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| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-04-29 16:33:35 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2011-04-29 16:33:35 +0200 |
| commit | 5a4e5e6a701bea7d3cbeed19fa9ea45802e8fabb (patch) | |
| tree | 721d052e593c2d15fdda6d10a9e293f4f7525857 /Documentation | |
| parent | Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/air... (diff) | |
| download | linux-5a4e5e6a701bea7d3cbeed19fa9ea45802e8fabb.tar.xz linux-5a4e5e6a701bea7d3cbeed19fa9ea45802e8fabb.zip | |
hwmon: (lm90) Add support for ADT7461A and NCT1008
This patch adds support for ADT7461A and NCT1008 to the lm90 driver.
Both chips have identical functionality and report the same manufacturing ID
and device ID values.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/hwmon/lm90 | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/Documentation/hwmon/lm90 b/Documentation/hwmon/lm90 index fa475c0a48a3..aa820aca7953 100644 --- a/Documentation/hwmon/lm90 +++ b/Documentation/hwmon/lm90 @@ -32,6 +32,16 @@ Supported chips: Addresses scanned: I2C 0x4c and 0x4d Datasheet: Publicly available at the ON Semiconductor website http://www.onsemi.com/PowerSolutions/product.do?id=ADT7461 + * Analog Devices ADT7461A + Prefix: 'adt7461a' + Addresses scanned: I2C 0x4c and 0x4d + Datasheet: Publicly available at the ON Semiconductor website + http://www.onsemi.com/PowerSolutions/product.do?id=ADT7461A + * ON Semiconductor NCT1008 + Prefix: 'nct1008' + Addresses scanned: I2C 0x4c and 0x4d + Datasheet: Publicly available at the ON Semiconductor website + http://www.onsemi.com/PowerSolutions/product.do?id=NCT1008 * Maxim MAX6646 Prefix: 'max6646' Addresses scanned: I2C 0x4d @@ -149,7 +159,7 @@ ADM1032: * ALERT is triggered by open remote sensor. * SMBus PEC support for Write Byte and Receive Byte transactions. -ADT7461: +ADT7461, ADT7461A, NCT1008: * Extended temperature range (breaks compatibility) * Lower resolution for remote temperature @@ -205,11 +215,12 @@ SMBus Alert Support This driver has basic support for SMBus alert. When an alert is received, the status register is read and the faulty temperature channel is logged. -The Analog Devices chips (ADM1032 and ADT7461) do not implement the SMBus -alert protocol properly so additional care is needed: the ALERT output is -disabled when an alert is received, and is re-enabled only when the alarm -is gone. Otherwise the chip would block alerts from other chips in the bus -as long as the alarm is active. +The Analog Devices chips (ADM1032, ADT7461 and ADT7461A) and ON +Semiconductor chips (NCT1008) do not implement the SMBus alert protocol +properly so additional care is needed: the ALERT output is disabled when +an alert is received, and is re-enabled only when the alarm is gone. +Otherwise the chip would block alerts from other chips in the bus as long +as the alarm is active. PEC Support ----------- |