From: se.witt@gmx.net (Sebastian Witt)
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] [PATCH]: Update it87 documentation for automatic mode
Date: Sat, 04 Jun 2005 16:50:25 +0000 [thread overview]
Message-ID: <42A1BFD1.6020903@hasw.net> (raw)
Adds documentation for the automatic "Smart Guardian" mode it87 patch.
Regards,
Sebastian
-------------- next part --------------
--- linux-2.6.12-rc5-mm2_orig/Documentation/i2c/chips/it87 2005-06-04 16:27:48.000000000 +0200
+++ linux-2.6.12-rc5-mm2/Documentation/i2c/chips/it87 2005-06-04 16:41:59.000000000 +0200
@@ -91,6 +91,14 @@
startup, consult lm_sensors's /etc/sensors.conf. (2 = thermistor;
3 = thermal diode)
-The fan speed control features are limited to manual PWM mode. Automatic
-"Smart Guardian" mode control handling is not implemented. However
-if you want to go for "manual mode" just write 1 to pwmN_enable.
+There are two different fan speed control modes. For the first, manual
+PWM mode, write 1 to pwmN_enable and the PWM value to pwmN. For automatic
+"Smart Guardian" mode write 2 to pwmN_enable. The PWM start value for this
+mode goes in pwmN_start, the temperature input to use in pwmN_temp_input,
+the temperature when the fan is started in pwmN_limit_start. The fan gets
+disabled if the temperature in pwmN_limit_off is reached. Between the
+temperatures in pwmN_limit_start and pwmN_limit_full, the fan speed is
+linear increased by pwmN_step. pwmN_step ranges from 0 to 7, which means
+0,1,2,4,8,16,32 or 64 PWM increments per temperature increase.
+This means pwmN = pwmN_start + temp[pwmN_temp_input]_input * pwmN_step
+between pwmN_limit_start and pwmN_limit_full.
reply other threads:[~2005-06-04 16:50 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=42A1BFD1.6020903@hasw.net \
--to=se.witt@gmx.net \
--cc=lm-sensors@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.