[PATCH] dt-bindings: iio: adc: rockchip-saradc: Fix RV1106 compatible

[Vladislav Leonov <vlad@zlab.su>]

rockchip,rv1106-saradc was folded into the fallback enum together
with rockchip,rk3576-saradc, falling back to rockchip,rk3588-saradc.
The two IP blocks are not equivalent, though: per the RV1106 TRM v0.3,
chapter 20 (SAR-ADC), RV1106 only has 2 channels at 10-bit resolution,
versus 8 channels at 12-bit on RK3588. Documenting it as falling back
to rk3588-saradc allows device trees that would bind against the wrong
channel table and report an incorrect voltage scale.

Remove rockchip,rv1106-saradc from the RK3588 fallback enum and give
it its own standalone compatible entry, matching the dedicated match
table entry added by the driver patch.

Fixes: bdba14f6122c ("dt-bindings: iio: adc: rockchip-saradc: Add RV1106 compatible")
Link: https://lore.kernel.org/all/20260810090826.146758-1-vlad@zlab.su
Signed-off-by: Vladislav Leonov <vlad@zlab.su>
---
 .../devicetree/bindings/iio/adc/rockchip-saradc.yaml         | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
index f0551d665916..dc56855527b8 100644
--- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
@@ -22,9 +22,7 @@ properties:
       - const: rockchip,rk3562-saradc
       - const: rockchip,rk3588-saradc
       - items:
-          - enum:
-              - rockchip,rk3576-saradc
-              - rockchip,rv1106-saradc
+          - const: rockchip,rk3576-saradc
           - const: rockchip,rk3588-saradc
       - items:
           - enum:
@@ -35,6 +33,7 @@ properties:
               - rockchip,rv1108-saradc
               - rockchip,rv1126-saradc
           - const: rockchip,rk3399-saradc
+      - const: rockchip,rv1106-saradc
 
   reg:
     maxItems: 1
-- 
2.47.3