Replaces speculative "corrupted boot data" with confirmed I2C bus
latch diagnosis from 100+ failed power cycle attempts. Mark
Option D (wait + watch) as exhausted. Add pending firmware fixes
table for post-recovery testing.
Apply .gitattributes normalization to convert all CRLF line
endings inherited from Windows-origin source files to Unix LF.
175 files, zero content changes.
Merges 11 separate analysis documents into a single 1700-line
authoritative reference covering hardware, USB, vendor commands,
BCM4500 demodulator, tuning protocol, GPIF streaming, LNB/DiSEqC,
GPIO map, firmware versions, I2C bus architecture, and all known
quirks/errata. Corrects BCM4500 I2C address to 0x08 (7-bit)
throughout.
Removed I2CS bmSTOP "bus reset" from bcm4500_boot() and debug modes.
Sending STOP with no active transaction puts the FX2 I2C controller
into an inconsistent state where subsequent START+ACK detection fails.
Root cause identified through incremental debug modes (wValue 0x80-0x85)
on live hardware: mode 0x82 (with bmSTOP) fails, mode 0x85 (identical
but without bmSTOP) succeeds. Raw I2C reads confirm BCM4500 is alive
the entire time -- only the controller state is corrupted.
BCM4500 now boots successfully in ~90ms. Three I2C devices found on
bus: 0x08 (BCM4500), 0x10 (tuner/LNB), 0x51 (EEPROM).
Also in this commit:
- Timeout-protected I2C functions replacing fx2lib bare while loops
- I2C bus scan and debug mode infrastructure
- Kernel driver blacklist for dvb_usb_gp8psk
- Test tools for incremental boot debugging
- Technical findings documented in docs/boot-debug-findings.md
Includes original BDA driver source (headers, C++ implementation, INF
installer files), DiSEqC implementation PDF with extracted markdown
and SVG vector graphics.
