On 9/5/24 10:17 AM, Angelo Dureghello wrote: > From: Angelo Dureghello <adureghello@xxxxxxxxxxxx> > > Some DACs as ad3552r need a synchronous mode setting, adding > this parameter for ad3552r and for future use on other DACs, > if needed. > > Signed-off-by: Angelo Dureghello <adureghello@xxxxxxxxxxxx> > --- > Documentation/ABI/testing/sysfs-bus-iio-dac | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/Documentation/ABI/testing/sysfs-bus-iio-dac b/Documentation/ABI/testing/sysfs-bus-iio-dac > index 810eaac5533c..2f4960c79385 100644 > --- a/Documentation/ABI/testing/sysfs-bus-iio-dac > +++ b/Documentation/ABI/testing/sysfs-bus-iio-dac > @@ -59,3 +59,19 @@ Description: > multiple predefined symbols. Each symbol corresponds to a different > output, denoted as out_voltageY_rawN, where N is the integer value > of the symbol. Writing an integer value N will select out_voltageY_rawN. > + > +What: /sys/bus/iio/devices/iio:deviceX/out_voltage_synchronous_mode > +KernelVersion: 6.13 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + Arm or disarm a wait-for-synchronization flag. Arming this flag > + means the DAC will wait for a synchronizatiopn signal on a > + specific internal or external wired connection. I.e., there are > + cases where multiple DACs IP are built in the same chip or fpga > + design, and they need to start the data stream synchronized. > + > +What: /sys/bus/iio/devices/iio:deviceX/out_voltage_synchronous_mode_available > +KernelVersion: 6.13 > +Contact: linux-iio@xxxxxxxxxxxxxxx > +Description: > + List of available values for synchronous_mode. > Since this depends on how things are wired, it seems like this should be something specified in the devicetree, not through sysfs attributes.
