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2 Commits

Author SHA1 Message Date
Guenter Roeck
b94ca77eea hwmon: (pmbus) Introduce PMBUS symbol namespace 
Exported pmbus symbols are only supposed to be used from PMBus code.
Introduce PMBUS symbol namespace to prevent misuse from other code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2021-04-20 06:50:14 -07:00
Erik Rosen
1e4063329f hwmon: (pmbus) Add pmbus driver for MAX15301 
Add pmbus driver support for Maxim MAX15301 InTune Automatically
Compensated Digital PoL Controller with Driver and PMBus Telemetry

Even though the specification does not specifically mention it,
extensive empirical testing has revealed that auto-detection of
limit-registers will fail in a random fashion unless the delay
parameter is set to above about 80us. The default delay is set
to 100us to include some safety margin.

This patch is tested on a Flex BMR461 converter module.

Signed-off-by: Erik Rosen <erik.rosen@metormote.com>
Link: https://lore.kernel.org/r/20210419101251.24840-1-erik.rosen@metormote.com
[groeck: Added rationale for delay to driver header]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2021-04-20 06:50:14 -07:00