| What: /sys/bus/spi/<dev>/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/<dev>/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. |