What: /sys/bus/spi//update_firmware Date: Jul 2021 Contact: sebastian.reichel@collabora.com Description: Write 1 to this file to update the ACHC microcontroller firmware via the EzPort interface. For this the kernel will load "achc.bin" via the firmware API (so usually from /lib/firmware). The write will block until the FW has either been flashed successfully or an error occurred. What: /sys/bus/spi//reset Date: Jul 2021 Contact: sebastian.reichel@collabora.com Description: This file represents the microcontroller's reset line. 1 means the reset line is asserted, 0 means it's not asserted. The file is read and writable.