linux-kernel - Re: [PATCH 09/10] iio: accel: BMA220 add event attrs

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Message-ID: <20250907141515.0b49012a@jic23-huawei>
Date: Sun, 7 Sep 2025 14:15:15 +0100
From: Jonathan Cameron <jic23@...nel.org>
To: Petre Rodan <petre.rodan@...dimension.ro>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, David Lechner
 <dlechner@...libre.com>, Nuno Sá <nuno.sa@...log.com>, Andy
 Shevchenko <andy@...nel.org>
Subject: Re: [PATCH 09/10] iio: accel: BMA220 add event attrs

On Mon,  1 Sep 2025 22:47:35 +0300
Petre Rodan <petre.rodan@...dimension.ro> wrote:

> Add event attributes not directly covered by the IIO API.

These must be accompanied by ABI documentation in
Documentation/ABI/testing/sysfs-bus-iio-...

We need to pull out of the datasheet generic descriptions of what
they are so we can consider if they make sense as general new ABI
or perhaps map to something existing.  In some cases it is more
appropriate just to set a reasonable default and not provide a
userspace ABI at all.

Key point is that custom ABI is effectively unused ABI because most
software is written against a bunch of devices and has no idea what
the new ABI is. 

Jonathan

>