[PATCH] dt-bindings: iio: accel: adi,adis16201: add adis16203 compatible

[Shehryar Ahmad <shehryar.amd@gmail.com>]

The ADIS16203 has the same external interface as the already
documented ADIS16201/ADIS16209, for the properties covered by this
binding (compatible/reg, the DIO-based interrupt pin, and VDD
supply), verified by datasheets Table 5, Pin Function Descriptions,
in the respective Analog Devices datasheets. Some Auxiliary pins
differ (e.g. adis16209 marks a few pins DNC where adis16201/adis16203
use them as AUX COM), but these are not represented in this binding.
Add adis16203 to the existing enum rather than creating a separate
file.

Tested with checkpatch.pl --strict and dt_binding_check; both pass
with no warnings.

Three prior attempts to document this part are visible on the
mailing list, all as separate files, each redirected toward this
existing binding approach instead: Saalim Quadri, March 2025 [2],
and Sheng Kun Chang, April 2026 [3]. See below for Jonathan
Cameron's earlier, related attempt [1].

A richer version adding reset-gpios and a second interrupt
(interrupt-names: dio0/dio1) was proposed by Jonathan Cameron in
2023 [1]. I tested the same additions locally for all three
parts; checkpatch and dt_binding_check both pass. It is not
included here, as it hasn't been verified against any real board
dts file, and none in-tree currently reference adis16201,
adis16203, or adis16209. Can send that as a follow-up if
wanted.

Link: https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230129155602.740743-13-jic23@kernel.org/
Link: https://lore.kernel.org/all/5390c973-6a92-4de8-b00a-cd62af347ccb@kernel.org/
Link: https://lore.kernel.org/all/20260402-fair-wakeful-okapi-3c6dba@quoll/

Signed-off-by: Shehryar Ahmad <shehryar.amd@gmail.com>
---
 .../devicetree/bindings/iio/accel/adi,adis16201.yaml        | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
index b6ba7ad1..3ce5fb1b 100644
--- a/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
+++ b/Documentation/devicetree/bindings/iio/accel/adi,adis16201.yaml
@@ -4,21 +4,23 @@
 $id: http://devicetree.org/schemas/iio/accel/adi,adis16201.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: ADIS16201 Dual Axis Inclinometer and similar
+title: ADIS16201 Inclinometer and similar
 
 maintainers:
   - Jonathan Cameron <Jonathan.Cameron@huawei.com>
 
 description: |
-  Two similar parts from external interface point of view.
+  Three similar parts from external interface point of view.
   SPI interface.
     https://www.analog.com/en/products/adis16201.html
+    https://www.analog.com/en/products/adis16203.html
     https://www.analog.com/en/products/adis16209.html
 
 properties:
   compatible:
     enum:
       - adi,adis16201
+      - adi,adis16203
       - adi,adis16209
 
   reg:
-- 
2.43.0