Re: [Bisected Regression] OLPC XO-1.5: Internal drive and SD card (mmcblk*) gone since commit ea718c699055

[Saravana Kannan]

On Sun, Sep 5, 2021 at 1:15 AM Andre Muller <andre.muller@xxxxxx> wrote:
>
> With linux-5.13 and linux-5.14, the internal drive and SD card reader are gone from the XO-1.5. I bisected the issue to come up with ea718c699055:
>
> # first bad commit: [ea718c699055c8566eb64432388a04974c43b2ea] Revert "Revert "driver core: Set fw_devlink=on by default""
>
> The /dev/mmcblk* nodes are not generated since this patch.
>
> Please find the output of lspsi -vv and lshw below.
>
> I will be happy to provide more info and/or test patches.

Hi Andre,

Can you point me to the dts file in upstream that corresponds to this system?

Also, if you can give the output of:
cat /sys/kernel/debug/devices_deferred

Thanks,
Saravana

>
> Thank you,
> Andre Müller
>
> ===
>
> # lspci -vv
>
> 00:00.0 Host bridge: VIA Technologies, Inc. VX855/VX875 Host Bridge: Host Control (rev 03)
>          Subsystem: QUANTA Computer Inc VX855/VX875 Host Bridge: Host Control
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 32, Cache Line Size: 32 bytes
>
> 00:00.1 Host bridge: VIA Technologies, Inc. VX855/VX875 Error Reporting
>          Subsystem: QUANTA Computer Inc VX855/VX875 Error Reporting
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0, Cache Line Size: 32 bytes
>
> 00:00.2 Host bridge: VIA Technologies, Inc. VX855/VX875 Host Bus Control
>          Subsystem: QUANTA Computer Inc VX855/VX875 Host Bus Control
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0, Cache Line Size: 32 bytes
>
> 00:00.3 Host bridge: VIA Technologies, Inc. VX855/VX875 DRAM Bus Control
>          Subsystem: QUANTA Computer Inc VX855/VX875 DRAM Bus Control
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0
>
> 00:00.4 Host bridge: VIA Technologies, Inc. VX855/VX875 Power Management Control
>          Subsystem: QUANTA Computer Inc VX855/VX875 Power Management Control
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0, Cache Line Size: 32 bytes
>
> 00:00.5 PIC: VIA Technologies, Inc. VX855/VX875 APIC and Central Traffic Control (prog-if 20 [IO(X)-APIC])
>          Subsystem: QUANTA Computer Inc VX855/VX875 APIC and Central Traffic Control
>          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: 32 bytes
>
> 00:00.6 Host bridge: VIA Technologies, Inc. VX855/VX875 Scratch Registers
>          Subsystem: QUANTA Computer Inc VX855/VX875 Scratch Registers
>          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: 32 bytes
>
> 00:00.7 Host bridge: VIA Technologies, Inc. VX855/VX875 North-South Module Interface Control
>          Subsystem: QUANTA Computer Inc VX855/VX875 North-South Module Interface Control
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0, Cache Line Size: 32 bytes
>
> 00:01.0 VGA compatible controller: VIA Technologies, Inc. VX855/VX875 Chrome 9 HCM Integrated Graphics (prog-if 00 [VGA controller])
>          Subsystem: QUANTA Computer Inc VX855/VX875 Chrome 9 HCM Integrated Graphics
>          Device tree node: /sys/firmware/devicetree/base/pci/display@1
>          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: 32
>          Interrupt: pin A routed to IRQ 16
>          Region 0: Memory at d0000000 (32-bit, prefetchable) [size=64M]
>          Region 1: Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
>          Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
>          Capabilities: [60] Power Management version 2
>                  Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
>                  Address: 00000000  Data: 0000
>          Kernel driver in use: viafb
>
> 00:0c.0 SD Host controller: VIA Technologies, Inc. SDIO Host Controller (rev 10) (prog-if 01)
>          Subsystem: QUANTA Computer Inc SDIO Host Controller
>          Device tree node: /sys/firmware/devicetree/base/pci/sd@c
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 0
>          Interrupt: pin A routed to IRQ 22
>          Region 0: Memory at 80000000 (32-bit, non-prefetchable) [size=256]
>          Region 1: Memory at 80001000 (32-bit, non-prefetchable) [size=256]
