[PATCH 0/3] Support onsemi's FD5121 multiphase digital controller

From: Selvamani Rajagopal via B4 Relay

Date: Tue Jun 23 2026 - 01:56:44 EST


FD5121 is a dual rail, multi-phase controller designed to
power CPU, ASIC or SoC with fully configurable rails.

This driver adds support for FD5121, FD5123 and FD5125. These
controllers configurability through PMBus 1.4.1.

Added documents for these controllers.

Signed-off-by: Selvamani Rajagopal <Selvamani.Rajagopal@xxxxxxxxxx>
---
Selvamani Rajagopal (3):
Documentation/hwmon: Add onsemi's FD5121 controllers' documentation
dt-bindings: hwmon: pmbus: Support for onsemi's FD5121
hwmon: (pmbus/fd5121): Add support FD5121, FD5123 and FD5125

.../bindings/hwmon/pmbus/onnn,fd5121.yaml | 41 +
Documentation/hwmon/fd5121.rst | 93 ++
Documentation/hwmon/index.rst | 1 +
MAINTAINERS | 8 +
drivers/hwmon/pmbus/Kconfig | 9 +
drivers/hwmon/pmbus/Makefile | 1 +
drivers/hwmon/pmbus/fd5121.c | 1004 ++++++++++++++++++++
7 files changed, 1157 insertions(+)
---
base-commit: 1a3746ccbb0a97bed3c06ccde6b880013b1dddc1
change-id: 20260622-support-fd5121-from-onsemi-6fa9f98b5bf0

Best regards,
--
Selvamani Rajagopal <Selvamani.Rajagopal@xxxxxxxxxx>