048 Gb/s with 16.0 GT/s PCIe x16 link)
[5.092984] pci 0005:00:00.0: BAR 9: no space for [mem size 0x1800000000 64bit pref]
[5.092987] pci 0005:00:00.0: BAR 9: failed to assign [mem size 0x1800000000 64bit pref]
[5.092988] pci 0005:00:00.0: BAR 8: assigned [mem 0x2b28000000-0x2b28ffffff]
[5.092991] pci 0005:01:00.0: BAR 1: no space for [mem size 0x1000000000 64bit pref]
[5.092992] pci 0005:01:00.0: BAR 1: failed to assign [mem size 0x1000000000 64bit pref]
[5.092994] pci 0005:01:00.0: BAR 3: no space for [mem size 0x02000000 64bit pref]
[5.092995] pci 0005:01:00.0: BAR 3: failed to assign [mem size 0x02000000 64bit pref]
[5.092997] pci 0005:01:00.0: BAR 0: assigned [mem 0x2b28000000-0x2b28ffffff]
[5.093020] pci 0005:00:00.0: PCI bridge to [bus 01-ff]
[5.093024] pci 0005:00:00.0: bridge window [mem 0x2b28000000-0x2b28ffffff]
[5.093097] pcieport 0005:00:00.0: Adding to iommu group 4
[5.093172] pcieport 0005:00:00.0: PME: Signaling with IRQ 227
[5.094233] pcieport 0005:00:00.0: AER: enabled with IRQ 227

```

From my understanding, I gather that I need to edit the ‘ranges’ field in the device tree entry for this C5 controller, to allow it to allocate a larger BAR in address space. I want to know how to do so without conflicting with other PCIe controllers or hitting some system limits.

**Some questions:**

**Q1**. Although my EP device requests a 64GB BAR1, lspci shows that it supports smaller sizes. Is there a way on Jetson to force a smaller allocation, e.g: 256MB? Or would this have to be done on the GPU driver side instead of from the Jetson root port?

```auto
# Full lspci output linked at the end: 
$ sudo lspci -vv -s 0005:01:00.0
0005:01:00.0 3D controller: NVIDIA Corporation Device 26b9 (rev a1)
	Subsystem: NVIDIA Corporation Device 1851
	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-
	Interrupt: pin A routed to IRQ 0
	Region 0: Memory at 2b28000000 (32-bit, non-prefetchable) [disabled] [size=16M]
	Region 1: Memory at <unassigned> (64-bit, prefetchable) [disabled]
	Region 3: Memory at <unassigned> (64-bit, prefetchable) [disabled]

Capabilities: [bb0 v1] Physical Resizable BAR
		BAR 0: current size: 16MB, supported: 16MB
		BAR 1: current size: 64GB, supported: 64MB 128MB 256MB 512MB 1GB 2GB 4GB 8GB 16GB 32GB 64GB
		BAR 3: current size: 32MB, supported: 32MB

```

Q2. I notice that the C5 controller address is fixed (e.g: 0x141a0000), but is there a way to change the base address for the BAR1 region, so that it can grow into the higher 64-bit address space and not conflict with the address range of other PCIe controllers in the SoC?

```auto
# Can I relocate this pcie@141a0000 start address after that of the pcie@141e0000 end address to use higher address space without conflict?
2800000000-2b27ffffff : pcie@141a0000
2b28000000-2b2fffffff : pcie@141a0000
  2b28000000-2b28ffffff : PCI Bus 0005:01
    2b28000000-2b28ffffff : 0005:01:00.0

3000000000-3227ffffff : pcie@141e0000
3228000000-322fffffff : pcie@141e0000
  3228000000-32280fffff : PCI Bus 0007:01
    3228000000-3228003fff : 0007:01:00.0
      3228000000-3228003fff : nvme

```

Q3. Is there some upper-limit on Orin for a BAR AMAP? The default for this C5 range was12.6GB, but I couldn’t find why that’s the case.

Q4: I’m assuming that I don’t need a working dGPU driver to get PCIe enumeration / BAR region allocation to succeed. Is this a correct assumption?

Addtional Info:

> **lspci -vvv output**
>
> ```auto
> $ sudo lspci -vv -s 0005:01:00.0
> 0005:01:00.0 3D controller: NVIDIA Corporation Device 26b9 (rev a1)
> Subsystem: NVIDIA Corporation Device 1851
> 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-
> Interrupt: pin A routed to IRQ 0
> Region 0: Memory at 2b28000000 (32-bit, non-prefetchable) [disabled] [size=16M]
> Region 1: Memory at <unassigned> (64-bit, prefetchable) [disabled]
> Region 3: Memory at <unassigned> (64-bit, prefetchable) [disabled]
> Capabilities: [60] Power Management version 3
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
> Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [68] Null
> Capabilities: [78] Express (v2) Legacy Endpoint, MSI 00
> DevCap:	MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
> ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
> DevCtl:	CorrErr- NonFatalErr- FatalErr- UnsupReq-
> RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ FLReset-
> MaxPayload 128 bytes, MaxReadReq 512 bytes
> DevSta:	CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr- TransPend-
> LnkCap:	Port #0, Speed 16GT/s, Width x16, ASPM not supported
> ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
> LnkCtl:	ASPM Disabled; RCB 64 bytes, Disabled- CommClk-
> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
> LnkSta:	Speed 16GT/s (ok), Width x8 (downgraded)
> TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
> DevCap2: Completion Timeout: Range AB, TimeoutDis+ NROPrPrP- LTR+
> 10BitTagComp+ 10BitTagReq+ OBFF Via message, ExtFmt- EETLPPrefix-
> EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
> FRS-
> AtomicOpsCap: 32bit- 64bit- 128bitCAS-
> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR+ OBFF Disabled,
> AtomicOpsCtl: ReqEn-
> LnkCap2: Supported Link Speeds: 2.5-16GT/s, Crosslink- Retimer+ 2Retimers+ DRS-
> LnkCtl2: Target Link Speed: 16GT/s, EnterCompliance- SpeedDis-
> Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
> Compliance De-emphasis: -6dB
> LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete+ EqualizationPhase1+
> EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest-
> Retimer- 2Retimers- CrosslinkRes: unsupported
> Capabilities: [b4] Vendor Specific Information: Len=14 <?>
> Capabilities: [c8] MSI-X: Enable- Count=6 Masked-
> Vector table: BAR=0 offset=00b90000
> PBA: BAR=0 offset=00ba0000
> Capabilities: [100 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-
> Capabilities: [250 v1] Latency Tolerance Reporting
> Max snoop latency: 0ns
> Max no snoop latency: 0ns
> Capabilities: [258 v1] L1 PM Substates
> L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2- ASPM_L1.1+ L1_PM_Substates+
> PortCommonModeRestoreTime=255us PortTPowerOnTime=10us
> L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
> T_CommonMode=0us
> L1SubCtl2: T_PwrOn=10us
> Capabilities: [128 v1] Power Budgeting <?>
> Capabilities: [420 v2] 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- AdvNonFatalErr-
> CEMsk:	RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+
> AERCap:	First Error Pointer: 00, ECRCGenCap- ECRCGenEn- ECRCChkCap- ECRCChkEn-
> MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
> HeaderLog: 00000000 00000000 00000000 00000000
> Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
> Capabilities: [900 v1] Secondary PCI Express
> LnkCtl3: LnkEquIntrruptEn- PerformEqu-
> LaneErrStat: 0
> Capabilities: [bb0 v1] Physical Resizable BAR
