[PATCH v2 0/2] hwmon: (pmbus/lm25066) Support SMBus Current Limit configuration
From: Potin Lai
Date: Sun Jun 14 2026 - 23:10:10 EST
This series adds support for configuring the current limit behavior via
software override on LM25066-compatible devices (excluding LM25056) using
the DEVICE_SETUP (0xD9) register.
When the 'ti,current-limit' property is specified in the device tree,
the driver configures the DEVICE_SETUP register's Current Limit Configuration
bit (bit 2) to activate SMBus/software override and sets the Current Limit
Setting bit (bit 4) to "low" or "high" threshold accordingly.
Since LM25056 does not support software override (bit 2 of DEVICE_SETUP is
reserved), it is explicitly excluded from this support in both the device
tree binding schema and the driver.
---
Changes in v2:
- Replaced the boolean properties ('ti,cl-smbus-high' and 'ti,cl-smbus-low')
with a single string property 'ti,current-limit' ('low' or 'high')
- Excluded lm25056 in the driver from parsing/setting the current limit property.
- Link to v1: https://patch.msgid.link/20260611-lm25066-cl-config-v1-0-02e567bf3d91@xxxxxxxxx
To: Guenter Roeck <linux@xxxxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Zev Weiss <zev@xxxxxxxxxxxxxxxxx>
Cc: linux-hwmon@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: Cosmo Chou <cosmo.chou@xxxxxxxxxxxx>
Cc: Mike Hsieh <Mike_Hsieh@xxxxxxxxxxxx>
Cc: Potin Lai <potin.lai@xxxxxxxxxxxx>
Signed-off-by: Potin Lai <potin.lai.pt@xxxxxxxxx>
---
Potin Lai (2):
dt-bindings: hwmon: pmbus: ti,lm25066: add current limit properties
hwmon: (pmbus/lm25066) add current limit configuration support
.../bindings/hwmon/pmbus/ti,lm25066.yaml | 18 +++++++++++
drivers/hwmon/pmbus/lm25066.c | 37 ++++++++++++++++++++++
2 files changed, 55 insertions(+)
---
base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
change-id: 20260611-lm25066-cl-config-f81925f7337e
Best regards,
--
Potin Lai <potin.lai.pt@xxxxxxxxx>