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>
32 lines
1.1 KiB
Bash
Executable File
32 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# CP Plus CP-UNC-TA21L2C (Goke gk7205v200, SmartSens SC223A) board pinmux.
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#
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# Runs after S70vendor (load_goke), overriding the SDK board=demo defaults
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# for this board's actual wiring:
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# - the SC223A i2c is on hardware I2C0 routed to the VI-RAW pads
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# (0x60/0x64 func2), not the default mipi-sensor pads (0x30/0x34 func1);
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# - sensor reset/enable is GPIO8_7 (SENSOR_RSTN, func2);
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# - the SC223A needs a 27 MHz MCLK (div6 = 0x19); the SDK default 0x11
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# (div4) is wrong, so the sensor never ACKs without this.
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# (load_goke already muxes SENSOR_CLK 0x112c0028 to func1, so it is left as-is.)
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#
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case "$1" in
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start)
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devmem 0x112c0030 32 0x0 # default I2C0 SDA -> GPIO (de-mux)
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devmem 0x112c0034 32 0x0 # default I2C0 SCL -> GPIO (de-mux)
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devmem 0x112c0060 32 0x2 # GPIO7_2 -> I2C0_SDA (func2, VI-RAW)
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devmem 0x112c0064 32 0x2 # GPIO7_3 -> I2C0_SCL (func2, VI-RAW)
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devmem 0x112c0048 32 0x2 # GPIO8_7 -> SENSOR_RSTN (func2)
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devmem 0x120100f0 32 0x19 # sensor MCLK = 27 MHz (div6)
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;;
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stop)
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;;
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*)
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echo "Usage: $0 {start}"
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exit 1
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;;
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esac
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