Dmitry IlyinandGitHub 96633d5577 gk7205v200: add an OTG profile that makes the camera a USB webcam (#113)
Adds gk7205v200_otg_generic, a firmware profile that puts the single DWC3
controller into dual-role so the board can either consume a USB webcam
(existing usbcam path, host role) or present itself to a PC as one (UVC
gadget, device role). The roles are mutually exclusive -- xHCI HCSPARAMS1
reports MaxPorts = 1 -- but usb-mode switches between them at runtime, so
one image covers both and no reboot is needed.

Kernel side, three patches:

0015 sets dr_mode = "otg" in the DTS so dwc3 registers both an xHCI host
and a UDC.

0016 makes device mode actually work on a part that has only ever run as
a host. Three fixes: re-run dwc3_event_buffers_setup() on gadget start
(an xHCI reset wipes GEVNTADR), soft-reset the core before taking the
lock so the PHY is re-initialised (without it high-speed chirp fails),
and swallow the run_stop timeout on pullup(0), which otherwise
permanently poisons cdev->deactivations.

0017 disables the vendor's UVC_SG_REQ path. It hands a whole frame to the
UDC as one scatter-gather request; dwc3 chains those sg entries into a
single isochronous service interval, which on a full-speed link is one
1023-byte packet, so every frame larger than that reached the host
truncated and H.264 decoders reported "bytestream -5" on roughly half the
frames. Goke never shipped this path enabled -- CONFIG_USB_CONFIGFS_F_UVC
is unset in every vendor defconfig, including gk7605v100's, and the SDK
carries no userspace UVC sample -- so it was never exercised. The
mainline path (32 plain one-packet requests) is used instead.

Userspace side: usb-mode switches roles with the unbind/flip/bind
sequencing dwc3_set_mode() does not do on its own, uvc-gadget-setup
composes the configfs gadget, and S72usbmode forces a concrete role at
boot -- not optional, since dr_mode = "otg" leaves GCTL.PRTCAPDIR in a
state this 4.9 dwc3 never moves off by itself.

The descriptors advertise exactly the one format, frame size and interval
majestic is configured to serve, read from /etc/majestic.yaml. majestic
answers every PROBE/COMMIT with its own bFormatIndex/bFrameIndex because
it has one stream and cannot follow the host, so anything extra is an
invitation to select something that will not arrive: asking for MJPEG got
raw H.264 (an SPS where a JPEG SOI belongs, garbage to every consumer),
and asking for 1080p got 720p.

Profile drops the air-unit packages (wifibroadcast, rtl8812au, mavfwd,
mavlink-router, vtund, linux-firmware, wireless-tools) and the whole
wireless kernel stack, which pays for usb_f_uvc.ko and for keeping the
full sensor list -- the fpv trim to IMX307/IMX335 is keyed on
OPENIPC_VARIANT="fpv", and a general-purpose USB webcam should not be
sensor-locked.

Measured on a gk7205v200 lab board over a full-speed link: H.264
1280x720 at 30 fps with zero decoder errors and no dropped buffers, and
MJPEG delivering valid JPEGs at the jpeg channel's own rate.

Requires a majestic built with ENABLE_UVC_GADGET to feed the gadget;
that is a separate change.
2026-07-28 23:21:12 +03:00
2025-06-01 15:21:40 +02:00
2023-11-30 00:08:31 +03:00
2024-03-20 17:05:18 +03:00
2025-02-09 15:40:03 +03:00
2024-03-25 21:28:10 +01:00

OpenIPC logo

OpenIPC Builder

(based on Buildroot)

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Specialized features

  • Tweaker for automatically configuring devices according to profile (gpio, wifi, etc).
  • Specialized storage location for customized firmware for well-known devices.
  • QR code recognition to automatically connect to WiFi on your home network.

