From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED,
	DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,
	HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,
	USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id 0E134C433F5
	for <linux-kernel@archiver.kernel.org>; Sun,  5 Sep 2021 08:21:00 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id DF588600D4
	for <linux-kernel@archiver.kernel.org>; Sun,  5 Sep 2021 08:20:59 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S236482AbhIEIWB (ORCPT <rfc822;linux-kernel@archiver.kernel.org>);
        Sun, 5 Sep 2021 04:22:01 -0400
Received: from mout.web.de ([212.227.15.14]:50211 "EHLO mout.web.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S229482AbhIEIWA (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Sun, 5 Sep 2021 04:22:00 -0400
X-Greylist: delayed 304 seconds by postgrey-1.27 at vger.kernel.org; Sun, 05 Sep 2021 04:21:59 EDT
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de;
        s=dbaedf251592; t=1630830056;
        bh=lxnOS28SsyIyZrAtRYCNYekw7uIjiuLhEP5C5tb/QmE=;
        h=X-UI-Sender-Class:To:Cc:From:Subject:Date;
        b=ph1MGz0hz1AmQGU7IoMGZd0PAj/2TYTDDd6NKH83AcbR2y1+mpPg/9FuI1t4fZ6k6
         TjJ4Ta5sM4qVEHPxDnQT+i8KLG2KKz33cRJuDqyBlhhw44kl0cxPVxfQGZAWYWjjPH
         8nY5ZGwezwUAoqorBGP6dzc4P55mAuQISXfXA3W0=
X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9
Received: from [10.0.0.110] ([185.159.157.24]) by smtp.web.de (mrweb004
 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MZzln-1mgEwe2LbL-00LoJ9; Sun, 05
 Sep 2021 10:15:47 +0200
To:     Saravana Kannan <saravanak@google.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
From:   Andre Muller <andre.muller@web.de>
Subject: [Bisected Regression] OLPC XO-1.5: Internal drive and SD card
 (mmcblk*) gone since commit ea718c699055
Message-ID: <3c1f2473-92ad-bfc4-258e-a5a08ad73dd0@web.de>
Date:   Sun, 5 Sep 2021 10:17:28 +0200
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
 Thunderbird/78.13.0
MIME-Version: 1.0
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: quoted-printable
X-Provags-ID: V03:K1:YfOLpxInFlyPscB+X6/sxDAdwUHIZgHkjPm/9wdN4aQUOWQ+csG
 oONo+ySQ5tPkMdDnYKay7sqOOJCbVhPbIFbB811hYs56miqJepS9amar2Q99RbprRTw6K4m
 H05ZpM4clUcKnKcJJlUvWUaP/IQ3RQG7HmY+zNr60cIj0o7e3BOodsH/gS5aiDUnDR8moX4
 Nn4OLY2mrDs7bgLKMH5KQ==
X-UI-Out-Filterresults: notjunk:1;V03:K0:M95+LcEkwD4=:98thHULpeQeFacgO2Hyg2g
 aI26FaIPc2zV6b9OTo0FAYwYsEqePE3nMIY5hsY4e40gduzNFXxzWf+sxFBGxGrs5LeVrAbyD
 RpoxecsBth798q3J8d9dHPtXw7O+pqbJTRedzFnRAR23wEc9y4YUW7cslZInjKb3EK/AYZ/vm
 bb8M/PLO4rhddHNp70BBf/RMHPXUo2XCIeHmM7MKn1063s5cKn/HdkxjO2UNwIDkuDA0Wc27I
 PLYHGaAFo/yxZF2LFLtU/C1MOYfCa+Vyz5E+YeqZDTET/QDbEc4dnR4X44GEpN5VltKySH5Ba
 YNpA0tJFC4YysIWlDMx3CNI5VXkVL3QFF/+GneEyqjuU8LN5VdLBVjpm3OcEfGW0YUASNVC3o
 QGA5D6Ue4Lm70fMbQ85kNgYM9zXe7xaKr6bDmrjmYio3naDpXzqfILLn3bltdGzD3TgnD9srF
 ZMQkjOEvw2RnNHbLT+TjWynSExwHzg0gMZ82dxxSP9aOengkDrGUpc8RDKgsbypTVBrStnE5X
 23xl4KL81CC2TdB0I7JOC3vUaLVT2smHBZiTysxW3oDtzr0ai9l4rtl6oILiSvQ/TEya0pr/c
 0T0KH2xx/zpj1UfJ6oEdLXoVr3NvbAE+zWvR3g+CzMHg7XoX0y7Atif5q3usc9Zj6GuCOLOcA
 p0FY/ZT7kzQ5YVsP6llrFQlGV5O7tMHcVs1RyCffAu+o6lIiMMkeY+gfSFzmfo0E/ACNzFIEQ
 DnEDbvP5gamsMeWGAkEbzrl+bkbYQG4B9jWWO/8l8mfNmc3M1N6UzEjBi1rcjcxvCw/q0r0XA
 9aBBodM9BNtpth+Pt9nVJ4KpM399HojMVfTRltkP+FMv7zaVFerzjk14uLzoWfx6mEMAeKHVM
 ZzZLgTQONmj7rBvWrhJjhnRklK8gY5pO+tmefAuKZYy7HyLwsHViuVhXeMWkkVsWTAwNNP1v+
 2C2A84iN2LMWMiVnAVt7lOqEkK2SPOP19QezB38nGnitomthJmMOcKiYi9Yeb4MB8BuBFf9YT
 UHgDgvg0VtccXLIOnG7pkDUfzvibO7yT1W18x7nOooupcIF3mYcn9wBpMDkW3bKO7Icoi01/M
 J0QclEbTPMoYX0tJZ7dSb3pzXGIM72x+M+h0Z+Qc/ExEJyYy2y7rap5Hw==
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

