Here is a list of all variables with links to the files they belong to:

fan_ctrl_update_interval : fan_ctrl.c
fan_ctrl_update_timer : fan_ctrl.c
fan_ctrl_update_worker : fan_ctrl.c
fan_rpm : fan_ctrl.c
fan_speed : fan_ctrl.c
fan_speed_feedback : fan_ctrl.c
fan_speed_forced : fan_ctrl.c
final_arbiter_count : aiclk_ppm.c
flash : eth.c, gddr.c, serdes_eth.c, spi_eeprom.c, tensix_init.c
flash_locked : spi_eeprom.c
flush_timer : tt_pcie_log.c
flush_work : tt_pcie_log.c
framed_buffer_pos : tt_pcie_log.c
framed_log_buffer : tt_pcie_log.c
freq_margin_mhz : vf_curve.c
fw_table_voltage_margin_mv : vf_curve.c
fwtable_dev : aiclk_ppm.c, chip_info_fwtable.c, eth.c, fan_ctrl.c, gddr.c, regulator.c, tensix_init.c, throttler.c, vf_curve.c, voltage.c