linux-kernel - [PATCH v2 0/3] iio: amplifiers: add support for ADL8113 Low Noise Amplifier

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Message-ID: <20251108174357.3748-1-antoniu.miclaus@analog.com>
Date: Sat, 8 Nov 2025 17:43:51 +0000
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: <jic23@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH v2 0/3] iio: amplifiers: add support for ADL8113 Low Noise Amplifier

This patch series adds support for the Analog Devices ADL8113, a 10MHz to 12GHz
Low Noise Amplifier with integrated bypass switches.

The ADL8113 provides four operation modes controlled by two GPIO pins:
- Internal Amplifier (14dB gain)
- Internal Bypass (0dB gain)
- External Bypass A (0dB gain) - Signal routes from RFIN to OUT_A and from IN_A to RFOUT
- External Bypass B (0dB gain) - Signal routes from RFIN to OUT_B and from IN_B to RFOUT

The external bypass modes enable external signal processing, conditioning, or filtering
while maintaining signal integrity through dedicated signal paths.

Changes in v2:
- Enhanced documentation of external bypass A and B modes in device tree bindings,
  clarifying the signal routing paths (RFIN→OUT_A/OUT_B and IN_A/IN_B→RFOUT)
- Updated ABI documentation to provide clearer descriptions of external bypass
  modes and their signal routing behavior

Antoniu Miclaus (3):
  dt-bindings: iio: amplifiers: add adl8113
  iio: amplifiers: adl8113: add driver support
  Documentation: ABI: adl8113: add documentation

 .../testing/sysfs-bus-iio-amplifiers-adl8113  |  32 +++
 .../bindings/iio/amplifiers/adi,adl8113.yaml  |  65 ++++++
 drivers/iio/amplifiers/Kconfig                |  12 +
 drivers/iio/amplifiers/Makefile               |   1 +
 drivers/iio/amplifiers/adl8113.c              | 213 ++++++++++++++++++
 5 files changed, 323 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-amplifiers-adl8113
 create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
 create mode 100644 drivers/iio/amplifiers/adl8113.c

-- 
2.43.0