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 "Rev=
ert "driver core: Set fw_devlink=3Don 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.

Thank you,
Andre M=FCller

=3D=3D=3D

# 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 Cont=
rol
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >TAbort=
- <TAbort- <MAbort- >SERR- <PERR- INTx-
         Latency: 0

00:00.4 Host bridge: VIA Technologies, Inc. VX855/VX875 Power Management C=
ontrol
         Subsystem: QUANTA Computer Inc VX855/VX875 Power Management Contr=
ol
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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 C=
ontrol (prog-if 20 [IO(X)-APIC])
         Subsystem: QUANTA Computer Inc VX855/VX875 APIC and Central Traff=
ic Control
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >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 Int=
erface Control
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >TAbort=
- <TAbort- <MAbort- >SERR- <PERR- INTx-
         Latency: 0, Cache Line Size: 32 bytes

00:01.0 VGA compatible controller: VIA Technologies, Inc. VX855/VX875 Chro=
me 9 HCM Integrated Graphics (prog-if 00 [VGA controller])
         Subsystem: QUANTA Computer Inc VX855/VX875 Chrome 9 HCM Integrate=
d Graphics
         Device tree node: /sys/firmware/devicetree/base/pci/display@1
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- =
<TAbort- <MAbort- >SERR- <PERR- INTx-
         Latency: 32
         Interrupt: pin A routed to IRQ 16
         Region 0: Memory at d0000000 (32-bit, prefetchable) [size=3D64M]
         Region 1: Memory at f0000000 (32-bit, non-prefetchable) [size=3D1=
6M]
         Expansion ROM at 000c0000 [virtual] [disabled] [size=3D128K]
         Capabilities: [60] Power Management version 2
                 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=3D0mA PME(D0-,D1-,=
D2-,D3hot-,D3cold-)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Capabilities: [90] MSI: Enable- Count=3D1/1 Maskable- 64bit-
                 Address: 00000000  Data: 0000
         Kernel driver in use: viafb

00:0c.0 SD Host controller: VIA Technologies, Inc. SDIO Host Controller (r=
ev 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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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=3D2=
56]
         Region 1: Memory at 80001000 (32-bit, non-prefetchable) [size=3D2=
56]
         Region 2: Memory at 80002000 (32-bit, non-prefetchable) [size=3D2=
56]
         Capabilities: [80] Power Management version 2
                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D375mA PME(D0+,D1=
+,D2+,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Kernel driver in use: sdhci-pci

