lkml.org 
[lkml]   [2023]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/2] dt-bindings: iio: ad74413r: allow setting sink current for digital input
Date
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 <linux@rasmusvillemoes.dk>
---
.../devicetree/bindings/iio/addac/adi,ad74413r.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
index 9eb3ecc8bbc8..fcae300182f7 100644
--- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
+++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
@@ -101,6 +101,16 @@ patternProperties:
When not configured as a comparator, the GPO will be treated as an
output-only GPIO.

+ drive-strength-microamp:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ For channels configured as digital input, this configures the sink
+ current.
+ minimum: 0
+ maximum: 1800
+ default: 0
+ multipleOf: 120
+
required:
- reg

--
2.37.2
\
 
 \ /
  Last update: 2023-03-27 00:41    [W:0.133 / U:0.292 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site