> BAR 0: current size: 16MB, supported: 16MB
> BAR 1: current size: 64GB, supported: 64MB 128MB 256MB 512MB 1GB 2GB 4GB 8GB 16GB 32GB 64GB
> BAR 3: current size: 32MB, supported: 32MB
> Capabilities: [bcc v1] Single Root I/O Virtualization (SR-IOV)
> IOVCap:	Migration-, Interrupt Message Number: 000
> IOVCtl:	Enable- Migration- Interrupt- MSE- ARIHierarchy-
> IOVSta:	Migration-
> Initial VFs: 32, Total VFs: 32, Number of VFs: 0, Function Dependency Link: 00
> VF offset: 4, stride: 1, Device ID: 26b9
> Supported Page Size: 00000573, System Page Size: 00000001
> Region 1: Memory at 0000000000000000 (64-bit, prefetchable)
> Region 3: Memory at 0000000000000000 (64-bit, prefetchable)
> VF Migration: offset: 00000000, BIR: 0
> Capabilities: [c14 v1] Alternative Routing-ID Interpretation (ARI)
> ARICap:	MFVC- ACS-, Next Function: 0
> ARICtl:	MFVC- ACS-, Function Group: 0
> Capabilities: [c1c v1] Physical Layer 16.0 GT/s <?>
> Capabilities: [d00 v1] Lane Margining at the Receiver <?>
> Capabilities: [e00 v1] Data Link Feature <?>
> Kernel modules: nouveau, nvidia_drm, nvidia%
> 
> ```

> **proc/iomem contents**
>
> ```auto
> 01700000-0170ffff : 2c00000.memory-controller ch8
> 01710000-0171ffff : 2c00000.memory-controller ch9
> 01720000-0172ffff : 2c00000.memory-controller ch10
> 01730000-0173ffff : 2c00000.memory-controller ch11
> 01740000-0174ffff : 2c00000.memory-controller ch12
> 01750000-0175ffff : 2c00000.memory-controller ch13
> 01760000-0176ffff : 2c00000.memory-controller ch14
> 01770000-0177ffff : 2c00000.memory-controller ch15
> 02080000-021a0fff : 2080000.timer timer@2080000
> 02200000-0220ffff : 2200000.gpio security
> 02210000-0221ffff : 2200000.gpio gpio
> 0242c000-0242cffe : nvidia
> 02430000-024490ff : 2430000.pinmux pinmux@2430000
> 02600000-0280ffff : 2600000.dma-controller dma-controller@2600000
> 02900800-02900fff : 2900800.ahub ahub@2900800
> 02901000-029010ff : 2901000.i2s i2s@2901000
> 02901100-029011ff : 2901100.i2s i2s@2901100
> 02901200-029012ff : 2901200.i2s i2s@2901200
> 02901300-029013ff : 2901300.i2s i2s@2901300
> 02901400-029014ff : 2901400.i2s i2s@2901400
> 02901500-029015ff : 2901500.i2s i2s@2901500
> 02902000-029021ff : 2902000.sfc sfc@2902000
> 02902200-029023ff : 2902200.sfc sfc@2902200
> 02902400-029025ff : 2902400.sfc sfc@2902400
> 02902600-029027ff : 2902600.sfc sfc@2902600
> 02903000-029030ff : 2903000.amx amx@2903000
> 02903100-029031ff : 2903100.amx amx@2903100
> 02903200-029032ff : 2903200.amx amx@2903200
> 02903300-029033ff : 2903300.amx amx@2903300
> 02903800-029038ff : 2903800.adx adx@2903800
> 02903900-029039ff : 2903900.adx adx@2903900
> 02903a00-02903aff : 2903a00.adx adx@2903a00
> 02903b00-02903bff : 2903b00.adx adx@2903b00
> 02904000-029040ff : 2904000.dmic dmic@2904000
> 02904100-029041ff : 2904100.dmic dmic@2904100
> 02904200-029042ff : 2904200.dmic dmic@2904200
> 02904300-029043ff : 2904300.dmic dmic@2904300
> 02905000-029050ff : 2905000.dspk dspk@2905000
> 02905100-029051ff : 2905100.dspk dspk@2905100
> 02907000-029070ff : 2907000.afc afc@2907000
> 02907100-029071ff : 2907100.afc afc@2907100
> 02907200-029072ff : 2907200.afc afc@2907200
> 02907300-029073ff : 2907300.afc afc@2907300
> 02907400-029074ff : 2907400.afc afc@2907400
> 02907500-029075ff : 2907500.afc afc@2907500
> 02908000-029080ff : 2908000.processing-engine processing-engine@2908000
> 02908100-029081ff : 2908000.processing-engine equalizer@2908100
> 02908200-029083ff : 2908000.processing-engine dynamic-range-compressor@2908200
> 0290a000-0290a1ff : 290a000.mvc mvc@290a000
> 0290a200-0290a3ff : 290a200.mvc mvc@290a200
> 0290bb00-0290c2ff : 290bb00.amixer amixer@290bb00
> 0290e400-0290e7ff : 290e400.arad arad@290e400
> 0290f000-0290ffff : 290f000.admaif admaif@290f000
> 02910000-02911fff : 2910000.asrc asrc@2910000
> 02930000-0294ffff : 2930000.dma-controller dma-controller@2930000
> 02b80000-02b8ffff : 2c00000.memory-controller ch4
> 02b90000-02b9ffff : 2c00000.memory-controller ch5
> 02ba0000-02baffff : 2c00000.memory-controller ch6
> 02bb0000-02bbffff : 2c00000.memory-controller ch7
> 02c00000-02c0ffff : 2c00000.memory-controller sid
> 02c10000-02c1ffff : 2c00000.memory-controller broadcast
> 02c20000-02c2ffff : 2c00000.memory-controller ch0
> 02c30000-02c3ffff : 2c00000.memory-controller ch1
> 02c40000-02c4ffff : 2c00000.memory-controller ch2
> 02c50000-02c5ffff : 2c00000.memory-controller ch3
> 03100000-0310ffff : 3100000.serial serial@3100000
> 03110000-0311ffff : 3110000.serial serial@3110000
> 03130000-0313ffff : 3130000.serial serial@3130000
> 03140000-0314ffff : 3140000.serial serial@3140000
> 03160000-031600ff : 3160000.i2c i2c@3160000
> 03180000-031800ff : 3180000.i2c i2c@3180000
> 03190000-031900ff : 3190000.i2c i2c@3190000
> 031b0000-031b00ff : 31b0000.i2c i2c@31b0000
> 031c0000-031c00ff : 31c0000.i2c i2c@31c0000
> 031e0000-031e00ff : 31e0000.i2c i2c@31e0000
> 03210000-03210fff : 3210000.spi spi@3210000
> 03230000-03230fff : 3230000.spi spi@3230000
> 03280000-0328ffff : 3280000.pwm pwm@3280000
> 032a0000-032affff : 32a0000.pwm pwm@32a0000
> 032c0000-032cffff : 32c0000.pwm pwm@32c0000
> 032f0000-032fffff : 32f0000.pwm pwm@32f0000
> 03400000-0341ffff : 3400000.mmc mmc@3400000
> 03460000-0347ffff : 3460000.mmc mmc@3460000
> 03520000-0353ffff : 3520000.padctl padctl
> 03540000-0354ffff : 3520000.padctl ao
> 03550000-03557fff : 3550000.usb base
> 03558000-0355ffff : 3550000.usb fpci
> 03600000-0360ffff : 3610000.usb fpci
> 03610000-0364ffff : 3610000.usb hcd
> 03650000-0365ffff : 3610000.usb bar2
> 03810000-0381ffff : 3810000.fuse fuse@3810000
> 03990000-0399fffe : nvidia
> 039c0000-039c000f : 39c0000.tachometer tachometer@39c0000
> 03c00000-03c9ffff : 3c00000.hsp hsp@3c00000
> 03d00000-03d9ffff : 3d00000.hsp hsp@3d00000
> 03e00000-03e0ffff : 3e00000.phy ctl
> 03e10000-03e1ffff : 3e10000.phy ctl
> 03e20000-03e2ffff : 3e20000.phy ctl
> 03e30000-03e3ffff : 3e30000.phy ctl
> 03e40000-03e4ffff : 3e40000.phy ctl
> 03e50000-03e5ffff : 3e50000.phy ctl
> 03e60000-03e6ffff : 3e60000.phy ctl
> 03e70000-03e7ffff : 3e70000.phy ctl
> 03e90000-03e9ffff : 3e90000.phy ctl
> 03ea0000-03eaffff : 3ea0000.phy ctl
> 03eb0000-03ebffff : 3eb0000.phy ctl
> 03ec0000-03ecffff : 3ec0000.phy ctl
> 03ed0000-03edffff : 3ed0000.phy ctl
> 03ee0000-03eeffff : 3ee0000.phy ctl
> 03ef0000-03efffff : 3ef0000.phy ctl
> 03f00000-03f0ffff : 3f00000.phy ctl
> 03f20000-03f2ffff : 3f20000.phy ctl
> 03f30000-03f3ffff : 3f30000.phy ctl
> 03f40000-03f4ffff : 3f40000.phy ctl
> 03f50000-03f5ffff : 3f50000.phy ctl
> 03f60000-03f6ffff : 3f60000.phy ctl
> 03f70000-03f7ffff : 3f70000.phy ctl
> 03f80000-03f8ffff : 3f80000.phy ctl
> 03f90000-03f9ffff : 3f90000.phy ctl
> 06800000-0680ffff : 6810000.ethernet hypervisor
> 06810000-0681ffff : 6810000.ethernet mac
> 068a0000-068affff : 6810000.ethernet xpcs
> 068d0000-068dffff : 6810000.ethernet macsec-base
