From ab8293caad03a6a0cc83c7451ecfbe31f5f257f6 Mon Sep 17 00:00:00 2001 From: Nick Xie Date: Wed, 25 Mar 2026 15:06:15 +0800 Subject: [PATCH] dt-bindings: iio: adc: amlogic,meson-saradc: add S4 compatible Add the compatible string for the SARADC (Successive Approximation Register ADC) IP block found in the Amlogic Meson S4 SoC. There are no known differences between the SARADC on S4 and the one on G12A. Therefore, it uses "amlogic,meson-g12a-saradc" as a proper specific fallback. Also add a comment indicating that "amlogic,meson-saradc" must not be used for new devices. It's a made up compatible string that does not correspond to a specific hardware generation and is not used to match any driver. For old devices we keep it as it's part of the ABI. Signed-off-by: Nick Xie Reviewed-by: Krzysztof Kozlowski Signed-off-by: Jonathan Cameron --- .../devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml index bb9825e7346d..70ab4e140e71 100644 --- a/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.yaml @@ -27,7 +27,11 @@ properties: - amlogic,meson-gxm-saradc - amlogic,meson-axg-saradc - amlogic,meson-g12a-saradc + # Usage of this generic fallback is not allowed for new devices - const: amlogic,meson-saradc + - items: + - const: amlogic,meson-s4-saradc + - const: amlogic,meson-g12a-saradc reg: maxItems: 1