On Thu, 18 Jun 2026 14:27:19 +0100 Rodrigo Alencar via B4 Relay <[email protected]> wrote:
> From: Rodrigo Alencar <[email protected]> > > Add documentation for a read-only sysfs attribute that allows to expose > parent-child relationships between IIO channels. > > Signed-off-by: Rodrigo Alencar <[email protected]> > --- > Documentation/ABI/testing/sysfs-bus-iio | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-iio > b/Documentation/ABI/testing/sysfs-bus-iio > index d9c4e3b53f29..e0f11b39511f 100644 > --- a/Documentation/ABI/testing/sysfs-bus-iio > +++ b/Documentation/ABI/testing/sysfs-bus-iio > @@ -2154,6 +2154,23 @@ Description: > specific attributes. This is useful for userspace to be able to > better identify an individual channel. > > +What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_parent > +What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_parent > +What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_parent > +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_parent > +What: /sys/bus/iio/devices/iio:deviceX/in_currentY_parent > +What: /sys/bus/iio/devices/iio:deviceX/out_currentY_parent > +What: /sys/bus/iio/devices/iio:deviceX/in_altcurrentY_parent > +What: /sys/bus/iio/devices/iio:deviceX/out_altcurrentY_parent > +KernelVersion: 7.2 > +Contact: [email protected] > +Description: > + Read-only attribute containing the sysfs name prefix of the > parent > + channel for hierarchical channel relationships (e.g. > "out_altvoltage0"). > + The prefix uniquely identifies the parent channel and can be > used by > + userspace to organize channels in tree-like structures that > reflects > + the physical or logical relationships between them. Reading this again after a while (sorry for delay) I think this needs a motivating example to remind us what this means. > + > What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw > KernelVersion: 4.18 > Contact: [email protected] >
