linux-kernel - [PATCH v4 10/13] dt-bindings: iio: temperature: ltc2983: describe broken mux delay property

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Message-Id: <20221103130041.2153295-11-demonsingur@gmail.com>
Date:   Thu,  3 Nov 2022 15:00:38 +0200
From:   Cosmin Tanislav <demonsingur@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Nuno Sá <nuno.sa@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Cosmin Tanislav <cosmin.tanislav@...log.com>
Subject: [PATCH v4 10/13] dt-bindings: iio: temperature: ltc2983: describe broken mux delay property

From: Cosmin Tanislav <cosmin.tanislav@...log.com>

The 'adi,mux-delay-config-us' property is broken. It was supposed to
be in us, but the value is actually written directly to the register.
Describe the fact that it is broken and how it actually works.

Signed-off-by: Cosmin Tanislav <cosmin.tanislav@...log.com>
---
 .../devicetree/bindings/iio/temperature/adi,ltc2983.yaml       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml b/Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml
index 676801b036cf..467e165e9b0b 100644
--- a/Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml
+++ b/Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml
@@ -29,6 +29,9 @@ properties:
       Extra delay prior to each conversion, in addition to the internal 1ms
       delay, for the multiplexer to switch input configurations and
       excitation values.
+
+      This property is supposed to be in microseconds, but to maintain
+      compatibility, this value will be multiplied by 100 before usage.
     maximum: 255
     default: 0
 
-- 
2.38.1