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-rw-r--r--Documentation/hwmon/w83627hf29
1 files changed, 27 insertions, 2 deletions
diff --git a/Documentation/hwmon/w83627hf b/Documentation/hwmon/w83627hf
index 6ee36dbafd64..44dd2bcc72bd 100644
--- a/Documentation/hwmon/w83627hf
+++ b/Documentation/hwmon/w83627hf
@@ -32,8 +32,6 @@ Authors:
32Module Parameters 32Module Parameters
33----------------- 33-----------------
34 34
35* force_addr: int
36 Initialize the ISA address of the sensors
37* force_i2c: int 35* force_i2c: int
38 Initialize the I2C address of the sensors 36 Initialize the I2C address of the sensors
39* init: int 37* init: int
@@ -70,3 +68,30 @@ doesn't help, you may just ignore the bogus VID reading with no harm done.
70For further information on this driver see the w83781d driver documentation. 68For further information on this driver see the w83781d driver documentation.
71 69
72[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid 70[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid
71
72Forcing the address
73-------------------
74
75The driver used to have a module parameter named force_addr, which could
76be used to force the base I/O address of the hardware monitoring block.
77This was meant as a workaround for mainboards with a broken BIOS. This
78module parameter is gone for technical reasons. If you need this feature,
79you can obtain the same result by using the isaset tool (part of
80lm-sensors) before loading the driver:
81
82# Enter the Super I/O config space
83isaset -y -f 0x2e 0x87
84isaset -y -f 0x2e 0x87
85
86# Select the hwmon logical device
87isaset -y 0x2e 0x2f 0x07 0x0b
88
89# Set the base I/O address (to 0x290 in this example)
90isaset -y 0x2e 0x2f 0x60 0x02
91isaset -y 0x2e 0x2f 0x61 0x90
92
93# Exit the Super-I/O config space
94isaset -y -f 0x2e 0xaa
95
96The above sequence assumes a Super-I/O config space at 0x2e/0x2f, but
970x4e/0x4f is also possible.