00:10.0 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Co=
ntroller (rev a0) (prog-if 00 [UHCI])
         Subsystem: QUANTA Computer Inc VT82xx/62xx UHCI USB 1.1 Controlle=
r
         Device tree node: /sys/firmware/devicetree/base/pci/usb@10
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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=3D32]
         Capabilities: [80] Power Management version 2
                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D375mA PME(D0+,D1=
+,D2+,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Kernel driver in use: uhci_hcd

00:10.1 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Co=
ntroller (rev a0) (prog-if 00 [UHCI])
         Subsystem: QUANTA Computer Inc VT82xx/62xx UHCI USB 1.1 Controlle=
r
         Device tree node: /sys/firmware/devicetree/base/pci/usb@10,1
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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=3D32]
         Capabilities: [80] Power Management version 2
                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D375mA PME(D0+,D1=
+,D2+,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Kernel driver in use: uhci_hcd

00:10.2 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Co=
ntroller (rev a0) (prog-if 00 [UHCI])
         Subsystem: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Contro=
ller
         Device tree node: /sys/firmware/devicetree/base/pci/usb@10,2
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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=3D32]
         Capabilities: [80] Power Management version 2
                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D375mA PME(D0+,D1=
+,D2+,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Kernel driver in use: uhci_hcd

00:10.4 USB controller: VIA Technologies, Inc. USB 2.0 (rev 90) (prog-if 2=
0 [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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >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=3D2=
56]
         Capabilities: [80] Power Management version 2
                 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=3D375mA PME(D0+,D1=
+,D2+,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Capabilities: [88] Debug port: BAR=3D1 offset=3D00a0
         Kernel driver in use: ehci-pci

00:11.0 ISA bridge: VIA Technologies, Inc. VX855/VX875 Bus Control and Pow=
er 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- ParEr=
r+ Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >TAbort=
- <TAbort- <MAbort- >SERR- <PERR- INTx-
         Capabilities: [c0] Power Management version 2
                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=3D0mA PME(D0-,D1-,=
D2-,D3hot-,D3cold-)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-

00:11.7 Host bridge: VIA Technologies, Inc. VX8xx South-North Module Inter=
face Control
         Subsystem: VIA Technologies, Inc. VX8xx South-North Module Interf=
ace Control
         Device tree node: /sys/firmware/devicetree/base/pci/host@11,7
         Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dmedium >TAbort=
- <TAbort- <MAbort+ >SERR- <PERR- INTx-

00:13.0 PCI bridge: VIA Technologies, Inc. VX855/VX875/VX900 PCI to PCI Br=
idge (prog-if 00 [Normal decode])
         Device tree node: /sys/firmware/devicetree/base/pci/pci@13
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParEr=
r- Stepping- SERR+ FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >TAbort- =
<TAbort- <MAbort+ >SERR- <PERR- INTx-
         Latency: 0
         Bus: primary=3D00, secondary=3D01, subordinate=3D01, sec-latency=
=3D0
         I/O behind bridge: [disabled]
         Memory behind bridge: [disabled]
         Prefetchable memory behind bridge: [disabled]
         Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=3Dmedium >TAbort=
- <TAbort- <MAbort- <SERR- <PERR-
         BridgeCtl: Parity- SERR+ NoISA+ VGA- VGA16- MAbort- >Reset- FastB=
2B-
                 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- ParEr=
r- Stepping- SERR- FastB2B- DisINTx-
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=3Dfast >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=3D1=
6K]
         Capabilities: [50] Power Management version 2
                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=3D55mA PME(D0+,D1-=
,D2-,D3hot+,D3cold+)
                 Status: D0 NoSoftRst- PME-Enable- DSel=3D0 DScale=3D0 PME=
-
         Capabilities: [60] MSI: Enable- Count=3D1/1 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

