| From: |
| "Pradhan, Sanman" <sanman.pradhan-AT-hpe.com> |
| To: |
| "linux-hwmon-AT-vger.kernel.org" <linux-hwmon-AT-vger.kernel.org> |
| Subject: |
| [PATCH v2 0/2] hwmon: (pmbus/max20860a) Add driver for Analog Devices MAX20860A |
| Date: |
| Thu, 28 May 2026 17:34:31 +0000 |
| Message-ID: |
| <20260528173424.87503-1-sanman.pradhan@hpe.com> |
| Cc: |
| "linux-AT-roeck-us.net" <linux-AT-roeck-us.net>, "robh-AT-kernel.org" <robh-AT-kernel.org>, "krzk+dt-AT-kernel.org" <krzk+dt-AT-kernel.org>, "conor+dt-AT-kernel.org" <conor+dt-AT-kernel.org>, "corbet-AT-lwn.net" <corbet-AT-lwn.net>, "skhan-AT-linuxfoundation.org" <skhan-AT-linuxfoundation.org>, "devicetree-AT-vger.kernel.org" <devicetree-AT-vger.kernel.org>, "linux-doc-AT-vger.kernel.org" <linux-doc-AT-vger.kernel.org>, "linux-kernel-AT-vger.kernel.org" <linux-kernel-AT-vger.kernel.org>, "Syed, Arif" <arif.syed-AT-hpe.com>, Sanman Pradhan <psanman-AT-juniper.net> |
| Archive-link: |
| Article |
From: Sanman Pradhan <psanman@juniper.net>
Add PMBus hwmon driver and DT binding for the Analog Devices MAX20860A
step-down DC-DC switching regulator. The driver provides monitoring of
input/output voltage, output current, and temperature using linear data
format.
This is a monitoring-only driver. The device's hardware write-protection
(WRITE_PROTECT register = 0x20) is detected and respected automatically
by pmbus_core via pmbus_init_wp().
Tested on PTX platform with MAX20860A at i2c-195/0x23:
- All sensors (vin, vout, iout, temp1, temp2) read correctly
- Limit attributes correctly read-only (HW write-protect honored)
- Clean dmesg (no probe errors)
Changes since v1:
- DT binding: Added allOf regulator.yaml reference and unevaluatedProperties
- DT binding: Added "maxim,max20860a" as alternative compatible
- Driver: Added "maxim,max20860a" to of_device_id table
- Driver: Removed redundant WRITE_PROTECT write from probe (pmbus_core
handles it via pmbus_init_wp())
Syed Arif (1):
hwmon: (pmbus/max20860a) Add driver for Analog Devices MAX20860A
Sanman Pradhan (1):
dt-bindings: hwmon: pmbus: Add Analog Devices MAX20860A
.../bindings/hwmon/pmbus/adi,max20860a.yaml | 47 +++++++++++++++
Documentation/hwmon/index.rst | 1 +
Documentation/hwmon/max20860a.rst | 57 ++++++++++++++++++
MAINTAINERS | 8 +++
drivers/hwmon/pmbus/Kconfig | 9 +++
drivers/hwmon/pmbus/Makefile | 1 +
drivers/hwmon/pmbus/max20860a.c | 58 +++++++++++++++++++
7 files changed, 181 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/pmbus/adi,max20860a.yaml
create mode 100644 Documentation/hwmon/max20860a.rst
create mode 100644 drivers/hwmon/pmbus/max20860a.c
--
2.34.1
