From: Jonathan Cameron <jic23@kernel.org>
To: Rodrigo Alencar via B4 Relay
<devnull+rodrigo.alencar.analog.com@kernel.org>
Cc: rodrigo.alencar@analog.com, linux-iio@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-hardening@vger.kernel.org,
Lars-Peter Clausen <lars@metafoo.de>,
Michael Hennerich <Michael.Hennerich@analog.com>,
David Lechner <dlechner@baylibre.com>,
Andy Shevchenko <andy@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: Re: [PATCH v7 03/17] iio: ABI: add parent entry for iio channels
Date: Sun, 12 Jul 2026 01:51:48 +0100 [thread overview]
Message-ID: <20260712015148.098f0bdb@jic23-huawei> (raw)
In-Reply-To: <20260707-ad9910-iio-driver-v7-3-a4ec30f63700@analog.com>
On Tue, 07 Jul 2026 15:04:24 +0100
Rodrigo Alencar via B4 Relay <devnull+rodrigo.alencar.analog.com@kernel.org> wrote:
> From: Rodrigo Alencar <rodrigo.alencar@analog.com>
>
> Add documentation for a read-only sysfs attribute that allows to expose
> parent-child relationships between IIO channels.
>
> Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
> +
> + For example, an IIO device may expose a primary output channel as
> + "out_voltage0" together with a set of profile-based or mode-based
> + subchannels used to configure or compose the output signal. These
> + subchannels may carry common attributes such as frequency, phase, etc.
> + They do not represent physical outputs, but rather logical/virtual
> + channels grouping configurations that affect the primary output.
> + Each subchannel exposes a *_parent attribute reading "out_voltage0",
> + allowing userspace to group controls under the output channel they
> + belong to rather than treating them as unrelated top-level channels.
> +
Nice. Thanks for adding that.
Jonathan
> What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
> KernelVersion: 4.18
> Contact: linux-iio@vger.kernel.org
>
next prev parent reply other threads:[~2026-07-12 0:51 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-07 14:04 [PATCH v7 00/17] AD9910 Direct Digital Synthesizer Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 01/17] iio: ABI: add attributes for altcurrent channels Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 02/17] iio: ABI: scale and offset for frequency/phase channels Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 03/17] iio: ABI: add parent entry for iio channels Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-12 0:51 ` Jonathan Cameron [this message]
2026-07-07 14:04 ` [PATCH v7 04/17] iio: add IIO_FREQUENCY channel type Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:24 ` sashiko-bot
2026-07-07 14:04 ` [PATCH v7 05/17] iio: core: support 64-bit register through debugfs Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 06/17] iio: core: create local __iio_chan_prefix_emit() for reuse Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 15:58 ` Andy Shevchenko
2026-07-07 14:04 ` [PATCH v7 07/17] iio: test: add kunit tests for channel prefix naming generation Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:53 ` sashiko-bot
2026-07-12 1:09 ` Jonathan Cameron
2026-07-13 9:52 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 08/17] iio: core: add hierarchical channel relationships Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 16:00 ` Andy Shevchenko
2026-07-07 14:04 ` [PATCH v7 09/17] dt-bindings: iio: frequency: add ad9910 Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 16:11 ` Conor Dooley
2026-07-07 16:13 ` Conor Dooley
2026-07-07 14:04 ` [PATCH v7 10/17] iio: frequency: ad9910: initial driver implementation Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 15:15 ` sashiko-bot
2026-07-08 9:04 ` Uwe Kleine-König
2026-07-07 14:04 ` [PATCH v7 11/17] iio: frequency: ad9910: add basic parallel port support Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 12/17] iio: frequency: ad9910: add digital ramp generator support Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 13/17] iio: frequency: ad9910: add RAM mode support Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 15:51 ` sashiko-bot
2026-07-07 14:04 ` [PATCH v7 14/17] iio: frequency: ad9910: add output shift keying support Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 15/17] iio: frequency: ad9910: show channel priority in debugfs Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 14:04 ` [PATCH v7 16/17] iio: ABI: add docs for ad9910 sysfs and debugfs entries Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 16:16 ` sashiko-bot
2026-07-12 1:19 ` Jonathan Cameron
2026-07-07 14:04 ` [PATCH v7 17/17] docs: iio: add documentation for ad9910 driver Rodrigo Alencar via B4 Relay
2026-07-07 14:04 ` Rodrigo Alencar
2026-07-07 16:17 ` sashiko-bot
2026-07-12 1:35 ` Jonathan Cameron
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