=3D=3D=3D

# 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=3Dlaptop uuid=3D5a6dddd6-4fbe-32d5-50e9-786f74=
11eb8e
   *-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 c=
x8 apic sep mtrr pge cmov pat clflush acpi mmx fxsr sse sse2 tm nx cpuid p=
ni est tm2 xtpr rng rng_en ace ace_en ace2 ace2_en phe phe_en pmm pmm_en c=
pufreq
         *-cache:0
              description: L1 cache
              physical id: 701
              size: 128KiB
              capacity: 128KiB
              capabilities: internal write-back unified
              configuration: level=3D1
         *-cache:1
              description: L2 cache
              physical id: 703
              size: 128KiB
              capacity: 128KiB
              capabilities: internal write-back unified
              configuration: level=3D2
      *-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=3D32
         *-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=3D0
         *-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=3D32 driver=3Dviafb latency=3D32 resolu=
tion=3D1200,900
              resources: irq:16 memory:d0000000-d3ffffff memory:f0000000-f=
0ffffff 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=3Dsdhci-pci latency=3D0
              resources: irq:22 memory:80000000-800000ff memory:80001000-8=
00010ff 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=3D512 sectorsize=3D512 s=
ignature=3D304f4eb5
               *-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 initial=
ized
                    configuration: filesystem=3Dext2 lastmountpoint=3D/mnt=
/sdb1 modified=3D2021-09-04 23:01:46 mount.fstype=3Dext2 mount.options=3Dr=
w,noatime mounted=3D2021-09-04 23:01:46 state=3Dmounted
               *-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=3D512 sectorsize=3D512
               *-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 ext=
2 initialized
                    configuration: filesystem=3Dext2 label=3DBoot lastmoun=
tpoint=3D/var/lib/random-seed modified=3D2021-09-03 01:06:44 mounted=3D202=
1-09-03 01:06:32 state=3Dunknown
               *-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 la=
rge_files dir_nlink recover extents ext4 ext2 initialized
                    configuration: created=3D2020-01-29 04:49:55 filesyste=
m=3Dext4 label=3DOLPCRoot lastmountpoint=3D/ modified=3D2020-10-19 19:23:3=
0 mounted=3D2021-09-03 01:06:32 state=3Dclean
         *-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=3Duhci_hcd latency=3D32
              resources: irq:20 ioport:8000(size=3D32)
         *-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=3Duhci_hcd latency=3D32
              resources: irq:22 ioport:8020(size=3D32)
         *-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=3Duhci_hcd latency=3D32
              resources: irq:21 ioport:8040(size=3D32)
         *-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=3Dehci-pci latency=3D32
              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=3D0
            *-pnp00:00
                 product: System Board
                 physical id: 0
                 capabilities: pnp
                 configuration: driver=3Dsystem
            *-pnp00:01
                 product: Motherboard registers
                 physical id: 1
                 capabilities: pnp
                 configuration: driver=3Dsystem
            *-pnp00:02
                 product: PS/2 Port for PS/2-style Mice
                 physical id: 2
                 capabilities: pnp
                 configuration: driver=3Di8042 aux
            *-pnp00:03
                 product: IBM Enhanced keyboard controller (101/2-key)
                 physical id: 3
                 capabilities: pnp
                 configuration: driver=3Di8042 kbd
            *-pnp00:04
                 product: AT Real-Time Clock
                 physical id: 4
                 capabilities: pnp
                 configuration: driver=3Drtc_cmos
            *-pnp00:05
                 product: Motherboard registers
                 physical id: 5
                 capabilities: pnp
                 configuration: driver=3Dsystem
            *-pnp00:06
                 product: System Board
                 physical id: 6
                 capabilities: pnp
                 configuration: driver=3Dsystem
         *-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=3Dsnd_hda_intel latency=3D0
              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=3D8
   *-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=3Dyes driver=3Dlibertas driverversion=3DC=
OMM-USB8388-323.p0 firmware=3D9.70.20.p0 multicast=3Dyes wireless=3DIEEE 8=
02.11