List of known and supported devices

Aoni EP01J05             T31L         ?         RTL8188FU_USB    NOR_16M   new
Azarton C1               T20X         JXF23     RTL8189FS_SDIO   NOR_16M   done
Azarton C1               T31X         GC2053    RTL8189FS_SDIO   NOR_16M   done
Babysense See HD IP206   SSC333       GC2053    RTL8188FU_USB    NOR_16M   done
Bathhouse                HI3518EV300  ?         RTL8188FU_USB    NOR_8M    research
Botslab C213             T23N         SC3332    ATBM6012B_USB    NOR_8M    **INIT** - frozen
CCDCAM IM50Q01           SSC377QE     IMX335    -                NOR_16M   done
ChinaTelecom DS-YTJ5301  SSC30KD      GC2053    RTL8188FU_USB    NOR_16M   video-ok, wifi-no, motors-no
ChinaTelecom Y4H-50      T31L         ?         ?                NOR_16M   new
CMCC HDC-51 A5-V12       T21N         SC2235    RTL8189FTV_SDIO  NOR_16M   done
CMCC HDC-51 A6-V10       T31L         JXF37     RTL8188FU_USB    NOR_16M   done
CMCC HDC-51 A6-V11       T31L         SC2332    RTL8188FU_USB    NOR_16M   done
Cootli CAMV0103          GK7202V300   SC223A    SSV6355_USB      NOR_8M    in progress
CP Plus CP-UNC-TA21L2C   GK7205V200   SC223A    -                NOR_16M   video-ok, ir-cut-no, audio-no
Emax Wyvern Link         SSC338Q      IMX415                     NOR_16M   done
Foscam X5                SSC337DE     GC4653    RTL8188FU_USB    NOR_16M   done
G.Craftsman GCA50        T31ZX        GC4653    -                NOR_16M   done
EC37-T11                 T20L         SC2232    RTL8188FU_USB    MOR_16M   in progress
H3C TC2101               SSC337       JXQ03     RTL8188FU_USB    NOR_16M   done
HB-WIFI-Z6 v1.2          T10          JXH62     RTL8188EU_USB    NOR_8M    in progress
iFlytek XFP301-M         T31ZX        JXQ03     RTL8188FU_USB    NOR_16    research
Imilab EC3 CMSXJ25A      SSC325       GC2053    MT7603UN_?       NOR_16M   in progress
Dahua IPC-HFW1230SP-V2   SSC335DE     GC2053                     NOR_16M   done
Imou IPC-C22E-S2-v2      SSC335DE     GC2053    RTL8188FU_USB    NOR_16M   done
Imou IPC-C22EP-S2        SSC325DE     SC2239    RTL8188FU_USB    NAND      testing stage 1
Imou IPC-C22EP-S2 ?      SSC325DE     SC2335    RTL8188FU_USB    NAND      wait sensor driver
Imou IPC-С22СP           SSC325       SC2239    RTL8188FU_USB    NOR_8M    in progress
Jooan A6M-U              T23N         SC1346    ATBM6012B_USB    NOR_8M    **INIT** - in progress
Jooan A6M-U vB           T23N         SC1A4T    ATBM6012B_USB    NOR_8M    **INIT** - in progress
Jooan Q3R-U              T23N         SC1346    ATBM6012B_USB    NOR_8M    **INIT** - in progress
JVS INGT10 GQS60EP       T10A         OV9750    -                NOR_8M    done
Lenovo Snowman 1080P     HI3518EV200  SC2035    RTL8188EUS_USB   NOR_16M   in progress, LightSensor-no
LSC 3215672              T23N         SC2331    ATBM6012B_USB    NOR_8M    **INIT** - progress
Meari Speed 6S           SSC333       JXF37     RTL8188FU_USB    NOR_16M   video-yes, wifi-yes, motors-no
OpenIPC AIO Mario        SSC338Q      IMX335    RTL8812AU_USB    NOR_16M   done
OpenIPC AIO Thinker      SSC338Q      IMX335                     NOR_16M   done
OpenIPC AIO UltraSight   SSC338Q      IMX415    RTL8812AU_USB    NOR_16M   done
OpenIPC URLLC            SSC338Q                                 NOR_16M   done
Qtech QVC-IPC-136W       HI3518EV200  OV9732    RTL8188EU_USB    NOR_16M   done
Rostelecom IPC8232SWC-WE HI3516EV300  SP2305    RTL8188FU_USB    NAND      done
RunCam WiFiLink          SSC338Q      IMX415                     NOR_16M   done
RVi-1NCMW2028 (2.8)      HI3516EV300  SC2330    RTL8188FU_USB    NAND      testing
Smartwares CIP-37210     HI3518EV200  OV9732    RTL8188FU_USB    NOR_16M   done
