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authorJoshua Scott <joshua.scott@alliedtelesis.co.nz>2016-08-08 13:35:45 +1200
committerGuenter Roeck <linux@roeck-us.net>2016-09-08 21:34:16 -0700
commitaa18cc911ae2f172429d59169e95726b8e63525c (patch)
treed158a192829981a81aee9299b1895d7bf02eeb5a /Documentation/hwmon
parent30fe976fe7a8de2d29c152cdcae207231503d564 (diff)
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hwmon: (adt7470) Expose PWM frequency to sysfs
The ADT7470 supports a variety of PWM frequencies. This patch allows the frequency to be configured and viewed through the sysfs entry pwm1_freq. Signed-off-by: Joshua Scott <joshua.scott@alliedtelesis.co.nz> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/adt747017
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/hwmon/adt7470 b/Documentation/hwmon/adt7470
index 8ce4aa0a0f55..fe68e18a0c8d 100644
--- a/Documentation/hwmon/adt7470
+++ b/Documentation/hwmon/adt7470
@@ -65,6 +65,23 @@ from 0 (off) to 255 (full speed). Fan speed will be set to maximum when the
temperature sensor associated with the PWM control exceeds
pwm#_auto_point2_temp.
+The driver also allows control of the PWM frequency:
+
+* pwm1_freq
+
+The PWM frequency is rounded to the nearest one of:
+
+* 11.0 Hz
+* 14.7 Hz
+* 22.1 Hz
+* 29.4 Hz
+* 35.3 Hz
+* 44.1 Hz
+* 58.8 Hz
+* 88.2 Hz
+* 1.4 kHz
+* 22.5 kHz
+
Notes
-----