> 06900000-0690ffff : 6910000.ethernet hypervisor
> 06910000-0691ffff : 6910000.ethernet mac
> 069a0000-069affff : 6910000.ethernet xpcs
> 069d0000-069dffff : 6910000.ethernet macsec-base
> 07000000-07ffffff : 8000000.iommu iommu@8000000
> 08000000-08ffffff : 8000000.iommu iommu@8000000
> 0b950000-0b9dffff : b950000.tegra-hsp tegra-hsp@b950000
> 0b9f0000-0ba2ffff : bc00000.rtcpu rce-pm
> 0be00000-0be3ffff : be00000.rce-fabric rce-fabric@be00000
> 0c150000-0c1dffff : c150000.hsp hsp@c150000
> 0c1e0000-0c1effff : c1e0000.hardware-timestamp hardware-timestamp@c1e0000
> 0c240000-0c2400ff : c240000.i2c i2c@c240000
> 0c250000-0c2500ff : c250000.i2c i2c@c250000
> 0c260000-0c260fff : c260000.spi spi@c260000
> 0c2f0000-0c2f0fff : c2f0000.gpio security
> 0c2f1000-0c2f1fff : c2f0000.gpio gpio
> 0c300000-0c303fff : c300000.pinmux pinmux@c300000
> 0c310000-0c310143 : c310000.mttcan can-regs
> 0c311000-0c311031 : c310000.mttcan glue-regs
> 0c312000-0c312fff : c310000.mttcan msg-ram
> 0c320000-0c320143 : c320000.mttcan can-regs
> 0c321000-0c321031 : c320000.mttcan glue-regs
> 0c322000-0c322fff : c320000.mttcan msg-ram
> 0c360000-0c36ffff : c360000.pmc pmc
> 0c370000-0c37ffff : c360000.pmc wake
> 0c380000-0c38ffff : c360000.pmc aotag
> 0c390000-0c39ffff : c360000.pmc scratch
> 0c600000-0c63ffff : c600000.aon-fabric aon-fabric@c600000
> 0d230000-0d230fff : d230000.actmon actmon@d230000
> 0d600000-0d63ffff : d600000.bpmp-fabric bpmp-fabric@d600000
> 0de00000-0de3ffff : de00000.dce-fabric dce-fabric@de00000
> 0e000000-0e05fffe : e000000.ccplex ccplex@e000000
> 0e100000-0e10ffff : e100000.tegra_mce tegra_mce@e100000
> 0e110000-0e11ffff : e100000.tegra_mce tegra_mce@e100000
> 0e120000-0e12ffff : e100000.tegra_mce tegra_mce@e100000
> 0e130000-0e13ffff : e100000.tegra_mce tegra_mce@e100000
> 0e140000-0e14ffff : e100000.tegra_mce tegra_mce@e100000
> 0e150000-0e15ffff : e100000.tegra_mce tegra_mce@e100000
> 0e160000-0e16ffff : e100000.tegra_mce tegra_mce@e100000
> 0e170000-0e17ffff : e100000.tegra_mce tegra_mce@e100000
> 0e180000-0e18ffff : e100000.tegra_mce tegra_mce@e100000
> 0e190000-0e19ffff : e100000.tegra_mce tegra_mce@e100000
> 0e1a0000-0e1affff : e100000.tegra_mce tegra_mce@e100000
> 0e1b0000-0e1bffff : e100000.tegra_mce tegra_mce@e100000
> 10000000-10ffffff : 10000000.iommu iommu@10000000
> 11000000-11ffffff : 12000000.iommu iommu@12000000
> 12000000-12ffffff : 12000000.iommu iommu@12000000
> 13800000-138efffd : nvidia
> 13a00000-13dfffff : 13a00000.cbb-fabric cbb-fabric@13a00000
> 13e00000-13e0ffff : 13e00000.host1x common
> 13e10000-13e1ffff : 13e00000.host1x hypervisor
> 13e40000-13e4ffff : 13e00000.host1x vm
> 13ef0000-13f4ffff : 13e00000.host1x actmon
> 14100000-1411ffff : 14100000.pcie appl
> 14160000-1417ffff : 14160000.pcie appl
> 14180000-1419ffff : 14180000.pcie appl
> 141a0000-141bffff : 141a0000.pcie appl
> 141e0000-141fffff : 141e0000.pcie appl
> 14800000-1480ffff : 14800000.isp isp@14800000
> 15340000-1537ffff : 15340000.vic vic@15340000
> 15380000-153bffff : 15380000.nvjpg nvjpg@15380000
> 15480000-154bffff : 15480000.nvdec nvdec@15480000
> 154c0000-154fffff : 154c0000.nvenc nvenc@154c0000
> 15500000-1553ffff : 15500000.tsec tsec@15500000
> 15540000-1557ffff : 15540000.nvjpg nvjpg@15540000
> 155c0000-155cfffd : nvidia
> 15880000-158bffff : 15880000.nvdla0 nvdla0@15880000
> 158c0000-158fffff : 158c0000.nvdla1 nvdla1@158c0000
> 15a50000-15a8ffff : 15a50000.ofa ofa@15a50000
> 16000000-167fffff : 16000000.pva0 pva0@16000000
> 17000000-17ffffff : 17000000.gpu gpu@17000000
> 18000000-18ffffff : 17000000.gpu gpu@17000000
> 24700000-2477ffff : 16000000.pva0 pva0@16000000
> 30000000-3003ffff : 14100000.pcie config
> 30040000-3007ffff : 14100000.pcie atu_dma
> 30080000-300bffff : 14100000.pcie dbi
> 36000000-3603ffff : 14160000.pcie config
> 36040000-3607ffff : 14160000.pcie atu_dma
> 36080000-360bffff : 14160000.pcie dbi
> 38000000-3803ffff : 14180000.pcie config
> 38040000-3807ffff : 14180000.pcie atu_dma
> 38080000-380bffff : 14180000.pcie dbi
> 3a000000-3a03ffff : 141a0000.pcie config
> 3a040000-3a07ffff : 141a0000.pcie atu_dma
> 3a080000-3a0bffff : 141a0000.pcie dbi
> 3e000000-3e03ffff : 141e0000.pcie config
> 3e040000-3e07ffff : 141e0000.pcie atu_dma
> 3e080000-3e0bffff : 141e0000.pcie dbi
> 40070000-40070fff : 40000000.sram sram@70000
> 40071000-40071fff : 40000000.sram sram@71000
> 80000000-fffdffff : System RAM
> fbfe0000-fffdffff : reserved
> fffe0000-ffffffff : reserved
> 100000000-e15bbffff : System RAM
> d26db0000-d2928ffff : Kernel code
> d29290000-d29aaffff : reserved
> d29ab0000-d29fbffff : Kernel data
> dca200000-e10ffffff : reserved
> e11390000-e113dafff : reserved
> e11590000-e12983fff : reserved
> e15bc0000-e15d3ffff : reserved
> e15d30000-e15d30fff : reserved
> e15d40000-e2322ffff : System RAM
> e15d46000-e15d46fff : reserved
> e15d48000-e15d48fff : reserved
> e15d49000-e15d4afff : reserved
> e15d4b000-e15d4bfff : reserved
> e1bc90000-e1bc90fff : reserved
> e1bc91000-e1bc91fff : reserved
> e1d230000-e2322ffff : reserved
> e23230000-e2516ffff : reserved
> e25170000-e2c5fffff : System RAM
> e25a29000-e25ae8fff : reserved
> e25ae9000-e25ae9fff : reserved
> e25aea000-e25c45fff : reserved
> e25c48000-e25c48fff : reserved
> e25c49000-e25c4bfff : reserved
> e25c4c000-e25c4ffff : reserved
> e25c50000-e25c64fff : reserved
> e25c65000-e2c5fffff : reserved
> e2c600000-e2c7fffff : reserved
> e2c800000-e2cd6ffff : System RAM
> e2c800000-e2cd6ffff : reserved
> e2d700000-e2d7fffff : reserved
> e32000000-e33ffffff : reserved
> 2080000000-20a7ffffff : pcie@14100000
> 20a8000000-20afffffff : pcie@14100000
> 20a8000000-20a81fffff : PCI Bus 0001:01
> 20a8000000-20a80fffff : 0001:01:00.0
> 20a8000000-20a80fffff : igc
> 20a8100000-20a8103fff : 0001:01:00.0
> 20a8100000-20a8103fff : igc
> 2140000000-2427ffffff : pcie@14160000
> 2428000000-242fffffff : pcie@14160000
> 2428000000-24280fffff : PCI Bus 0004:01
> 2428000000-2428003fff : 0004:01:00.0
> 2428000000-2428003fff : iwlwifi
> 2440000000-2727ffffff : pcie@14180000
> 2728000000-272fffffff : pcie@14180000
> 2728000000-27281fffff : PCI Bus 0000:01
> 2728000000-27280fffff : 0000:01:00.0
> 2728000000-27280fffff : igc
> 2728100000-2728103fff : 0000:01:00.0
> 2728100000-2728103fff : igc
> 2800000000-2b27ffffff : pcie@141a0000
> 2b28000000-2b2fffffff : pcie@141a0000
> 2b28000000-2b28ffffff : PCI Bus 0005:01
> 2b28000000-2b28ffffff : 0005:01:00.0
> 3000000000-3227ffffff : pcie@141e0000
> 3228000000-322fffffff : pcie@141e0000
> 3228000000-32280fffff : PCI Bus 0007:01
> 3228000000-3228003fff : 0007:01:00.0
> 3228000000-3228003fff : nvme
> 
> ```

> **C5 PCIe Controller Device Tree Entry**
>
> ```auto
> pcie@141a0000 {
> power-domains = <0x03 0x05>;
> iommus = <0x06 0x14>;
> vpcie3v3-supply = <0x153>;
> #address-cells = <0x03>;
> dma-coherent;
> interconnect-names = "dma-mem\0write";
