summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/stable/sysfs-bus-mhi
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/ABI/stable/sysfs-bus-mhi
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/stable/sysfs-bus-mhi')
-rw-r--r--Documentation/ABI/stable/sysfs-bus-mhi31
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-mhi b/Documentation/ABI/stable/sysfs-bus-mhi
new file mode 100644
index 000000000..96ccc3385
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-bus-mhi
@@ -0,0 +1,31 @@
+What: /sys/bus/mhi/devices/.../serialnumber
+Date: Sept 2020
+KernelVersion: 5.10
+Contact: Bhaumik Bhatt <bbhatt@codeaurora.org>
+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 <bbhatt@codeaurora.org>
+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: mhi@lists.linux.dev
+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.