修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/Documentation/ABI/testing/sysfs-bus-intel_th-output-devices
..
..
@@ -3,11 +3,13 @@
3
3
 KernelVersion:	4.3
4
4
 Contact:	Alexander Shishkin <alexander.shishkin@linux.intel.com>
5
5
 Description:	(RW) Writes of 1 or 0 enable or disable trace output to this
6
-		output device. Reads return current status.
6
+		output device. Reads return current status. Requires that the
7
+		correstponding output port driver be loaded.
7
8
 
8
9
 What:		/sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/port
9
10
 Date:		June 2015
10
11
 KernelVersion:	4.3
11
12
 Contact:	Alexander Shishkin <alexander.shishkin@linux.intel.com>
12
13
 Description:	(RO) Port number, corresponding to this output device on the
13
-		switch (GTH).
14
+		switch (GTH) or "unassigned" if the corresponding output
15
+		port driver is not loaded.