hwmon: (lm90) Add support for ON Semiconductor NCT214 and NCT72
authorGuenter Roeck <linux@roeck-us.net>
Fri, 3 Dec 2021 05:58:25 +0000 (21:58 -0800)
committerGuenter Roeck <linux@roeck-us.net>
Wed, 13 Jul 2022 15:38:18 +0000 (08:38 -0700)
commit2c6cb6c557858672cafb6a5dc89a1df993420831
treefb29126c30214bc856c88fdd494e08234501259c
parentaf4540b112c48ac523f964f5014b48291490ac18
hwmon: (lm90) Add support for ON Semiconductor NCT214 and NCT72

NCT214 and NCT72 are compatible to ADT7461/ADT7461A but have full
PEC (packet error checking) support. PEC support is undocumented.

Both chips support the undocumented secondary chip and manufacturer
ID registers at 0x3e and 0x3f, and return 0x61 as chip ID. Use this
information to improve the accuracy of chip detection code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Documentation/hwmon/lm90.rst
drivers/hwmon/Kconfig
drivers/hwmon/lm90.c