[PATCH v2 0/2] Add support for MAX20830 PMBUS

Alexis Czezar Torreno
2026-04-16T08:00:19Z

This series adds support for the Analog Devices MAX20830 step-down
switching regulator with PMBus interface.

The MAX20830 provides 2.7V to 16V input, 0.4V to 5.8V output, and up
to 30A output current. It supports monitoring of input/output voltage,
output current, and temperature via PMBus.

Datasheet: https://www.analog.com/en/products/max20830.html

Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
---
Changes in v2:
- bindings:
- did not add interrupt, smbalert pin does not exist in device.
- added allof with ref to regulator.yaml
- changed additionalprop to unevaluatedprop
- device node name in example changed to regulator
- driver:
- max20830.rst: Added missing in2_alarm
- max20830.c:
- added missing quotes in MODULE_IMPORT_NS
- added comment on why i2c_smbus_read_i2c_block_data is used
- first byte of buffer used as length instead of the return value
- "unsupported device" log now does not print first byte of buffer
- Link to v1: https://lore.kernel.org/r/20260414-dev_max20830-v1-0-210d3f82c571@analog.com

---
Alexis Czezar Torreno (2):
dt-bindings: hwmon: pmbus: add max20830
hwmon: (pmbus/max20830) add driver for max20830

.../bindings/hwmon/pmbus/adi,max20830.yaml | 61 +++++++++++++++
Documentation/hwmon/index.rst | 1 +
Documentation/hwmon/max20830.rst | 49 ++++++++++++
MAINTAINERS | 9 +++
drivers/hwmon/pmbus/Kconfig | 9 +++
drivers/hwmon/pmbus/Makefile | 1 +
drivers/hwmon/pmbus/max20830.c | 86 ++++++++++++++++++++++
7 files changed, 216 insertions(+)
---
base-commit: fb447217c59a13b2fff22d94de2498c185cd9032
change-id: 20260414-dev_max20830-9460b92cf6aa

Best regards,
--
Alexis Czezar Torreno <alexisczezar.torreno@analog.com>