[PATCH v3 2/3] dt-bindings: iio: dac: ltc2632: add LTC2654 compatible strings

[David Marinović]

From: David Marinovic <david.marinovic@xxxxxxxx>

Add compatible strings for the LTC2654 quad-channel DAC family.

The LTC2654 devices are 4-channel, 16-/12-bit DACs with an internal
reference and SPI interface. They use the same 24-bit SPI command
format as the LTC2632/2634/2636 family.

The 16-bit variants (LTC2654-L16 and LTC2654-H16) require new
compatible strings, as no existing compatibles support 16-bit
resolution.

The 12-bit variants (LTC2654-L12 and LTC2654-H12) are register-
compatible with LTC2634-L12 and LTC2634-H12 respectively, and can
use them as fallback compatibles.

Changes added for:
- lltc,ltc2654-l16: 16-bit, 2.5V internal reference
- lltc,ltc2654-l12: 12-bit, 2.5V internal reference (fallback to lltc,ltc2634-l12)
- lltc,ltc2654-h16: 16-bit, 4.096V internal reference
- lltc,ltc2654-h12: 12-bit, 4.096V internal reference (fallback to lltc,ltc2634-h12)

Signed-off-by: David Marinovic <david.marinovic@xxxxxxxx>
---
 .../bindings/iio/dac/lltc,ltc2632.yaml        | 57 ++++++++++++-------
 1 file changed, 35 insertions(+), 22 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml b/Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml
index 733edc7d6d17..50a9cbb44e36 100644
--- a/Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml
@@ -4,36 +4,49 @@
 $id: http://devicetree.org/schemas/iio/dac/lltc,ltc2632.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Linear Technology LTC263x 12-/10-/8-Bit Rail-to-Rail DAC
+title: Linear Technology LTC263x and LTC2654 Rail-to-Rail DAC
 
 maintainers:
   - Michael Hennerich <michael.hennerich@xxxxxxxxxx>
 
 description: |
-  Bindings for the Linear Technology LTC2632/2634/2636 DAC
-  Datasheet can be found here: https://www.analog.com/media/en/technical-documentation/data-sheets/LTC263[246].pdf
+  Bindings for the Linear Technology LTC2632/2634/2636/2654 DAC
+  Datasheet can be found here:
+    https://www.analog.com/media/en/technical-documentation/data-sheets/LTC263[246].pdf
+    https://www.analog.com/media/en/technical-documentation/data-sheets/2654f.pdf
 
 properties:
   compatible:
-    enum:
-      - lltc,ltc2632-l12
-      - lltc,ltc2632-l10
-      - lltc,ltc2632-l8
-      - lltc,ltc2632-h12
-      - lltc,ltc2632-h10
-      - lltc,ltc2632-h8
-      - lltc,ltc2634-l12
-      - lltc,ltc2634-l10
-      - lltc,ltc2634-l8
-      - lltc,ltc2634-h12
-      - lltc,ltc2634-h10
-      - lltc,ltc2634-h8
-      - lltc,ltc2636-l12
-      - lltc,ltc2636-l10
-      - lltc,ltc2636-l8
-      - lltc,ltc2636-h12
-      - lltc,ltc2636-h10
-      - lltc,ltc2636-h8
+    oneOf:
+      - enum:
+          - lltc,ltc2632-l12
+          - lltc,ltc2632-l10
+          - lltc,ltc2632-l8
+          - lltc,ltc2632-h12
+          - lltc,ltc2632-h10
+          - lltc,ltc2632-h8
+          - lltc,ltc2634-l12
+          - lltc,ltc2634-l10
+          - lltc,ltc2634-l8
+          - lltc,ltc2634-h12
+          - lltc,ltc2634-h10
+          - lltc,ltc2634-h8
+          - lltc,ltc2636-l12
+          - lltc,ltc2636-l10
+          - lltc,ltc2636-l8
+          - lltc,ltc2636-h12
+          - lltc,ltc2636-h10
+          - lltc,ltc2636-h8
+          - lltc,ltc2654-l16
+          - lltc,ltc2654-h16
+      - items:
+          - enum:
+              - lltc,ltc2654-l12
+          - const: lltc,ltc2634-l12
+      - items:
+          - enum:
+              - lltc,ltc2654-h12
+          - const: lltc,ltc2634-h12
 
   reg:
     maxItems: 1
-- 
2.50.1