>          Region 2: Memory at 80002000 (32-bit, non-prefetchable) [size=256]
>          Capabilities: [80] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Kernel driver in use: sdhci-pci
>
> 00:10.0 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev a0) (prog-if 00 [UHCI])
>          Subsystem: QUANTA Computer Inc VT82xx/62xx UHCI USB 1.1 Controller
>          Device tree node: /sys/firmware/devicetree/base/pci/usb@10
>          Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 32, Cache Line Size: 32 bytes
>          Interrupt: pin A routed to IRQ 20
>          Region 4: I/O ports at 8000 [size=32]
>          Capabilities: [80] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Kernel driver in use: uhci_hcd
>
> 00:10.1 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev a0) (prog-if 00 [UHCI])
>          Subsystem: QUANTA Computer Inc VT82xx/62xx UHCI USB 1.1 Controller
>          Device tree node: /sys/firmware/devicetree/base/pci/usb@10,1
>          Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 32, Cache Line Size: 32 bytes
>          Interrupt: pin B routed to IRQ 22
>          Region 4: I/O ports at 8020 [size=32]
>          Capabilities: [80] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Kernel driver in use: uhci_hcd
>
> 00:10.2 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev a0) (prog-if 00 [UHCI])
>          Subsystem: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller
>          Device tree node: /sys/firmware/devicetree/base/pci/usb@10,2
>          Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 32, Cache Line Size: 32 bytes
>          Interrupt: pin C routed to IRQ 21
>          Region 4: I/O ports at 8040 [size=32]
>          Capabilities: [80] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Kernel driver in use: uhci_hcd
>
> 00:10.4 USB controller: VIA Technologies, Inc. USB 2.0 (rev 90) (prog-if 20 [EHCI])
>          Subsystem: QUANTA Computer Inc USB 2.0
>          Device tree node: /sys/firmware/devicetree/base/pci/usb@10,4
>          Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Latency: 32, Cache Line Size: 64 bytes
>          Interrupt: pin D routed to IRQ 23
>          Region 0: Memory at 80003000 (32-bit, non-prefetchable) [size=256]
>          Capabilities: [80] Power Management version 2
>                  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Capabilities: [88] Debug port: BAR=1 offset=00a0
>          Kernel driver in use: ehci-pci
>
> 00:11.0 ISA bridge: VIA Technologies, Inc. VX855/VX875 Bus Control and Power Management
>          Subsystem: QUANTA Computer Inc VX855/VX875 Bus Control and Power Management
>          Device tree node: /sys/firmware/devicetree/base/pci/isa@11
>          Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
>          Capabilities: [c0] Power Management version 2
>                  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>
> 00:11.7 Host bridge: VIA Technologies, Inc. VX8xx South-North Module Interface Control
>          Subsystem: VIA Technologies, Inc. VX8xx South-North Module Interface Control
>          Device tree node: /sys/firmware/devicetree/base/pci/host@11,7
>          Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
>          Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
>
> 00:13.0 PCI bridge: VIA Technologies, Inc. VX855/VX875/VX900 PCI to PCI Bridge (prog-if 00 [Normal decode])
>          Device tree node: /sys/firmware/devicetree/base/pci/pci@13
>          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
>          Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
>          I/O behind bridge: [disabled]
>          Memory behind bridge: [disabled]
>          Prefetchable memory behind bridge: [disabled]
>          Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- <SERR- <PERR-
>          BridgeCtl: Parity- SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB2B-
>                  PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
>          Capabilities: [70] Subsystem: VIA Technologies, Inc. VX855/VX875/VX900 PCI to PCI Bridge
>
> 00:14.0 Audio device: VIA Technologies, Inc. VT8237A/VT8251 HDA Controller (rev 20)
