Hi,
--------------------------------------------------
From: "Mike Campin" <lm_sensors@xxxxxxxxxxxxxxxxxxx>
Sent: Sunday, April 10, 2011 6:04 PM
To: <lm-sensors@xxxxxxxxxxxxxx>
Subject: NCT6776 global registers 0x1c=0 and 0x24=0x5c onASRock
Extreme4
Hi,
Only 2 of the 5 fans are showing up on my ASRock P67 Extreme4 motherboard.
It due to the NCT6776 global configuration register 0x1c and 0x24 values.
The fans work if I modify these registers prior to loading the w83627ehf
driver.
My question is where are these registers initialized? Should I ask ASRock
to fix the BIOS?
isadump -y -k 0x87,0x87 0x2e 0x2f
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: ff ff 00 ff ff ff ff 02 ff ff ff ff ff ff ff ff
10: ff ff ff ff ff ff ff ff ff ff f8 0e 00 00 ff ff
20: c3 33 ff 00 5c 00 00 98 00 ff 20 00 80 00 00 01
30: 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
isaset -y -f 0x2e 0x87
isaset -y -f 0x2e 0x87
isaset -y 0x2e 0x2f 0x1c 0x3
isaset -y 0x2e 0x2f 0x24 0x1c
Thanks, Mike
--
Mike Campin
lm_sensors@xxxxxxxxxxxxxxxxxxx
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ASRock designed the board, so they should setup the hardware monitoring chip
correctly. Allowing users to change the chip configuration is a really bad
idea, as many of the pins can have different functionality/electrical
spcifications depending on the config. Setting up a pin incorrectly could
blow the chip (Configuring a pin so that it's a source that's connected to
an unprotected/limited sink for example).
So ASRock should fix the BIOS.
Regards
Ian Dobson
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