> phy-names = "p2u-0\0p2u-1\0p2u-2\0p2u-3\0p2u-4\0p2u-5\0p2u-6\0p2u-7";
> nvidia,bpmp = <0x03 0x05>;
> bus-range = <0x00 0xff>;
> clock-names = "core";
> interconnects = <0x05 0xe2 0x07 0x05 0xe3 0x07>;
> reg-names = "appl\0config\0atu_dma\0dbi\0ecam";
> nvidia,aspm-l0s-entrance-latency-us = <0x03>;
> nvidia,enable-srns;
> resets = <0x03 0x82 0x03 0x81>;
> interrupts = <0x00 0x35 0x04 0x00 0x36 0x04>;
> clocks = <0x03 0xe1>;
> interrupt-map = <0x00 0x00 0x00 0x00 0x01 0x00 0x35 0x04>;
> #size-cells = <0x02>;
> vpcie12v-supply = <0x11a>;
> device_type = "pci";
> interrupt-map-mask = <0x00 0x00 0x00 0x00>;
> num-lanes = <0x08>;
> compatible = "nvidia,tegra234-pcie";
> vddio-pex-ctl-supply = <0x108>;
> ranges = <0x43000000 0x28 0x00 0x28 0x00 0x03 0x28000000 0x2000000 0x00 0x40000000 0x2b 0x28000000 0x00 0x8000000 0x1000000 0x00 0x3a100000 0x00 0x3a100000 0x00 0x100000>;
> iommu-map-mask = <0x00>;
> #interrupt-cells = <0x01>;
> status = "okay";
> interrupt-names = "intr\0msi";
> phys = <0x10a 0x10b 0x10c 0x10d 0x10e 0x10f 0x110 0x111>;
> num-viewport = <0x08>;
> reg = <0x00 0x141a0000 0x00 0x20000 0x00 0x3a000000 0x00 0x40000 0x00 0x3a040000 0x00 0x40000 0x00 0x3a080000 0x00 0x40000 0x2b 0x30000000 0x00 0x10000000>;
> linux,pci-domain = <0x05>;
> iommu-map = <0x00 0x06 0x14 0x1000>;
> reset-names = "apb\0core";
> nvidia,aspm-pwr-on-t-us = <0x14>;
> nvidia,aspm-cmrt-us = <0x3c>;
> };
> 
> ```

Another experiment I tried was appending `pci=realloc` to the boot cmdline args in `/boot/extlinux/extlinux.conf`, but it didn’t have any effect on BAR allocation.

Would appreciate any pointers for PCIe enumeration.

---

<div class="post-metadata">

**Author:** ![dj45](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/dj45/32/529735_2.png) [@dj45](https://forums.developer.nvidia.com/u/dj45)\
**Post date:** [January 8, 2026, 8:51pm UTC](https://forums.developer.nvidia.com/t/increase-bar-size-for-pcie-c5-x8-root-port-controller/356933/4 "2026-01-08T20:51:10Z")

</div>

Another experiment I tried was to move just the prefetchable region alone to start at an address within this “off-chip aperture” region mentioned in the TRM. Not sure if this is a valid use-case for that region.

 ![Screenshot 2026-01-08 at 1.27.58 AM](https://global.discourse-cdn.com/nvidia/original/4X/1/6/0/1608cb93de1e2649f4ddd8ea4fdfca3129c7cee9.png)

Resizing this pre-fetchable region to 64GB, which is what the device requests by default, was not sufficient to successfully enumerate, but 128GB worked though. The ranges field in the device tree for 128GB was:

```auto
# Device tree for C5 controller 
ranges = <0x43000000 0x40 0x00000000 0x40 0x00000000 0x20 0x00000000
          0x02000000 0x00 0x40000000 0x2b 0x28000000 0x00 0x08000000
          0x01000000 0x00 0x3a100000 0x00 0x3a100000 0x00 0x00100000>;

```

This change managed to get the PCIe BAR allocation to succeed, but later attempts to interact with the device through a suitable dGPU driver + `nvidia-smi` caused the following crash.

> **Failed 64GB prefetchable region**
>
> ```auto
> cat enum_off_chip_64GB.txt
> [4.804824] tegra194-pcie 141a0000.pcie: Adding to iommu group 4
> [4.913642] tegra194-pcie 141a0000.pcie: host bridge /bus@0/pcie@141a0000 ranges:
> [4.913668] tegra194-pcie 141a0000.pcie: MEM 0x4000000000..0x4fffffffff -> 0x4000000000
> [4.913675] tegra194-pcie 141a0000.pcie: MEM 0x2b28000000..0x2b2fffffff -> 0x0040000000
> [4.913679] tegra194-pcie 141a0000.pcie: IO 0x003a100000..0x003a1fffff -> 0x003a100000
> [4.914103] tegra194-pcie 141a0000.pcie: iATU unroll: enabled
> [4.914108] tegra194-pcie 141a0000.pcie: Detected iATU regions: 8 outbound, 2 inbound
> [5.120128] tegra194-pcie 141a0000.pcie: Link up
> [5.130836] tegra194-pcie 141a0000.pcie: Link up
> [5.130875] tegra194-pcie 141a0000.pcie: PCI host bridge to bus 0005:00
> [5.130878] pci_bus 0005:00: root bus resource [io 0x300000-0x3fffff] (bus address [0x3a100000-0x3a1fffff])
> [5.130881] pci_bus 0005:00: root bus resource [mem 0x2b28000000-0x2b2fffffff] (bus address [0x40000000-0x47ffffff])
> [5.130883] pci_bus 0005:00: root bus resource [bus 00-ff]
> [5.130884] pci_bus 0005:00: root bus resource [mem 0x4000000000-0x4fffffffff pref]
> [5.130920] pci 0005:00:00.0: [10de:229a] type 01 class 0x060400
> [5.131054] pci 0005:00:00.0: PME# supported from D0 D3hot
> [5.134664] pci 0005:01:00.0: [10de:26b9] type 00 class 0x030200
> [5.134794] pci 0005:01:00.0: reg 0x10: [mem 0x00000000-0x00ffffff]
> [5.134890] pci 0005:01:00.0: reg 0x14: [mem 0x00000000-0xfffffffff 64bit pref]
> [5.134986] pci 0005:01:00.0: reg 0x1c: [mem 0x00000000-0x01ffffff 64bit pref]
> [5.135257] pci 0005:01:00.0: Enabling HDA controller
> [5.136023] pci 0005:01:00.0: PME# supported from D0 D3hot
> [5.136839] pci 0005:01:00.0: 126.024 Gb/s available PCIe bandwidth, limited by 16.0 GT/s PCIe x8 link at 0005:00:00.0 (capable of 252.048 Gb/s with 16.0 GT/s PCIe x16 link)
> [5.140184] pci 0005:00:00.0: BAR 9: no space for [mem size 0x1800000000 64bit pref]
> [5.140188] pci 0005:00:00.0: BAR 9: failed to assign [mem size 0x1800000000 64bit pref]
> [5.140189] pci 0005:00:00.0: BAR 8: assigned [mem 0x2b28000000-0x2b28ffffff]
> [5.140192] pci 0005:01:00.0: BAR 1: no space for [mem size 0x1000000000 64bit pref]
> [5.140194] pci 0005:01:00.0: BAR 1: failed to assign [mem size 0x1000000000 64bit pref]
> [5.140195] pci 0005:01:00.0: BAR 3: no space for [mem size 0x02000000 64bit pref]
> [5.140197] pci 0005:01:00.0: BAR 3: failed to assign [mem size 0x02000000 64bit pref]
> [5.140198] pci 0005:01:00.0: BAR 0: assigned [mem 0x2b28000000-0x2b28ffffff]
> [5.140222] pci 0005:00:00.0: PCI bridge to [bus 01-ff]
> [5.140227] pci 0005:00:00.0: bridge window [mem 0x2b28000000-0x2b28ffffff]
> [5.140297] pcieport 0005:00:00.0: Adding to iommu group 4
> [5.140366] pcieport 0005:00:00.0: PME: Signaling with IRQ 227
> [5.140633] pcieport 0005:00:00.0: AER: enabled with IRQ 227
> 
> ```

> **Working 128GB prefetchable region enumeration**
>
> ```auto
> cat enum_off_chip_128GB.txt
> [4.708051] tegra194-pcie 141a0000.pcie: Adding to iommu group 4
> [4.816721] tegra194-pcie 141a0000.pcie: host bridge /bus@0/pcie@141a0000 ranges:
> [4.816744] tegra194-pcie 141a0000.pcie: MEM 0x4000000000..0x5fffffffff -> 0x4000000000
> [4.816759] tegra194-pcie 141a0000.pcie: MEM 0x2b28000000..0x2b2fffffff -> 0x0040000000
> [4.816764] tegra194-pcie 141a0000.pcie: IO 0x003a100000..0x003a1fffff -> 0x003a100000
> [4.817157] tegra194-pcie 141a0000.pcie: iATU unroll: enabled
> [4.817161] tegra194-pcie 141a0000.pcie: Detected iATU regions: 8 outbound, 2 inbound
> [5.023789] tegra194-pcie 141a0000.pcie: Link up
> [5.034518] tegra194-pcie 141a0000.pcie: Link up
> [5.034558] tegra194-pcie 141a0000.pcie: PCI host bridge to bus 0005:00
> [5.034561] pci_bus 0005:00: root bus resource [io 0x300000-0x3fffff] (bus address [0x3a100000-0x3a1fffff])
