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-rw-r--r--Documentation/hwmon/lm633
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63
index df3e1ae42f39..4d30d209881a 100644
--- a/Documentation/hwmon/lm63
+++ b/Documentation/hwmon/lm63
@@ -66,7 +66,8 @@ supported either.
The lm63 driver will not update its values more frequently than configured with
the update_interval sysfs attribute; reading them more often will do no harm,
-but will return 'old' values.
+but will return 'old' values. Values in the automatic fan control lookup table
+(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds.
The LM64 is effectively an LM63 with GPIO lines. The driver does not
support these GPIO lines at present.