[PATCH v2 0/2] Add support for Texas Instruments INA4230 power monitor

[Alexey Charkov]

TI INA4230 is a 4-channel power monitor with I2C interface, similar in
operation to INA3221 (3-channel) and INA219 (single-channel) but with
a different register layout, different alerting mechanism and slightly
different support for directly reading calculated current/power/energy
values (pre-multiplied by the device itself and needing only to be scaled
by the driver depending on its selected LSB unit values).

In this initial implementation, the driver supports reading voltage,
current, power and energy values, but does not yet support alerts, which
can be added separately if needed. Also the overflows during hardware
calculations are not yet handled, nor is the support for the device's
internal 32-bit energy counter reset.

An example device tree using this binding and driver is available at [1]
(not currently upstreamed, as the device in question is in engineering
phase and not yet publicly available)

[1] https://github.com/flipperdevices/flipper-linux-kernel/blob/flipper-devel/arch/arm64/boot/dts/rockchip/rk3576-flipper-one-rev-f0b0c1.dts

Signed-off-by: Alexey Charkov <alchark@xxxxxxxxxxx>
---
Changes in v2:
- Replace u64/u64 division with do_div() (kernel test robot)
- Add an example with ti,maximum-expected-current-microamp property in
  bindings (Krzysztof Kozlowski)
- Include the newly added binding in MAINTAINERS file (Krzysztof Kozlowski)
- Use dev_err_probe() where appropriate in the driver (Krzysztof Kozlowski)
- Switch to devm_regmap_field_bulk_alloc() instead of an open-coded loop
- Add a bounds check for the calculated calibration value,
  and a corresponding error message
- Link to v1: https://lore.kernel.org/r/20260225-ina4230-v1-0-92b1de981d46@xxxxxxxxxxx

---
Alexey Charkov (2):
      dt-bindings: hwmon: Add TI INA4230 4-channel I2C power monitor
      hwmon: Add support for TI INA4230 power monitor

 .../devicetree/bindings/hwmon/ti,ina4230.yaml      |  130 +++
 MAINTAINERS                                        |    7 +
 drivers/hwmon/Kconfig                              |   11 +
 drivers/hwmon/Makefile                             |    1 +
 drivers/hwmon/ina4230.c                            | 1006 ++++++++++++++++++++
 5 files changed, 1155 insertions(+)
---
base-commit: 3ef088b0c5772a6f75634e54aa34f5fc0a2c041c
change-id: 20260219-ina4230-74a02409153d

Best regards,
-- 
Alexey Charkov <alchark@xxxxxxxxxxx>