Re: [PATCH v2 0/2] iio: pressure: add Sensirion SDP31 driver

[Krzysztof Kozlowski <krzk@kernel.org>]

On Sun, Sep 20, 2026 at 09:47:22PM +0500, Muhammad Abu Bakar wrote:
> This series adds support for the Sensirion SDP31 differential pressure
> sensor, an I2C device that also reports temperature.
> 
> The SDP31 uses a completely different I2C command protocol from the
> already supported SDP500 (command-triggered measurements with a per-word
> CRC-8), so extending the sdp500 driver does not make sense. No compatible
> parts from other vendors were found.
> 
> Patch 1 adds the device tree binding.
> Patch 2 adds the IIO driver, which exposes differential pressure and
> temperature channels and validates each measurement using the sensor's
> CRC-8 checksum.
> 
> The driver was developed and tested on an SDP31 wired to the I2C bus of
> a Raspberry Pi 4.
> 
> Changes since v1:
> - Explain in this cover letter why a new driver is added instead of
>   extending the sdp500 driver.
> - dt-bindings: make vdd-supply required, and enable the regulator in the
>   driver using devm_regulator_get_enable().
> - Move the MAINTAINERS entry into the dt-bindings patch; the driver patch
>   only adds its own file.
> - Populate the CRC-8 table with DO_ONCE() to avoid a race between
>   concurrent probes.
> - Use devm_mutex_init() and take the lock inside sdp31_measure() using
>   guard(mutex).
> - Build the command with __be16/cpu_to_be16() and parse the reply with
>   get_unaligned_be16().
> - Use a named initializer in the i2c_device_id table.
> - Minor cleanups: local struct device *dev, single-line dev_err_probe(),
>   and a comment on the mutex.
> 
> v1: https://lore.kernel.org/linux-iio/20260919223650.13396-1-m.abubakar365@yahoo.com/

Link does not work.

Best regards,
Krzysztof