The AD3531/AD3531R has different powerdown output impedance modes from
the AD3530/AD3530R. The driver currently uses the AD3530R modes (1k,
7.7k, 32k) for all variants, which is incorrect for the AD3531/AD3531R
which has 500 Ohm, 3.85 kOhm, and 16 kOhm modes per the datasheet.

This series adds the missing ABI entries for the new powerdown modes
and fixes the driver to use the correct mode strings for AD3531/AD3531R
chip variants.

Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
---
Kim Seer Paller (2):
      iio: ABI: Add DAC 500ohm, 3.85kohm, and 16kohm powerdown modes
      iio: dac: ad3530r: Fix AD3531/AD3531R powerdown mode strings

 Documentation/ABI/testing/sysfs-bus-iio |  3 ++
 drivers/iio/dac/ad3530r.c               | 54 ++++++++++++++++++++++++---------
 2 files changed, 43 insertions(+), 14 deletions(-)
---
base-commit: 39b80c5c9830d12d2d6531059001301c4265322a
change-id: 20260505-dev-ad3531r-2a3091fc7c12

Best regards,
--  
Kim Seer Paller <kimseer.paller@analog.com>