No description
Ryan Malloy
d9f51548e0
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 |
||
|---|---|---|
| docs | ||
| firmware | ||
| firmware-driver | ||
| firmware-dump | ||
| tools | ||
| .gitignore | ||
| dvb-s2-investigation.md | ||
| firmware-analysis-v206-vs-v213.md | ||
| gp8psk-driver-analysis.md | ||
| gpif-streaming-analysis.md | ||
| kernel-fw01-analysis.md | ||
| rev2-deep-analysis.md | ||
| skywalker1-hardware-reference.md | ||
| tuning-protocol-analysis.md | ||
| vendor-commands-unknown.md | ||