> [5.034564] pci_bus 0005:00: root bus resource [mem 0x2b28000000-0x2b2fffffff] (bus address [0x40000000-0x47ffffff])
> [5.034566] pci_bus 0005:00: root bus resource [bus 00-ff]
> [5.034567] pci_bus 0005:00: root bus resource [mem 0x4000000000-0x5fffffffff pref]
> [5.034603] pci 0005:00:00.0: [10de:229a] type 01 class 0x060400
> [5.034736] pci 0005:00:00.0: PME# supported from D0 D3hot
> [5.038325] pci 0005:01:00.0: [10de:26b9] type 00 class 0x030200
> [5.038460] pci 0005:01:00.0: reg 0x10: [mem 0x00000000-0x00ffffff]
> [5.038556] pci 0005:01:00.0: reg 0x14: [mem 0x00000000-0xfffffffff 64bit pref]
> [5.038654] pci 0005:01:00.0: reg 0x1c: [mem 0x00000000-0x01ffffff 64bit pref]
> [5.038926] pci 0005:01:00.0: Enabling HDA controller
> [5.039695] pci 0005:01:00.0: PME# supported from D0 D3hot
> [5.040519] pci 0005:01:00.0: 126.024 Gb/s available PCIe bandwidth, limited by 16.0 GT/s PCIe x8 link at 0005:00:00.0 (capable of 252.048 Gb/s with 16.0 GT/s PCIe x16 link)
> [5.043860] pci 0005:00:00.0: BAR 9: assigned [mem 0x4000000000-0x57ffffffff 64bit pref]
> [5.043864] pci 0005:00:00.0: BAR 8: assigned [mem 0x2b28000000-0x2b28ffffff]
> [5.043866] pci 0005:01:00.0: BAR 1: assigned [mem 0x4000000000-0x4fffffffff 64bit pref]
> [5.043942] pci 0005:01:00.0: BAR 3: assigned [mem 0x5000000000-0x5001ffffff 64bit pref]
> [5.044019] pci 0005:01:00.0: BAR 0: assigned [mem 0x2b28000000-0x2b28ffffff]
> [5.044044] pci 0005:00:00.0: PCI bridge to [bus 01-ff]
> [5.044048] pci 0005:00:00.0: bridge window [mem 0x2b28000000-0x2b28ffffff]
> [5.044050] pci 0005:00:00.0: bridge window [mem 0x4000000000-0x57ffffffff 64bit pref]
> [5.044121] pcieport 0005:00:00.0: Adding to iommu group 4
> [5.044189] pcieport 0005:00:00.0: PME: Signaling with IRQ 227
> [5.044451] pcieport 0005:00:00.0: AER: enabled with IRQ 227
> 
> ```

> **proc/iomem with 128GB**
>
> ```auto
> cat iomem_off_chip_128GB.txt
> bedrock@bedrock-anvilrx2-3c6d668969d3:~$ sudo cat /proc/iomem
> 01700000-0170ffff : 2c00000.memory-controller ch8
> 01710000-0171ffff : 2c00000.memory-controller ch9
> 01720000-0172ffff : 2c00000.memory-controller ch10
> 01730000-0173ffff : 2c00000.memory-controller ch11
> 01740000-0174ffff : 2c00000.memory-controller ch12
> 01750000-0175ffff : 2c00000.memory-controller ch13
> 01760000-0176ffff : 2c00000.memory-controller ch14
> 01770000-0177ffff : 2c00000.memory-controller ch15
> 02080000-021a0fff : 2080000.timer timer@2080000
> 02200000-0220ffff : 2200000.gpio security
> 02210000-0221ffff : 2200000.gpio gpio
> 0242c000-0242cffe : nvidia
> 02430000-024490ff : 2430000.pinmux pinmux@2430000
> 02600000-0280ffff : 2600000.dma-controller dma-controller@2600000
> 02900800-02900fff : 2900800.ahub ahub@2900800
> 02901000-029010ff : 2901000.i2s i2s@2901000
> 02901100-029011ff : 2901100.i2s i2s@2901100
> 02901200-029012ff : 2901200.i2s i2s@2901200
> 02901300-029013ff : 2901300.i2s i2s@2901300
> 02901400-029014ff : 2901400.i2s i2s@2901400
> 02901500-029015ff : 2901500.i2s i2s@2901500
> 02902000-029021ff : 2902000.sfc sfc@2902000
> 02902200-029023ff : 2902200.sfc sfc@2902200
> 02902400-029025ff : 2902400.sfc sfc@2902400
> 02902600-029027ff : 2902600.sfc sfc@2902600
> 02903000-029030ff : 2903000.amx amx@2903000
> 02903100-029031ff : 2903100.amx amx@2903100
> 02903200-029032ff : 2903200.amx amx@2903200
> 02903300-029033ff : 2903300.amx amx@2903300
> 02903800-029038ff : 2903800.adx adx@2903800
> 02903900-029039ff : 2903900.adx adx@2903900
> 02903a00-02903aff : 2903a00.adx adx@2903a00
> 02903b00-02903bff : 2903b00.adx adx@2903b00
> 02904000-029040ff : 2904000.dmic dmic@2904000
> 02904100-029041ff : 2904100.dmic dmic@2904100
> 02904200-029042ff : 2904200.dmic dmic@2904200
> 02904300-029043ff : 2904300.dmic dmic@2904300
> 02905000-029050ff : 2905000.dspk dspk@2905000
> 02905100-029051ff : 2905100.dspk dspk@2905100
> 02907000-029070ff : 2907000.afc afc@2907000
> 02907100-029071ff : 2907100.afc afc@2907100
> 02907200-029072ff : 2907200.afc afc@2907200
> 02907300-029073ff : 2907300.afc afc@2907300
> 02907400-029074ff : 2907400.afc afc@2907400
> 02907500-029075ff : 2907500.afc afc@2907500
> 02908000-029080ff : 2908000.processing-engine processing-engine@2908000
> 02908100-029081ff : 2908000.processing-engine equalizer@2908100
> 02908200-029083ff : 2908000.processing-engine dynamic-range-compressor@2908200
> 0290a000-0290a1ff : 290a000.mvc mvc@290a000
> 0290a200-0290a3ff : 290a200.mvc mvc@290a200
> 0290bb00-0290c2ff : 290bb00.amixer amixer@290bb00
> 0290e400-0290e7ff : 290e400.arad arad@290e400
> 0290f000-0290ffff : 290f000.admaif admaif@290f000
> 02910000-02911fff : 2910000.asrc asrc@2910000
> 02930000-0294ffff : 2930000.dma-controller dma-controller@2930000
> 02b80000-02b8ffff : 2c00000.memory-controller ch4
> 02b90000-02b9ffff : 2c00000.memory-controller ch5
> 02ba0000-02baffff : 2c00000.memory-controller ch6
> 02bb0000-02bbffff : 2c00000.memory-controller ch7
> 02c00000-02c0ffff : 2c00000.memory-controller sid
> 02c10000-02c1ffff : 2c00000.memory-controller broadcast
> 02c20000-02c2ffff : 2c00000.memory-controller ch0
> 02c30000-02c3ffff : 2c00000.memory-controller ch1
> 02c40000-02c4ffff : 2c00000.memory-controller ch2
> 02c50000-02c5ffff : 2c00000.memory-controller ch3
> 03100000-0310ffff : 3100000.serial serial@3100000
> 03110000-0311ffff : 3110000.serial serial@3110000
> 03130000-0313ffff : 3130000.serial serial@3130000
> 03140000-0314ffff : 3140000.serial serial@3140000
> 03160000-031600ff : 3160000.i2c i2c@3160000
> 03180000-031800ff : 3180000.i2c i2c@3180000
> 03190000-031900ff : 3190000.i2c i2c@3190000
> 031b0000-031b00ff : 31b0000.i2c i2c@31b0000
> 031c0000-031c00ff : 31c0000.i2c i2c@31c0000
> 031e0000-031e00ff : 31e0000.i2c i2c@31e0000
> 03210000-03210fff : 3210000.spi spi@3210000
> 03230000-03230fff : 3230000.spi spi@3230000
> 03280000-0328ffff : 3280000.pwm pwm@3280000
> 032a0000-032affff : 32a0000.pwm pwm@32a0000
> 032c0000-032cffff : 32c0000.pwm pwm@32c0000
> 032f0000-032fffff : 32f0000.pwm pwm@32f0000
> 03400000-0341ffff : 3400000.mmc mmc@3400000
> 03460000-0347ffff : 3460000.mmc mmc@3460000
> 03520000-0353ffff : 3520000.padctl padctl
> 03540000-0354ffff : 3520000.padctl ao
> 03550000-03557fff : 3550000.usb base
> 03558000-0355ffff : 3550000.usb fpci
> 03600000-0360ffff : 3610000.usb fpci
> 03610000-0364ffff : 3610000.usb hcd
> 03650000-0365ffff : 3610000.usb bar2
> 03810000-0381ffff : 3810000.fuse fuse@3810000
> 03990000-0399fffe : nvidia
> 039c0000-039c000f : 39c0000.tachometer tachometer@39c0000
> 03c00000-03c9ffff : 3c00000.hsp hsp@3c00000
> 03d00000-03d9ffff : 3d00000.hsp hsp@3d00000
> 03e00000-03e0ffff : 3e00000.phy ctl
> 03e10000-03e1ffff : 3e10000.phy ctl
> 03e20000-03e2ffff : 3e20000.phy ctl
> 03e30000-03e3ffff : 3e30000.phy ctl
> 03e40000-03e4ffff : 3e40000.phy ctl
> 03e50000-03e5ffff : 3e50000.phy ctl
> 03e60000-03e6ffff : 3e60000.phy ctl
> 03e70000-03e7ffff : 3e70000.phy ctl