>          Subsystem: QUANTA Computer Inc VT8237A/VT8251 HDA Controller
>          Device tree node: /sys/firmware/devicetree/base/pci/audio@14
>          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: 32 bytes
>          Interrupt: pin A routed to IRQ 17
>          Region 0: Memory at 80004000 (64-bit, non-prefetchable) [size=16K]
>          Capabilities: [50] Power Management version 2
>                  Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
>                  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
>          Capabilities: [60] MSI: Enable- Count=1/1 Maskable- 64bit+
>                  Address: 0000000000000000  Data: 0000
>          Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
>                  DevCap: MaxPayload 128 bytes, PhantFunc 0
>                          ExtTag- RBE- FLReset-
>                  DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
>                          RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
>                          MaxPayload 128 bytes, MaxReadReq 128 bytes
>                  DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr+ TransPend-
>          Kernel driver in use: snd_hda_intel
>
> ===
>
> # lshw
>
> xo
>      description: Laptop
>      product: DA
>      vendor: OLPC
>      version: 1.5
>      serial: SHC1470003A
>      width: 32 bits
>      capabilities: smbios-2.1 dmi-2.1
>      configuration: chassis=laptop uuid=5a6dddd6-4fbe-32d5-50e9-786f7411eb8e
>    *-core
>         description: Motherboard
>         product: XO
>         vendor: QUANTA
>         physical id: 0
>         version: 1.5
>         serial: SHC1470003A
>       *-firmware:0
>            description: BIOS
>            vendor: IE8y2D ScD%g4r2bAIFA.
>            physical id: 0
>            version: OLPC Ver 1.00.15
>            date: 06/13/2014
>            size: 64KiB
>            capacity: 1MiB
>            capabilities: pci upgrade shadowing cdboot bootselect edd acpi
>       *-cpu:0
>            description: CPU
>            product: VIA C7-M Processor 1000MHz
>            vendor: CentaurHauls
>            physical id: 400
>            bus info: cpu@0
>            version: 6.13.0
>            size: 997MHz
>            capacity: 997MHz
>            width: 32 bits
>            clock: 33MHz
>            capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge cmov pat clflush acpi mmx fxsr sse sse2 tm nx cpuid pni est tm2 xtpr rng rng_en ace ace_en ace2 ace2_en phe phe_en pmm pmm_en cpufreq
>          *-cache:0
>               description: L1 cache
>               physical id: 701
>               size: 128KiB
>               capacity: 128KiB
>               capabilities: internal write-back unified
>               configuration: level=1
>          *-cache:1
>               description: L2 cache
>               physical id: 703
>               size: 128KiB
>               capacity: 128KiB
>               capabilities: internal write-back unified
>               configuration: level=2
>       *-memory
>            description: System Memory
>            physical id: 1001
>            slot: System board or motherboard
>            size: 1GiB
>            capacity: 1GiB
>          *-bank
>               description: Row of chips DDR2 Synchronous
>               physical id: 0
>               slot: Soldered
>               size: 1GiB
>               width: 64 bits
>       *-firmware:1
>            product: CL1   Q3C17  Q3C
>            physical id: 1
>            logical name: /proc/device-tree
>       *-cpu:1 DISABLED
>            description: CPU
>            product: cpu
>            physical id: 2
>            bus info: cpu@0
>            size: 1GHz
>       *-pci:0
>            description: Host bridge
>            product: VX855/VX875 Host Bridge: Host Control
>            vendor: VIA Technologies, Inc.
>            physical id: 100
>            bus info: pci@0000:00:00.0
>            version: 03
>            width: 32 bits
>            clock: 33MHz
>            configuration: latency=32
>          *-generic:0 UNCLAIMED
>               description: PIC
>               product: VX855/VX875 APIC and Central Traffic Control
>               vendor: VIA Technologies, Inc.
