diff options
Diffstat (limited to 'Documentation/ABI/stable/sysfs-bus-mhi')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-bus-mhi | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-mhi b/Documentation/ABI/stable/sysfs-bus-mhi index 96ccc3385a2b..8b9698fa0beb 100644 --- a/Documentation/ABI/stable/sysfs-bus-mhi +++ b/Documentation/ABI/stable/sysfs-bus-mhi @@ -1,7 +1,7 @@ What: /sys/bus/mhi/devices/.../serialnumber Date: Sept 2020 KernelVersion: 5.10 -Contact: Bhaumik Bhatt <bbhatt@codeaurora.org> +Contact: mhi@lists.linux.dev 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 @@ -12,7 +12,7 @@ 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 <bbhatt@codeaurora.org> +Contact: mhi@lists.linux.dev 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 @@ -29,3 +29,16 @@ Description: Initiates a SoC reset on the MHI controller. A SoC reset is 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. + +What: /sys/bus/mhi/devices/.../trigger_edl +Date: April 2024 +KernelVersion: 6.10 +Contact: mhi@lists.linux.dev +Description: Writing a non-zero value to this file will force devices to + enter EDL (Emergency Download) mode. This entry only exists for + devices capable of entering the EDL mode using the standard EDL + triggering mechanism defined in the MHI spec v1.2. Once in EDL + mode, the flash programmer image can be downloaded to the + device to enter the flash programmer execution environment. + This can be useful if user wants to use QDL (Qualcomm Download, + which is used to download firmware over EDL) to update firmware. |