> 03e90000-03e9ffff : 3e90000.phy ctl
> 03ea0000-03eaffff : 3ea0000.phy ctl
> 03eb0000-03ebffff : 3eb0000.phy ctl
> 03ec0000-03ecffff : 3ec0000.phy ctl
> 03ed0000-03edffff : 3ed0000.phy ctl
> 03ee0000-03eeffff : 3ee0000.phy ctl
> 03ef0000-03efffff : 3ef0000.phy ctl
> 03f00000-03f0ffff : 3f00000.phy ctl
> 03f20000-03f2ffff : 3f20000.phy ctl
> 03f30000-03f3ffff : 3f30000.phy ctl
> 03f40000-03f4ffff : 3f40000.phy ctl
> 03f50000-03f5ffff : 3f50000.phy ctl
> 03f60000-03f6ffff : 3f60000.phy ctl
> 03f70000-03f7ffff : 3f70000.phy ctl
> 03f80000-03f8ffff : 3f80000.phy ctl
> 03f90000-03f9ffff : 3f90000.phy ctl
> 06800000-0680ffff : 6810000.ethernet hypervisor
> 06810000-0681ffff : 6810000.ethernet mac
> 068a0000-068affff : 6810000.ethernet xpcs
> 068d0000-068dffff : 6810000.ethernet macsec-base
> 06900000-0690ffff : 6910000.ethernet hypervisor
> 06910000-0691ffff : 6910000.ethernet mac
> 069a0000-069affff : 6910000.ethernet xpcs
> 069d0000-069dffff : 6910000.ethernet macsec-base
> 07000000-07ffffff : 8000000.iommu iommu@8000000
> 08000000-08ffffff : 8000000.iommu iommu@8000000
> 0b950000-0b9dffff : b950000.tegra-hsp tegra-hsp@b950000
> 0b9f0000-0ba2ffff : bc00000.rtcpu rce-pm
> 0be00000-0be3ffff : be00000.rce-fabric rce-fabric@be00000
> 0c150000-0c1dffff : c150000.hsp hsp@c150000
> 0c1e0000-0c1effff : c1e0000.hardware-timestamp hardware-timestamp@c1e0000
> 0c240000-0c2400ff : c240000.i2c i2c@c240000
> 0c250000-0c2500ff : c250000.i2c i2c@c250000
> 0c260000-0c260fff : c260000.spi spi@c260000
> 0c2f0000-0c2f0fff : c2f0000.gpio security
> 0c2f1000-0c2f1fff : c2f0000.gpio gpio
> 0c300000-0c303fff : c300000.pinmux pinmux@c300000
> 0c310000-0c310143 : c310000.mttcan can-regs
> 0c311000-0c311031 : c310000.mttcan glue-regs
> 0c312000-0c312fff : c310000.mttcan msg-ram
> 0c320000-0c320143 : c320000.mttcan can-regs
> 0c321000-0c321031 : c320000.mttcan glue-regs
> 0c322000-0c322fff : c320000.mttcan msg-ram
> 0c360000-0c36ffff : c360000.pmc pmc
> 0c370000-0c37ffff : c360000.pmc wake
> 0c380000-0c38ffff : c360000.pmc aotag
> 0c390000-0c39ffff : c360000.pmc scratch
> 0c600000-0c63ffff : c600000.aon-fabric aon-fabric@c600000
> 0d230000-0d230fff : d230000.actmon actmon@d230000
> 0d600000-0d63ffff : d600000.bpmp-fabric bpmp-fabric@d600000
> 0de00000-0de3ffff : de00000.dce-fabric dce-fabric@de00000
> 0e000000-0e05fffe : e000000.ccplex ccplex@e000000
> 0e100000-0e10ffff : e100000.tegra_mce tegra_mce@e100000
> 0e110000-0e11ffff : e100000.tegra_mce tegra_mce@e100000
> 0e120000-0e12ffff : e100000.tegra_mce tegra_mce@e100000
> 0e130000-0e13ffff : e100000.tegra_mce tegra_mce@e100000
> 0e140000-0e14ffff : e100000.tegra_mce tegra_mce@e100000
> 0e150000-0e15ffff : e100000.tegra_mce tegra_mce@e100000
> 0e160000-0e16ffff : e100000.tegra_mce tegra_mce@e100000
> 0e170000-0e17ffff : e100000.tegra_mce tegra_mce@e100000
> 0e180000-0e18ffff : e100000.tegra_mce tegra_mce@e100000
> 0e190000-0e19ffff : e100000.tegra_mce tegra_mce@e100000
> 0e1a0000-0e1affff : e100000.tegra_mce tegra_mce@e100000
> 0e1b0000-0e1bffff : e100000.tegra_mce tegra_mce@e100000
> 10000000-10ffffff : 10000000.iommu iommu@10000000
> 11000000-11ffffff : 12000000.iommu iommu@12000000
> 12000000-12ffffff : 12000000.iommu iommu@12000000
> 13800000-138efffd : nvidia
> 13a00000-13dfffff : 13a00000.cbb-fabric cbb-fabric@13a00000
> 13e00000-13e0ffff : 13e00000.host1x common
> 13e10000-13e1ffff : 13e00000.host1x hypervisor
> 13e40000-13e4ffff : 13e00000.host1x vm
> 13ef0000-13f4ffff : 13e00000.host1x actmon
> 14100000-1411ffff : 14100000.pcie appl
> 14160000-1417ffff : 14160000.pcie appl
> 14180000-1419ffff : 14180000.pcie appl
> 141a0000-141bffff : 141a0000.pcie appl
> 141e0000-141fffff : 141e0000.pcie appl
> 14800000-1480ffff : 14800000.isp isp@14800000
> 15340000-1537ffff : 15340000.vic vic@15340000
> 15380000-153bffff : 15380000.nvjpg nvjpg@15380000
> 15480000-154bffff : 15480000.nvdec nvdec@15480000
> 154c0000-154fffff : 154c0000.nvenc nvenc@154c0000
> 15500000-1553ffff : 15500000.tsec tsec@15500000
> 15540000-1557ffff : 15540000.nvjpg nvjpg@15540000
> 155c0000-155cfffd : nvidia
> 15880000-158bffff : 15880000.nvdla0 nvdla0@15880000
> 158c0000-158fffff : 158c0000.nvdla1 nvdla1@158c0000
> 15a50000-15a8ffff : 15a50000.ofa ofa@15a50000
> 16000000-167fffff : 16000000.pva0 pva0@16000000
> 17000000-17ffffff : 17000000.gpu gpu@17000000
> 18000000-18ffffff : 17000000.gpu gpu@17000000
> 24700000-2477ffff : 16000000.pva0 pva0@16000000
> 30000000-3003ffff : 14100000.pcie config
> 30040000-3007ffff : 14100000.pcie atu_dma
> 30080000-300bffff : 14100000.pcie dbi
> 36000000-3603ffff : 14160000.pcie config
> 36040000-3607ffff : 14160000.pcie atu_dma
> 36080000-360bffff : 14160000.pcie dbi
> 38000000-3803ffff : 14180000.pcie config
> 38040000-3807ffff : 14180000.pcie atu_dma
> 38080000-380bffff : 14180000.pcie dbi
> 3a000000-3a03ffff : 141a0000.pcie config
> 3a040000-3a07ffff : 141a0000.pcie atu_dma
> 3a080000-3a0bffff : 141a0000.pcie dbi
> 3e000000-3e03ffff : 141e0000.pcie config
> 3e040000-3e07ffff : 141e0000.pcie atu_dma
> 3e080000-3e0bffff : 141e0000.pcie dbi
> 40070000-40070fff : 40000000.sram sram@70000
> 40071000-40071fff : 40000000.sram sram@71000
> 80000000-fffdffff : System RAM
> fbfe0000-fffdffff : reserved
> fffe0000-ffffffff : reserved
> 100000000-e15bbffff : System RAM
> 300c10000-3030effff : Kernel code
> 3030f0000-30390ffff : reserved
> 303910000-303e1ffff : Kernel data
> dca200000-e10ffffff : reserved
> e11390000-e113dafff : reserved
> e11590000-e12983fff : reserved
> e15bc0000-e15d3ffff : reserved
> e15d30000-e15d30fff : reserved
> e15d40000-e2322ffff : System RAM
> e15d46000-e15d46fff : reserved
> e15d48000-e15d48fff : reserved
> e15d49000-e15d4afff : reserved
> e15d4b000-e15d4bfff : reserved
> e1bc90000-e1bc90fff : reserved
> e1bc91000-e1bc91fff : reserved
> e1d230000-e2322ffff : reserved
> e23230000-e2516ffff : reserved
> e25170000-e2c5fffff : System RAM
> e25a29000-e25ae8fff : reserved
> e25ae9000-e25ae9fff : reserved
> e25aea000-e25c45fff : reserved
> e25c48000-e25c4afff : reserved
> e25c4b000-e25c4efff : reserved
> e25c4f000-e25c63fff : reserved
> e25c64000-e2c5fffff : reserved
> e2c600000-e2c7fffff : reserved
> e2c800000-e2cd6ffff : System RAM
> e2c800000-e2cd6ffff : reserved
> e2d700000-e2d7fffff : reserved
> e32000000-e33ffffff : reserved
> 2080000000-20a7ffffff : pcie@14100000
> 20a8000000-20afffffff : pcie@14100000
> 20a8000000-20a81fffff : PCI Bus 0001:01
> 20a8000000-20a80fffff : 0001:01:00.0
> 20a8000000-20a80fffff : igc
> 20a8100000-20a8103fff : 0001:01:00.0
> 20a8100000-20a8103fff : igc
> 2140000000-2427ffffff : pcie@14160000
> 2428000000-242fffffff : pcie@14160000
> 2428000000-24280fffff : PCI Bus 0004:01
> 2428000000-2428003fff : 0004:01:00.0
> 2428000000-2428003fff : iwlwifi
> 2440000000-2727ffffff : pcie@14180000
> 2728000000-272fffffff : pcie@14180000
