修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/Documentation/ABI/testing/sysfs-dev
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@@ -9,9 +9,10 @@
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 		the form "<major>:<minor>".  These links point to the
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 		corresponding sysfs path for the given device.
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-		Example:
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-		$ readlink /sys/dev/block/8:32
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-		../../block/sdc
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+		Example::
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+
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+		  $ readlink /sys/dev/block/8:32
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+		  ../../block/sdc
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 		Entries in /sys/dev/char and /sys/dev/block will be
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 		dynamically created and destroyed as devices enter and