From d8521f82dfb67442777a3f7ec2fdc1237384195e Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 13 Dec 2021 11:26:54 -0800 Subject: hwmon: (lm90) Add support for ON Semiconductor NCT218 NCT218 is compatible to NCT72 and NCT214. It also supports PEC (packet error checking). Similar to NCT72 and NCT214, PEC support is undocumented. Unlike NCT214 and NCT72, NCT218 does not support the undocumented secondary chip and manufacturer ID registers at 0x3e and 0x3f and returns 0x00 when reading those registers. The value for the chip revision register is not documented but was observed to be 0xca. Use that information to improve chip detection accuracy. Signed-off-by: Guenter Roeck --- Documentation/hwmon/lm90.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/hwmon/lm90.rst') diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst index 91947825e734..ef8b55c17118 100644 --- a/Documentation/hwmon/lm90.rst +++ b/Documentation/hwmon/lm90.rst @@ -157,6 +157,16 @@ Supported chips: https://www.onsemi.com/PowerSolutions/product.do?id=NCT214 + * ON Semiconductor NCT218 + + Prefix: 'nct218' + + Addresses scanned: I2C 0x4c - 0x4d + + Datasheet: Publicly available at the ON Semiconductor website + + https://www.onsemi.com/PowerSolutions/product.do?id=NCT218 + * ON Semiconductor NCT72 Prefix: 'nct72' -- cgit v1.2.3-59-g8ed1b