> 2728000000-27281fffff : PCI Bus 0000:01
> 2728000000-27280fffff : 0000:01:00.0
> 2728000000-27280fffff : igc
> 2728100000-2728103fff : 0000:01:00.0
> 2728100000-2728103fff : igc
> 2b28000000-2b2fffffff : pcie@141a0000
> 2b28000000-2b28ffffff : PCI Bus 0005:01
> 2b28000000-2b28ffffff : 0005:01:00.0
> 3000000000-3227ffffff : pcie@141e0000
> 3228000000-322fffffff : pcie@141e0000
> 3228000000-32280fffff : PCI Bus 0007:01
> 3228000000-3228003fff : 0007:01:00.0
> 3228000000-3228003fff : nvme
> 4000000000-5fffffffff : pcie@141a0000
> 4000000000-57ffffffff : PCI Bus 0005:01
> 4000000000-4fffffffff : 0005:01:00.0
> 5000000000-5001ffffff : 0005:01:00.0
> 
> ```

> **crash logs with 128GB**
>
> ```auto
> ��RmDeInit completed successfully
> ��[843.357563]
> ��ERROR: Ex:eption r **so*=2 synd** me=0x80000411
> ****
> ERROR: RAS Uncorrectable Error in SCC, base=0xe016000:
> ERROR: Status = 0xe400090d
> ERROR: SERR = Illegal address (software fault): 0xd
> ERROR: IERR = Address Range Error: 0x9
> ERROR: MISC0 = 0x6000000
> ERROR: MISC1 = 0xc1a75
> ERROR: MISC2 = 0x0
> ERROR: MISC3 = 0x0
> ERROR: ADDR = 0x8000005000ff6f40
> ERROR: **************************************
> ERROO: ddi_ddspattcheevettreeuuned -11
> 
> ERROR: **************************************
> ERROR: RAS Uncorrectable Error in ACI, base=0xe01c000:
> ERROR: Status = 0x60000d04
> ERROR: SERR = Assertion failure: 0x4
> ERROR: IERR = SNOC Write Error: 0xd
> ERROR: **************************************
> ERROR: sdei_dispatch_event returned -1
> EREOROR: Powxcin **off earen=** sy **rom** 0x **0** 41*
> ERROR: RAS Uncorrectable Error in SCC, base=0xe013000:
> ERROR: Status = 0xe400090d
> ERROR: SERR = Illegal address (software fault): 0xd
> ERROR: IERR = Address Range Error: 0x9
> ERROR: MISC0 = 0xa000000
> ERROR: MISC1 = 0x81a75
> ERROR: MISC2 = 0x0
> ERROR: MISC3 = 0x0
> ERROR: ADDR = 0x8000005000fef000
> ERROR: **************************************
> ERROR: sdei_dispatch_event returned -1
> ERROR: **************************************
> ERROR: RAS Uncorrectable Error in ACI, base=0xe01c000:
> ERROR: Status = 0x60000d04
> ERROR: SERR = Assertion failure: 0x4
> ERROR: IERR = SNOC Write Error: 0xd
> ERROR: **************************************
> ERROR: sdei_dispatch_event returned -1
> ERROn: Towering off co 5
> nhandled Exception in EL3.
> x30 = 0x00000000500009e0
> x0 = 0x0000000000000000
> x1 = 0x00000000500175f8
> x2 = 0x0000000000000000
> x3 = 0x0000000000000000
> x4 = 0x00000000500151d5
> x5 = 0x0000000000000043
> x6 = 0x0000000000000001
> x7 = 0x0000000000000000
> x8 = 0x0000000000000002
> x9 = 0x0000000000000001
> x10 = 0x55aaa055071756f5
> x11 = 0x55aa8255bbfabfb1
> x12 = 0xffffb736623e6000
> x13 = 0x000000000000fce5
> x14 = 0x00000001000213cd
> x15 = 0x0000000000000000
> x16 = 0xffff800008000000
> x17 = 0xffff48d743dad000
> x18 = 0xffff0000b3c5be00
> x19 = 0x00000000ffffffff
> x20 = 0x0000000000000004
> x21 = 0x0000000000000010
> x22 = 0x0000000050017510
> x23 = 0x0000000000000000
> x24 = 0x0000000050017510
> x25 = 0x0000000050025000
> x26 = 0x0000000050017c4c
> x27 = 0x0000000050025280
> x28 = 0x000000000e005018
> x29 = 0x0000000050017bc0
> scr_el3 = 0x000000000003073d
> sctlr_el3 = 0x00000000b0cd183f
> cptr_el3 = 0x0000000000000000
> tcr_el3 = 0x0000000080823518
> daif = 0x00000000000003c0
> mair_el3 = 0x00000000004404ff
> spsr_el3 = 0x00000000804002cd
> elr_el3 = 0x0000000000000000
> ttbr0_el3 = 0x0000000050025581
> esr_el3 = 0x0000000086000007
> far_el3 = 0x0000000000000000
> spsr_el1 = 0x0000000000000000
> elr_el1 = 0x0000000000000000
> spsr_abt = 0x0000000000000000
> spsr_und = 0x0000000000000000
> spsr_irq = 0x0000000000000000
> spsr_fiq = 0x0000000000000000
> sctlr_el1 = 0x0000000030500800
> actlr_el1 = 0x0000000000000000
> cpacr_el1 = 0x0000000000000000
> csselr_el1 = 0x0000000000000000
> sp_el1 = 0x0000000000000000
> esr_el1 = 0x0000000000000000
> ttbr0_el1 = 0x0000000000000000
> ttbr1_el1 = 0x0000000000000000
> mair_el1 = 0x44e048e000098aa4
> amair_el1 = 0x0000000000000000
> tcr_el1 = 0x0000000000000000
> tpidr_el1 = 0x0000000000000000
> tpidr_el0 = 0x0000ffffa0677ca0
> tpidrro_el0 = 0x0000000000000000
> par_el1 = 0x0000000000000800
> mpidr_el1 = 0x0000000081000000
> afsr0_el1 = 0x0000000000000000
> afsr1_el1 = 0x0000000000000000
> contextidr_el1 = 0x0000000000000000
> vbar_el1 = 0x0000000000000000
> cntp_ctl_el0 = 0x0000000000000000
> cntp_cval_el0 = 0x00000000248862a0
> cntv_ctl_el0 = 0x0000000000000000
> cntv_cval_el0 = 0x0000000000000000
> cntkctl_el1 = 0x0000000000000002
> sp_el0 = 0x0000000050017bb0
> isr_el1 = 0x0000000000000040
> cpuectlr_el1 = 0xa000000b40543000
> gicd_ispendr regs (Offsets 0x200 - 0x278)
> Offset: value
> 0000000000000200: 0x0000000000000000
> 0000000000000204: 0x0000000000000000
> 0000000000000208: 0x0000000000000100
> 000000000000020c: 0x0000000000000200
> 0000000000000210: 0x0000000000000000
> 0000000000000214: 0x0000000000000000
> 0000000000000218: 0x0000000000000048
> 000000000000021c: 0x0000000000000000
> 0000000000000220: 0x0000000000000000
> 0000000000000224: 0x0000000000000000
> 0000000000000228: 0x0000000000000000
> 000000000000022c: 0x0000000000000000
> 0000000000000230: 0x0000000000000000
> 0000000000000234: 0x0000000000000000
> 0000000000000238: 0x0000000000000000
> 000000000000023c: 0x0000000000000000
> 0000000000000240: 0x0000000000000000
> 0000000000000244: 0x0000000000000000
> 0000000000000248: 0x0000000000000000
> 000000000000024c: 0x0000000000000000
> 0000000000000250: 0x0000000000000000
> 0000000000000254: 0x0000000000000000
> 0000000000000258: 0x0000000000000000
> 000000000000025c: 0x0000000000000000
> 0000000000000260: 0x0000000000000000
> 0000000000000264: 0x0000000000000000
> 0000000000000268: 0x0000000000000000
> 000000000000026c: 0x0000000000000000
> 0000000000000270: 0x0000000000000000
> 0000000000000274: 0x0000000000000000
> 0000000000000278: 0x0000000000000000
> ��[865.579237] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> [865.579246] rcu: 0-...0: (0 ticks this GP) idle=dad/1/0x4000000000000002 softirq=44998/44998 fqs=1300
> [885.719122] nvme nvme0: I/O 171 QID 6 timeout, completion polled
> [906.198884] mmc0: cqhci: timeout for tag 0
> [906.198894] mmc0: cqhci: ============ CQHCI REGISTER DUMP ===========
> [906.198898] mmc0: cqhci: Caps: 0x000020c8 | Version: 0x00000510
> [906.198903] mmc0: cqhci: Config: 0x00001101 | Control: 0x00000000
> [906.198908] mmc0: cqhci: Int stat: 0x00000002 | Int enab: 0x00000006
> [906.198912] mmc0: cqhci: Int sig: 0x00000006 | Int Coal: 0x00000000
> [906.198917] mmc0: cqhci: TDL base: 0xffffb000 | TDL up32: 0x0000007f
> [906.198921] mmc0: cqhci: Doorbell: 0x00000000 | TCN: 0x00001001
> [906.198926] mmc0: cqhci: Dev queue: 0x00000000 | Dev Pend: 0x00000000
> [906.198930] mmc0: cqhci: Task clr: 0x00000000 | SSC1: 0x00001000
> [906.198933] mmc0: cqhci: SSC2: 0x00000001 | DCMD rsp: 0x00000800
