erik Hi , I set the GPIO by using code
dai::Device::Config pipeline_config = this->pipeline_->getDeviceConfig();
pipeline_config.board.gpio = dai::BoardConfig::GPIO(dai::BoardConfig::GPIO::Direction::OUTPUT,dai::BoardConfig::GPIO::Level::HIGH);
I think it should be working, since one of the camera in CAM A and CAM D is driven by the trigger? I changed the ffc cable between CAM A and CAM D, the problem is the same, it should not be the hardware issus?