Smartwares CIP-37210AT   T21N         JXF37     RTL8188FU_USB    NOR_16M   done
Switcam HS303 v1         HI3518EV200  JXF22     RTL8188FU_USB    NOR_16M   done
Switcam HS303 v2         HI3518EV200  OV9732    RTL8188EU_USB    NOR_16M   done
Tiandy TC-C321N          GK7205V200   OS02G10   -                NOR_8M    done
Tiandy TC-C321N v2       SSC337       SC2336P   -                NOR_8M    done
Tiandy TC-C32QN          GK7205V210   OS02G10   -                NOR_8M    done
TP-Link Kasa KC110       HI3518EV200  OV2735    RTL8188FU_USB    NOR_16M   ptz-yes, video-WIP (pending majestic MIPI fix)
TP-Link Tapo C110 v1     SSC335       SC3335    ATBM6032i_USB    NOR_8M    done
TP-Link Tapo C110 v1     SSC337       SC3335    SSW101B_USB      NOR_8M    done
TP-Link Tapo C110 v2     SSC333       SC3338    SSW101B_USB      NOR_8M    done
TP-Link Tapo C110 v26    SSC333       ?         ?                NOR_?     done
TP-Link Tapo C310 v1     SSC325       SC3335    RTL8192EU_USB    NOR_8M    in progress
TP-Link Tapo C310 v2.20  SSC335       SC3338    RTL8192EU_USB    NOR_8M    testing
TP-Link Tapo TC60 V5     T23N                   WQ9001_?         NOR_8M    **INIT** - frozen
TP-Link Tapo TC70 V3     T31L         SC2336    RTL8188FU_USB    NOR_8M    done
Trassir TR-D4121IR1 v2   HI3516CV200  AR0237    -                NOR_16M   done
Trassir TR-W2C1 v1       SSC325       GC2053    MT7601U_USB      NOR_16M   done
Trassir TR-W2C1 v2       SSC335       GC2053    MT7601U_USB      NOR_16M   done
Tuya GV7630-T31-PTZ      T31L         SC2336    ATBM6012B_USB    NOR_8M    in progress
Umea QC012               GK7102C_A    MIS2003   RDA5995_USB      MOR_8M    wip
Uniview C1L-2WN-G        SSC335DE     OS02G10   RTL8188FU_USB    NOR_16M   done
Vixand IPC-1             GK7205V200   none      EC200N_USB       NOR_8M    frozen
Vixand IPH-5-4G          GK7205V200   SC2239    EC200N_USB       NOR_8M    frozen
Vixand IVG-G3S           GK7205V210   IMX307    -                NOR_16M   in progress
Vixand IVG-G4F-A         GK7205V210   SC223A    -                NOR_16M   in progress
Vixand IVG-G4F-A-W       GK7205V210   SC223A    ATBM6032i_USB    NOR_16M   w/ext wifi board
Vixand IVG-G4H           GK7205V210   MIS2008   -                NOR_16M   done
Vixand IVG-G6S           GK7205V300   IMX335    -                NOR_16M   done
Vixand IVG-G6S-W         GK7205V300   IMX335    ATBM6032i_USB    NOR_16M   w/ext wifi board
VStarcam C43S(B)         SSC333       JXF37     MT7601U_USB      NOR_16M   in progress
VStarcam CS55            T31N         GC2053    RTL8188FU_USB    NOR_16M   in progress
VStarcam C8622           T23N         SC2336P   AIC8800DL_?      NOR_8M    **INIT** - in progress
VStarcam C8892WIP        HI3518EV200  AR0237    MT7601U_USB      NOR_16M   done
VStarcam C8896WIP        GK7102C_A    GC2033    RTL8189ES_SDIO   NOR_8M    wip
Wansview Q5 1080p        T21Z         OV2735B   RTL8188FU_USB    NOR_16M   in progress
Wansview Q5 2K           T31L         SC2336    ATBM6031_SDIO    NOR_8M    done
Wyze V3 (WYZEC3B)        T31X         GC2053    RTL8189FS_SDIO   NOR_16M   done
X-06S v2.2               T21          JXH62     RTL8188FU_USB    NOR_8M    in progress
Xiaomi MJSXJ02HL         HI3518EV300  JXF22     RTL8189FS_SDIO   NOR_16M   preparation
Xiaomi MJSXJ03HL         T31N         JXQ03     RTL8189FS_SDIO   NOR_16M   done
Xiaomi MJSXJ03HL         T31N         JXQ03P    RTL8189FS_SDIO   NOR_16M   done
Xiaomi MJSXJ05HL         T31L         GC2053    ATBM6031_SDIO    NOR_16M   preparation
ZTE K540                 T31X         SC4336    ATBM6012B_USB    NOR_16M   done
4G Camera XG521 V1.2     GK7202V300   GC1054    EC800E-CN_USB    NOR_8M    done
XM IPG-G3-WR             GK7202V300   JXH63     ATBM60321S_USB   NOR_8M    done

