Documentation/hwmon/ina238.rst

Source file repositories/reference/linux-study-clean/Documentation/hwmon/ina238.rst

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System: Linux kernel
Corpus path: Documentation/hwmon/ina238.rst
Extension: .rst
Size: 3093 bytes
Lines: 114
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

.. SPDX-License-Identifier: GPL-2.0-only

Kernel driver ina238
====================

Supported chips:

  * Texas Instruments INA228

    Prefix: 'ina228'

    Addresses: I2C 0x40 - 0x4f

    Datasheet:
	https://www.ti.com/lit/gpn/ina228

  * Texas Instruments INA237

    Prefix: 'ina237'

    Addresses: I2C 0x40 - 0x4f

    Datasheet:
	https://www.ti.com/lit/gpn/ina237

  * Texas Instruments INA238

    Prefix: 'ina238'

    Addresses: I2C 0x40 - 0x4f

    Datasheet:
	https://www.ti.com/lit/gpn/ina238

  * Texas Instruments INA700

    Datasheet:
	https://www.ti.com/product/ina700

  * Texas Instruments INA780

    Datasheet:
	https://www.ti.com/product/ina780a

  * Silergy SQ52206

    Prefix: 'SQ52206'

    Addresses: I2C 0x40 - 0x4f

Author: Nathan Rossi <nathan.rossi@digi.com>

Description
-----------

The INA238 is a current shunt, power and temperature monitor with an I2C
interface. It includes a number of programmable functions including alerts,
conversion rate, sample averaging and selectable shunt voltage accuracy.

The shunt value in micro-ohms can be set via device properties, either from
platform code or from device tree data. Please refer to
Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings if
device tree is used.

INA237 is a functionally equivalent variant of INA238 with slightly
different accuracy. INA228 is another variant of INA238 with higher ADC
resolution. This chip also reports the energy.

INA700 and INA780 are variants of the chip series with built-in shunt resistor.
They also report the energy.

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.