>               physical id: 0.5
>               bus info: pci@0000:00:00.5
>               version: 00
>               width: 32 bits
>               clock: 33MHz
>               capabilities: io_x_-apic bus_master
>               configuration: latency=0
>          *-display
>               description: VGA compatible controller
>               product: VX855/VX875 Chrome 9 HCM Integrated Graphics
>               vendor: VIA Technologies, Inc.
>               physical id: 1
>               bus info: pci@0000:00:01.0
>               logical name: /dev/fb0
>               version: 00
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm msi vga_controller bus_master cap_list rom fb
>               configuration: depth=32 driver=viafb latency=32 resolution=1200,900
>               resources: irq:16 memory:d0000000-d3ffffff memory:f0000000-f0ffffff memory:c0000-dffff
>          *-generic:1
>               description: MMC Host
>               product: SDIO Host Controller
>               vendor: VIA Technologies, Inc.
>               physical id: c
>               bus info: pci@0000:00:0c.0
>               logical name: mmc0
>               logical name: mmc1
>               logical name: mmc2
>               version: 10
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm bus_master cap_list
>               configuration: driver=sdhci-pci latency=0
>               resources: irq:22 memory:80000000-800000ff memory:80001000-800010ff memory:80002000-800020ff
>             *-device:0
>                  description: SD Card
>                  product: SD08G
>                  vendor: SanDisk
>                  physical id: aaaa
>                  logical name: /dev/mmcblk0
>                  version: 8.0
>                  date: 09/2010
>                  serial: 167437691
>                  size: 7580MiB (7948MB)
>                  capabilities: sd partitioned partitioned:dos
>                  configuration: logicalsectorsize=512 sectorsize=512 signature=304f4eb5
>                *-volume:0
>                     description: Linux filesystem partition
>                     vendor: Linux
>                     physical id: 1
>                     logical name: /dev/mmcblk0p1
>                     logical name: /boot
>                     version: 1.0
>                     serial: 0e879075-94ae-487d-b65f-86c6f4814cc7
>                     size: 7MiB
>                     capacity: 7MiB
>                     capabilities: primary extended_attributes ext2 initialized
>                     configuration: filesystem=ext2 lastmountpoint=/mnt/sdb1 modified=2021-09-04 23:01:46 mount.fstype=ext2 mount.options=rw,noatime mounted=2021-09-04 23:01:46 state=mounted
>                *-volume:1
>                     description: Linux filesystem partition
>                     physical id: 2
>                     logical name: /dev/mmcblk0p2
>                     capacity: 7572MiB
>                     capabilities: primary
>             *-device:1
>                  description: SDIO Device
>                  physical id: 1
>                  bus info: mmc@1:0001:1
>                  logical name: mmc1:0001:1
>                  serial: 0
>                  capabilities: sdio
>             *-device:2
>                  description: SD Card
>                  product: SU04G
>                  vendor: SanDisk
>                  physical id: e624
>                  logical name: /dev/mmcblk2
>                  version: 8.0
>                  date: 09/2011
>                  serial: 290732065
>                  size: 3781MiB (3965MB)
>                  capabilities: sd partitioned partitioned:dos
>                  configuration: logicalsectorsize=512 sectorsize=512
>                *-volume:0
>                     description: Linux filesystem partition
>                     vendor: Linux
>                     physical id: 1
>                     logical name: /dev/mmcblk2p1
>                     version: 1.0
>                     serial: ad2652ce-fee6-48ba-be72-86fb96ae288b
>                     size: 64MiB
>                     capacity: 64MiB
>                     capabilities: primary bootable extended_attributes ext2 initialized
>                     configuration: filesystem=ext2 label=Boot lastmountpoint=/var/lib/random-seed modified=2021-09-03 01:06:44 mounted=2021-09-03 01:06:32 state=unknown
>                *-volume:1
>                     description: EXT4 volume
>                     vendor: Linux
>                     physical id: 2
>                     logical name: /dev/mmcblk2p2
>                     version: 1.0
>                     serial: 8a90ac7c-4c44-4750-83c5-0857f41ade6a
>                     size: 3713MiB
>                     capacity: 3713MiB
>                     capabilities: primary journaled extended_attributes large_files dir_nlink recover extents ext4 ext2 initialized
>                     configuration: created=2020-01-29 04:49:55 filesystem=ext4 label=OLPCRoot lastmountpoint=/ modified=2020-10-19 19:23:30 mounted=2021-09-03 01:06:32 state=clean
>          *-usb:0
>               description: USB controller
>               product: VT82xx/62xx UHCI USB 1.1 Controller
>               vendor: VIA Technologies, Inc.
