Module Name: src
Committed By: rkujawa
Date: Tue Oct 15 13:45:09 UTC 2013
Modified Files:
src/share/man/man4: mcp980x.4
Log Message:
Update man page to reflect latest changes (added sysctl knobs for temperature
limit and hysteresis).
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/share/man/man4/mcp980x.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/mcp980x.4
diff -u src/share/man/man4/mcp980x.4:1.3 src/share/man/man4/mcp980x.4:1.4
--- src/share/man/man4/mcp980x.4:1.3 Tue Oct 15 11:22:58 2013
+++ src/share/man/man4/mcp980x.4 Tue Oct 15 13:45:09 2013
@@ -1,4 +1,4 @@
-.\" $NetBSD: mcp980x.4,v 1.3 2013/10/15 11:22:58 rkujawa Exp $
+.\" $NetBSD: mcp980x.4,v 1.4 2013/10/15 13:45:09 rkujawa Exp $
.\"
.\" Copyright (c) 2013 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -46,11 +46,17 @@ API.
The following
.Xr sysctl 3
variable are provided:
-.Bl -tag -width machdep.mcp980x0.res
+.Bl -tag -width machdep.mcp980x0.hysteresis
.It Va machdep.mcp980x0.res
ADC resolution (integer).
Valid values are 0-3, where 0 is 9-bit (0.5 Celsius degree) and 3 is 12-bit
(0.0625 Celsius degree) resolution.
+.It Va machdep.mcp980x0.templimit
+If the ambient temperature exceeds this limit, the chip asserts an alert line
+(integer).
+.It Va machdep.mcp980x0.hysteresis
+Hysteresis for temperature limit (integer).
+.El
.Sh SEE ALSO
.Xr envsys 4
.Sh HISTORY
@@ -68,3 +74,8 @@ driver was written by
MCP9805 chip is different and is supported by the
.Xr sdtemp 4
driver.
+.Pp
+The MCP980x chip supports hysteresis and temperature limit values with
+resolution of 0.5 Celsius degree, however the
+.Nm
+driver supports setting only integer values.
