On maj 25, 2022 06:57, Guenter Roeck wrote: > ADT7481, ADT7482, and ADT7483 are similar to ADT7461, but support two > external temperature sensors, similar to MAX6695/6696. They support an > extended temperature range similar to ADT7461. Registers for the second > external channel can be accessed directly or by using the same method as > used by MAX6695/6696. For simplicity, the access method implemented for > MAX6695/6696 is used. > > The chips support PEC (packet error checking). Set the PEC feature flag > and let the user decide if it should be enabled or not (it is by default > disabled). > > Even though it is only documented for ADT7483, all three chips support a > secondary manufacturer ID register at 0x3e and a chip ID register at 0x3f. > Use the contents of those registers register for improved chip detection > accuracy. Add the same check to the ADT7461A detection code since this chip > also supports the same (undocumented) registers. > > Devicetree nodes are not added for the added chips since it is quite > unlikely that such old chips will ever be used in a devicetree based > system. They can be added later if needed. > > Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> > --- > Documentation/hwmon/lm90.rst | 38 +++++++++++ > drivers/hwmon/Kconfig | 3 +- > drivers/hwmon/lm90.c | 119 ++++++++++++++++++++++++++--------- > 3 files changed, 129 insertions(+), 31 deletions(-) Reviewed-by: Slawomir Stepien <sst@xxxxxxxxx> -- Slawomir Stepien
