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- What: /sys/bus/mhi/devices/.../serialnumber
- Date: Sept 2020
- KernelVersion: 5.10
- Contact: Bhaumik Bhatt <[email protected]>
- Description: The file holds the serial number of the client device obtained
- using a BHI (Boot Host Interface) register read after at least
- one attempt to power up the device has been done. If read
- without having the device power on at least once, the file will
- read all 0's.
- Users: Any userspace application or clients interested in device info.
- What: /sys/bus/mhi/devices/.../oem_pk_hash
- Date: Sept 2020
- KernelVersion: 5.10
- Contact: Bhaumik Bhatt <[email protected]>
- Description: The file holds the OEM PK Hash value of the endpoint device
- obtained using a BHI (Boot Host Interface) register read after
- at least one attempt to power up the device has been done. If
- read without having the device power on at least once, the file
- will read all 0's.
- Users: Any userspace application or clients interested in device info.
- What: /sys/bus/mhi/devices/.../soc_reset
- Date: April 2022
- KernelVersion: 5.19
- Contact: [email protected]
- Description: Initiates a SoC reset on the MHI controller. A SoC reset is
- a reset of last resort, and will require a complete re-init.
- This can be useful as a method of recovery if the device is
- non-responsive, or as a means of loading new firmware as a
- system administration task.
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