>               physical id: 10
>               bus info: pci@0000:00:10.0
>               version: a0
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm uhci bus_master cap_list
>               configuration: driver=uhci_hcd latency=32
>               resources: irq:20 ioport:8000(size=32)
>          *-usb:1
>               description: USB controller
>               product: VT82xx/62xx UHCI USB 1.1 Controller
>               vendor: VIA Technologies, Inc.
>               physical id: 10.1
>               bus info: pci@0000:00:10.1
>               version: a0
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm uhci bus_master cap_list
>               configuration: driver=uhci_hcd latency=32
>               resources: irq:22 ioport:8020(size=32)
>          *-usb:2
>               description: USB controller
>               product: VT82xx/62xx UHCI USB 1.1 Controller
>               vendor: VIA Technologies, Inc.
>               physical id: 10.2
>               bus info: pci@0000:00:10.2
>               version: a0
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm uhci bus_master cap_list
>               configuration: driver=uhci_hcd latency=32
>               resources: irq:21 ioport:8040(size=32)
>          *-usb:3
>               description: USB controller
>               product: USB 2.0
>               vendor: VIA Technologies, Inc.
>               physical id: 10.4
>               bus info: pci@0000:00:10.4
>               version: 90
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pm debug ehci bus_master cap_list
>               configuration: driver=ehci-pci latency=32
>               resources: irq:23 memory:80003000-800030ff
>          *-isa
>               description: ISA bridge
>               product: VX855/VX875 Bus Control and Power Management
>               vendor: VIA Technologies, Inc.
>               physical id: 11
>               bus info: pci@0000:00:11.0
>               version: 00
>               width: 32 bits
>               clock: 33MHz
>               capabilities: isa pm cap_list
>               configuration: latency=0
>             *-pnp00:00
>                  product: System Board
>                  physical id: 0
>                  capabilities: pnp
>                  configuration: driver=system
>             *-pnp00:01
>                  product: Motherboard registers
>                  physical id: 1
>                  capabilities: pnp
>                  configuration: driver=system
>             *-pnp00:02
>                  product: PS/2 Port for PS/2-style Mice
>                  physical id: 2
>                  capabilities: pnp
>                  configuration: driver=i8042 aux
>             *-pnp00:03
>                  product: IBM Enhanced keyboard controller (101/2-key)
>                  physical id: 3
>                  capabilities: pnp
>                  configuration: driver=i8042 kbd
>             *-pnp00:04
>                  product: AT Real-Time Clock
>                  physical id: 4
>                  capabilities: pnp
>                  configuration: driver=rtc_cmos
>             *-pnp00:05
>                  product: Motherboard registers
>                  physical id: 5
>                  capabilities: pnp
>                  configuration: driver=system
>             *-pnp00:06
>                  product: System Board
>                  physical id: 6
>                  capabilities: pnp
>                  configuration: driver=system
>          *-pci
>               description: PCI bridge
>               product: VX855/VX875/VX900 PCI to PCI Bridge
>               vendor: VIA Technologies, Inc.