Compatibility and clones

Many devices sold in online stores are clones of original devices or, more often, devices adapted for the local national market.

Model names                            Our firmware

Dahua IPC-HFW1230SP-V3          =>     Dahua IPC-HFW1230SP-V2
Dahua IPC-C22C-LC               =>     Imou IPC-С22CP
Imou IPC-С22EP-A                =>     Imou IPC-С22CP
Imou IPC-F22AP                  =>     Imou IPC-С22CP
Switcam HS303 v3                =>     Qtech QVC-IPC-136W
Tiandy TC-C320N                 =>     Tiandy TC-C321N
Tiandy TC-C320N v2              =>     Tiandy TC-C321N v2
TP-Link Tapo C110 v2.20         =>     TP-Link Tapo C110 v2
TP-Link Tapo C200 v3.00         =>     TP-Link Tapo TC70 V3
Rostelecom IPC8232SWC-WE-B      =>     Uniview C1L-2WN-G
Rostelecom IPC C22E-S2 v2       =>     Imou IPC-C22E-S2-v2
Uniview C1L-2WN-G-RU            =>     Uniview C1L-2WN-G

Device setup

WiFi Settings

Run these commands and enjoy:

fw_setenv wlanssid 'OpenIPC'
fw_setenv wlanpass 'mypassword'
reboot

Requirements for registration of new devices

When adding new devices, please follow a few simple rules. The list of files to be added should be minimal, try not to store binary files, remember that all common files and configurations should be stored in the firmware repository. However, some list of files must be required.

processor_flavor_vendor-model-version/br-ext-chip-sigmastar/configs/processor_flavor_vendor-model-version_defconfig
processor_flavor_vendor-model-version/general/overlay/usr/share/openipc/customizer.sh
processor_flavor_vendor-model-version/general/scripts/excludes/processor_flavor.list

The file names contain variables with option names - flavor, model, processor, vendor, version

  • flavor - firmware direction in the openipc system, by default try to use "lite" as much as possible
  • model - official model name from the main device manufacturer
  • processor - official name of the processor in the OpenIPC structure
  • vendor - the name of the official equipment manufacturer; if there are several of them, a description is created
  • version - usually this is an addition to the model, version or revision of hardware differences

Preparing and using the project

sudo apt-get update -y
sudo apt-get install -y automake autotools-dev bc build-essential curl fzf git libtool rsync \
  unzip mc tree python-is-python3
git clone https://github.com/openipc/builder.git
cd builder
./builder.sh

Create firmware with built-in credentials

  • Usage: repack.sh [uboot] [firmware] [ssid] [pass]
sh repack.sh ssc337de ssc337de_ultimate_foscam-x5-nor router password

Existing problems

  • On some devices NOR flash 8M is small, and the WiFi driver is very large and the QR scanner currently does not fit into the firmware

Additional information

Technical support and donations

Please support our project with donations or orders for development or maintenance. Thank you!

Open Collective donate button

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