[PATCH 4/5] dt-bindings: iio: dac: adi,ad5758: Fix the 4 mA to 20 mA current range

[Arka Mondal]

adi,range-microamp gives the 4 mA to 20 mA range as <4 24000>. The
values are in microamps, so this reads as 4 uA to 24 mA. The original
text binding described <4 24000> as the "4 mA to 20 mA current range",
and the data sheet (Rev. B, Table 32) confirms range code 1010 is
4 mA to 20 mA.

Add <4000 20000> and mark <4 24000> deprecated, so existing device
trees still validate.

Fixes: 777baca07ef1 ("dt-bindings: iio: dac: Add docs for AD5758 DAC")
Signed-off-by: Arka Mondal <arka@xxxxxxxxxxxxxx>
---

Notes:
    Checked with make dt_binding_check; no relevant hardware available.

 Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
index 5121685337b5..ef0398170eb7 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
@@ -65,9 +65,13 @@ properties:
       - items:
           - const: 0
           - enum: [20000, 24000]
+      - items:
+          - const: 4000
+          - const: 20000
       - items:
           - const: 4
           - const: 24000
+        deprecated: true
       - items:
           - const: -20000
           - const: 20000
-- 
2.55.0