edb7251bf3
Dahua-OEM 2 MP camera. The SC223A is on hardware I2C0 routed to the VI-RAW pads (0x112c0060/0x64 func2) rather than the default mipi-sensor pads (0x30/0x34 func1) the SDK probes, and needs a 27 MHz MCLK (0x120100f0=0x19; SDK default 0x11/div4 leaves it unresponsive). S71devmem re-muxes the pads, selects the SENSOR_RSTN reset (GPIO8_7 func2) and fixes MCLK after S70vendor/load_goke; the stock open_sensor_i2c then reaches the sensor over /dev/i2c-0. No kernel module needed. Verified on hardware: chip-id 0xcb3e over HW I2C0, MIPI lock 1920x1080 zero errors, majestic streams correct colour 1080p. Co-authored-by: build <build@local> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
1.5 KiB
OpenIPC Builder
Experimental system for building OpenIPC firmware for known devices
Release notes for the device
CP Plus CP-UNC-TA21L2C — Dahua-OEM 2 MP full-colour bullet/turret camera.
| SoC | Goke gk7205v200 (lite), ARM Cortex-A7 |
| Sensor | SmartSens SC223A (chip-id 0xcb3e), 2-lane MIPI, 1080p30 |
| Flash | 16 MiB SPI-NOR (XM25QH128); built with the standard 8 MiB layout |
| Wi-Fi | none (wired-only) |
| Audio | present on the hardware; not wired up in this profile yet |
Board specifics
The SC223A on this board is on the SoC's hardware I2C0, routed to the
VI-RAW pads (0x112c0060/0x64, func2) instead of the default mipi-sensor
pads (0x112c0030/0x34, func1) that the SDK board=demo bring-up probes. The
sensor also needs a 27 MHz MCLK (0x120100f0 = 0x19, div6); the SDK default
0x11 (div4) leaves it unresponsive. Both are handled in
general/overlay/etc/init.d/S71devmem, which runs after S70vendor
(load_goke) and before S95majestic. No kernel module is required — the
stock open_sensor_i2c reaches the sensor over /dev/i2c-0 once the pads are
muxed. Sensor reset/enable is GPIO8_7 (SENSOR_RSTN, func2).
Verified on hardware: chip-id 0xcb3e over HW I2C0, MIPI PHY lock at
1920x1080 with zero error counters, majestic streams correct colour 1080p.
TODO
- Characterise and wire up the IR-cut / night-mode GPIOs.
- Enable audio.