> [906.198936] mmc0: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x0c2e0c0d
> [906.198940] mmc0: cqhci: Resp idx: 0x0000000d | Resp arg: 0x00000000
> [906.198942] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> [906.198948] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000505
> [906.198951] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
> [906.198955] mmc0: sdhci: Argument: 0x00018000 | Trn mode: 0x00000033
> [906.198958] mmc0: sdhci: Present: 0x11fb00f0 | Host ctl: 0x00000038
> [906.198962] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> [906.198965] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000000f
> [906.198968] mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00004000
> [906.198971] mmc0: sdhci: Int enab: 0x02ff4000 | Sig enab: 0x02fc4000
> [906.198974] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> [906.198977] mmc0: sdhci: Caps: 0x3f6cd08c | Caps_1: 0x18002f73
> [906.198980] mmc0: sdhci: Cmd: 0x00000d1e | Max curr: 0x00000000
> [906.198983] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x0480608d
> [906.198986] mmc0: sdhci: Resp[2]: 0x3ad70000 | Resp[3]: 0x00000400
> [906.198989] mmc0: sdhci: Host ctl2: 0x0000300d
> [906.198992] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000007ffffe6010
> [906.198994] mmc0: sdhci: ============================================
> [906.199009] mmc0: running CQE recovery
> [916.438777] mmc0: Timeout waiting for hardware interrupt.
> [916.438784] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> [916.438789] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000505
> [916.438793] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
> [916.438797] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000033
> [916.438800] mmc0: sdhci: Present: 0x01fb00f1 | Host ctl: 0x00000039
> [916.438803] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> [916.438806] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000000f
> [916.438809] mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00018003
> [916.438812] mmc0: sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00fc0003
> [916.438815] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> [916.438818] mmc0: sdhci: Caps: 0x3f6cd08c | Caps_1: 0x18002f73
> [916.438821] mmc0: sdhci: Cmd: 0x00000c13 | Max curr: 0x00000000
> [916.438825] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x0480608d
> [916.438827] mmc0: sdhci: Resp[2]: 0x3ad70000 | Resp[3]: 0x00000400
> [916.438830] mmc0: sdhci: Host ctl2: 0x0000300d
> [916.438833] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000007ffffe6010
> [916.438836] mmc0: sdhci: ============================================
> [916.438884] nvme nvme0: I/O 934 QID 8 timeout, completion polled
> [926.678677] mmc0: Timeout waiting for hardware interrupt.
> [926.678685] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> [926.678690] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000505
> [926.678694] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
> [926.678698] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000033
> [926.678701] mmc0: sdhci: Present: 0x01fb00f1 | Host ctl: 0x00000039
> [926.678704] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> [926.678707] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000000f
> [926.678710] mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00018003
> [926.678713] mmc0: sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00fc0003
> [926.678716] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> [926.678719] mmc0: sdhci: Caps: 0x3f6cd08c | Caps_1: 0x18002f73
> [926.678722] mmc0: sdhci: Cmd: 0x00000c13 | Max curr: 0x00000000
> [926.678725] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x0480608d
> [926.678729] mmc0: sdhci: Resp[2]: 0x3ad70000 | Resp[3]: 0x00000400
> [926.678731] mmc0: sdhci: Host ctl2: 0x0000300d
> [926.678735] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000007ffffe6010
> [926.678737] mmc0: sdhci: ============================================
> [928.598655] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
> [928.598660] rcu: 0-...0: (0 ticks this GP) idle=dad/1/0x4000000000000002 softirq=44998/44998 fqs=4451
> [936.918583] mmc0: Timeout waiting for hardware interrupt.
> [936.918591] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> [936.918596] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000505
> [936.918600] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
> [936.918604] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000033
> [936.918607] mmc0: sdhci: Present: 0x01fb00f1 | Host ctl: 0x00000039
> [936.918610] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> [936.918613] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000000f
> [936.918616] mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00018003
> [936.918619] mmc0: sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00fc0003
> [936.918622] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> [936.918625] mmc0: sdhci: Caps: 0x3f6cd08c | Caps_1: 0x18002f73
> [936.918628] mmc0: sdhci: Cmd: 0x00000c13 | Max curr: 0x00000000
> [936.918631] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x0480608d
> [936.918634] mmc0: sdhci: Resp[2]: 0x3ad70000 | Resp[3]: 0x00000400
> [936.918636] mmc0: sdhci: Host ctl2: 0x0000300d
> [936.918640] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000007ffffe6010
> [936.918641] mmc0: sdhci: ============================================
> [947.158494] mmc0: Timeout waiting for hardware interrupt.
> [947.158503] mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> [947.158507] mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000505
> [947.158513] mmc0: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000
> [947.158517] mmc0: sdhci: Argument: 0x00000000 | Trn mode: 0x00000033
> [947.158522] mmc0: sdhci: Present: 0x01fb00f1 | Host ctl: 0x00000039
> [947.158526] mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> [947.158529] mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000000f
> [947.158532] mmc0: sdhci: Timeout: 0x0000000e | Int stat: 0x00018003
> [947.158535] mmc0: sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00fc0003
> [947.158538] mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> [947.158541] mmc0: sdhci: Caps: 0x3f6cd08c | Caps_1: 0x18002f73
> [947.158544] mmc0: sdhci: Cmd: 0x00000c13 | Max curr: 0x00000000
> [947.158547] mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x0480608d
> [947.158551] mmc0: sdhci: Resp[2]: 0x3ad70000 | Resp[3]: 0x00000400
> [947.158553] mmc0: sdhci: Host ctl2: 0x0000300d
> [947.158557] mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x0000007ffffe6010
> [947.158559] mmc0: sdhci: ============================================
> [947.158632] nvme nvme0: I/O 934 QID 8 timeout, completion polled
> 
> ```