>               physical id: 13
>               bus info: pci@0000:00:13.0
>               version: 00
>               width: 32 bits
>               clock: 33MHz
>               capabilities: pci normal_decode bus_master cap_list
>          *-multimedia
>               description: Audio device
>               product: VT8237A/VT8251 HDA Controller
>               vendor: VIA Technologies, Inc.
>               physical id: 14
>               bus info: pci@0000:00:14.0
>               logical name: card0
>               logical name: /dev/snd/controlC0
>               logical name: /dev/snd/pcmC0D0c
>               logical name: /dev/snd/pcmC0D0p
>               version: 20
>               width: 64 bits
>               clock: 33MHz
>               capabilities: pm msi pciexpress bus_master cap_list
>               configuration: driver=snd_hda_intel latency=0
>               resources: irq:17 memory:80004000-80007fff
>             *-input:0
>                  product: HDA VIA VT82xx Mic
>                  physical id: 0
>                  logical name: input6
>                  logical name: /dev/input/event4
>             *-input:1
>                  product: HDA VIA VT82xx Headphone
>                  physical id: 1
>                  logical name: input7
>                  logical name: /dev/input/event5
>       *-pci:1
>            description: Host bridge
>            product: VX855/VX875 Error Reporting
>            vendor: VIA Technologies, Inc.
>            physical id: 101
>            bus info: pci@0000:00:00.1
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:2
>            description: Host bridge
>            product: VX855/VX875 Host Bus Control
>            vendor: VIA Technologies, Inc.
>            physical id: 102
>            bus info: pci@0000:00:00.2
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:3
>            description: Host bridge
>            product: VX855/VX875 DRAM Bus Control
>            vendor: VIA Technologies, Inc.
>            physical id: 103
>            bus info: pci@0000:00:00.3
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:4
>            description: Host bridge
>            product: VX855/VX875 Power Management Control
>            vendor: VIA Technologies, Inc.
>            physical id: 104
>            bus info: pci@0000:00:00.4
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:5
>            description: Host bridge
>            product: VX855/VX875 Scratch Registers
>            vendor: VIA Technologies, Inc.
>            physical id: 105
>            bus info: pci@0000:00:00.6
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:6
>            description: Host bridge
>            product: VX855/VX875 North-South Module Interface Control
>            vendor: VIA Technologies, Inc.
>            physical id: 106
>            bus info: pci@0000:00:00.7
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>       *-pci:7
>            description: Host bridge
>            product: VX8xx South-North Module Interface Control
>            vendor: VIA Technologies, Inc.
>            physical id: 107
>            bus info: pci@0000:00:11.7
>            version: 00
>            width: 32 bits
>            clock: 33MHz
>            configuration: latency=8
>    *-input:0
>         product: Lid Switch
>         physical id: 1
>         logical name: input0
>         logical name: /dev/input/event0
>         capabilities: platform
>    *-input:1
>         product: Power Button
>         physical id: 2
>         logical name: input1
>         logical name: /dev/input/event1
>         capabilities: platform
>    *-input:2
>         product: AT Translated Set 2 keyboard
>         physical id: 3
>         logical name: input2
>         logical name: /dev/input/event2
>         capabilities: i8042
>    *-input:3
>         product: FSPPS/2 Sentelic FingerSensingPad
>         physical id: 4
>         logical name: input4
>         logical name: /dev/input/event6
>         capabilities: i8042
>    *-input:4
>         product: EBook Switch
>         physical id: 5
>         logical name: input5
>         logical name: /dev/input/event3
>         capabilities: platform
>    *-network
>         description: Wireless interface
>         physical id: 6
>         logical name: wlan0
>         serial: 68:a3:c4:cf:8d:fa
>         capabilities: ethernet physical wireless
>         configuration: broadcast=yes driver=libertas driverversion=COMM-USB8388-323.p0 firmware=9.70.20.p0 multicast=yes wireless=IEEE 802.11