From 3c1ecccbbc1389773c32fc56910cf23512fccfcd Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 15 Nov 2021 18:10:11 -0800 Subject: hwmon: (lm90) Add support for MAX6642 MAX6642 is a reduced version of LM90 with no low limits and no conversion rate register. Its alert functionality is broken, similar to many other chips supported by the lm90 driver. After this change, the stand-alone max6642 driver is only needed if the lm90 driver is disabled. Make it dependent on SENSORS_LM90=n to show that it is not needed if the lm90 driver is enabled. A devicetree node is not added for this chip since it is quite unlikely that such an old chip will ever be used in a devicetree based system. It can be added later if needed. Signed-off-by: Guenter Roeck --- Documentation/hwmon/lm90.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'Documentation/hwmon/lm90.rst') diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst index 45bc333a1219..313b18f6531d 100644 --- a/Documentation/hwmon/lm90.rst +++ b/Documentation/hwmon/lm90.rst @@ -113,6 +113,16 @@ Supported chips: https://www.onsemi.com/PowerSolutions/product.do?id=NCT1008 + * Maxim MAX6642 + + Prefix: 'max6642' + + Addresses scanned: I2C 0x48-0x4f + + Datasheet: Publicly available at the Maxim website + + http://datasheets.maxim-ic.com/en/ds/MAX6642.pdf + * Maxim MAX6646 Prefix: 'max6646' @@ -362,6 +372,12 @@ ADT7481, ADT7482, ADT7483: * Two remote sensors * Selectable address (ADT7483) +MAX6642: + * No critical limit register + * Conversion rate not configurable + * Better local resolution (10 bit) + * 10 bit external sensor resolution + MAX6646, MAX6647, MAX6649: * Better local resolution * Extended range unsigned external temperature -- cgit v1.2.3-59-g8ed1b