From 954ea91fb68b771dba6d87cfa61b68e09cc2497f Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Mon, 6 Mar 2023 10:43:00 +0100 Subject: [PATCH] dt-bindings: iio: ad74413r: allow setting sink current for digital input Depending on the actual hardware wired up to a digital input channel, it may be necessary to configure the ad74413r to sink a small current. For example, in the case of a simple mechanical switch, the charge on the external 68 nF capacitor (cf. the data sheet's Figure 34) will keep the channel as reading high even after the switch is turned off again. Signed-off-by: Rasmus Villemoes Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20230306094301.1357543-2-linux@rasmusvillemoes.dk Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml index 9eb3ecc8bbc8..590ea7936ad7 100644 --- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml +++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml @@ -101,6 +101,15 @@ patternProperties: When not configured as a comparator, the GPO will be treated as an output-only GPIO. + drive-strength-microamp: + description: | + For channels configured as digital input, this configures the sink + current. + minimum: 0 + maximum: 1800 + default: 0 + multipleOf: 120 + required: - reg -- 2.11.0