Changeset 2601

Timestamp:

06/19/04 20:44:28 (9 years ago)

Author:

mds

Message:

update for kernel 2.6, VRM version 10.0

Files:

• lm-sensors/trunk/doc/vid (modified) (8 diffs)

lm-sensors/trunk/doc/vid

@@ -13 +13 @@
 by applications.
 
-There are generally 5 VID pins. The VID codes are defined
-by Intel in documents titled
+There are generally 5 VID pins. Recent motherboards may use 6 pins.
+The VID codes are defined by Intel in documents titled
 "VRM X.X DC-DC Converter Design Guidelines".
-(VRM = Voltage Regulator Module)
+(VRM = Voltage Regulator Module), or
+"Voltage Regulator-Down (VRD) 10.0 Design Guide".
 These documents are available at http://developer.intel.com.
 
@@ -36 +37 @@
 9.0, (9.1)              1.100 - 1.850V  0.025V          P4, AMD Socket A
 
+10.0                    0.8375 - 1.6000 0.0125V         Desktop Socket 478
+
 
 "2.4" is not an actual document version but simply a way to identify
@@ -45 +48 @@
 Starting in lm_sensors 2.6.4 the VRM version is configurable.
 To configure the sensor chip for the correct voltage range,
-you must set the "vrm" correctly either via /proc or sensors.conf.
+you must set the "vrm" correctly either via /proc, /sys,  or sensors.conf.
 
 To be compatible with previous lm_sensors versions, the vrm defaults
-to version 8.2.
+to version 8.2. Generally, for recent motherboards, this will not
+be correct. Try 9.0 first.
 
 To change the vrm version to 9.0, for example, do the following
 after the chip module (in this example, w83781d) is loaded:
 
-        echo 9.0 > /proc/sys/dev/sensors/w83781d-isa-0290/vrm
+        (kernel 2.4)
+            echo 9.0 > /proc/sys/dev/sensors/w83781d-isa-0290/vrm
+        (kernel 2.6)
+            echo 90 > /sys/bus/i2c/devices/0-0290/vrm
 
-Alternatively, add a line in /etc/sensors.conf in the w83781d section:
+Alternatively, add a line in /etc/sensors.conf in the w83781d section
+(you should put this line BEFORE any line that uses vid in a calculation):
 
         set vrm 9.0
@@ -65 +73 @@
 After this, reading the vid either by
 
-        cat /proc/sys/dev/sensors/w83781d-isa-0290/vid
+        (kernel 2.4)
+            cat /proc/sys/dev/sensors/w83781d-isa-0290/vid
+        (kernel 2.6 - divide the output by 1000)
+            cat /sys/bus/i2c/devices/0-0290/in0_ref
 
 or by
@@ -74 +85 @@
 
 
-The following values are legal vrm values:
+The following values are legal vrm values. Other values will be
+allowed but will result in using the 8.2 standard.
 
-        8.2, 8.4, 8.5, 9.0
+        2.4, 8.1-8.5, 9.0, 9.1, 10.0
 
 
@@ -82 +94 @@
 That means they can't be changed and there shouldn't be
 any problems if you experiment with the vrm values until you
-get it right.
-
+get it right. You cannot manipulate the actual processor core
+voltage through lm_sensors drivers.
 
 Not all sensor chips have VID inputs.
@@ -89 +101 @@
 
 The following chip drivers support all the VRM versions via
-/etc/sensors.conf and the vrm entry in /proc:
+/etc/sensors.conf and the vrm entry in /proc or /sys:
 
-        adm1025, w83781d, lm87
+        adm1025, adm1026, asb100, lm85, lm87,
+        vt1211, vt8231, w83627hf, w83781d
 
 
@@ -101 +114 @@
 If you have a board with one of these chips which needs advanced
 VRM support please email us.
+
+------------------
+Copyright (c) 2002-2004 Mark D. Studebaker