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+What: /dev/jtag[0-9]+
+Date: October 2017
+KernelVersion: 4.15
+Contact: oleksandrs@mellanox.com
+Description:
+ The misc device files /dev/jtag* are the interface
+ between JTAG master interfase and userspace.
+
+ The ioctl(2)-based ABI is defined and documented in
+ [include/uapi]<linux/jtag.h>.
+
+ The following file operations are supported:
+
+ open(2)
+ The argument flag currently support only one access
+ mode O_RDWR.
+
+ ioctl(2)
+ Initiate various actions.
+ See the inline documentation in [include/uapi]<linux/jtag.h>
+ for descriptions of all ioctls.
+
+ close(2)
+ Stops and free up the I/O contexts that was associated
+ with the file descriptor.
+
+Users: TBD
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