linux-kernel - [PATCH v4 0/2] hwmon: Add TSC1641 I2C power monitor driver

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Message-ID: <20251105201406.1210856-1-igor@reznichenko.net>
Date: Wed,  5 Nov 2025 12:14:04 -0800
From: Igor Reznichenko <igor@...nichenko.net>
To: linux@...ck-us.net,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	corbet@....net
Cc: david.hunter.linux@...il.com,
	devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org
Subject: [PATCH v4 0/2] hwmon: Add TSC1641 I2C power monitor driver

This patch series adds support for the ST Microelectronics TSC1641
I2C power monitor. The TSC1641 provides bus voltage, current, power,
and temperature measurements via the hwmon subsystem. The driver 
supports optional ALERT pin polarity configuration and exposes the
shunt resistor value and update interval via sysfs.

Tested on Raspberry Pi 3B+ with a TSC1641 evaluation board.

v3: https://lore.kernel.org/linux-hwmon/20251104003320.1120514-1-igor@reznichenko.net/

Changes in v4:
- Updated devicetree binding example
- Removed unnecessary check for !current_lsb
- Added clamping to current val
- No extra calls to validate_shunt()

Igor Reznichenko (2):
  dt-bindings: hwmon: ST TSC1641 power monitor
  hwmon: Add TSC1641 I2C power monitor driver

 .../devicetree/bindings/hwmon/st,tsc1641.yaml |  63 ++
 Documentation/hwmon/index.rst                 |   1 +
 Documentation/hwmon/tsc1641.rst               |  87 ++
 drivers/hwmon/Kconfig                         |  12 +
 drivers/hwmon/Makefile                        |   1 +
 drivers/hwmon/tsc1641.c                       | 748 ++++++++++++++++++
 6 files changed, 912 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/st,tsc1641.yaml
 create mode 100644 Documentation/hwmon/tsc1641.rst
 create mode 100644 drivers/hwmon/tsc1641.c

-- 
2.43.0