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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Rob Herring <robh+dt@kernel.org>, Jonathan Cameron <jic23@kernel.org>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	David Jander <david@protonic.nl>,
	Robin van der Gracht <robin@protonic.nl>,
	linux-iio@vger.kernel.org, Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>
Subject: [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties
Date: Wed, 28 Apr 2021 09:32:06 +0200	[thread overview]
Message-ID: <20210428073208.19570-2-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20210428073208.19570-1-o.rempel@pengutronix.de>

Settling time and over sampling is a typical challenge for different IIO ADC
devices. So, introduce channel specific settling-time-us and oversampling-ratio
properties to cover this use case.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 Documentation/devicetree/bindings/iio/adc/adc.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml
index 912a7635edc4..db348fcbb52c 100644
--- a/Documentation/devicetree/bindings/iio/adc/adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml
@@ -39,4 +39,16 @@ properties:
       The first value specifies the positive input pin, the second
       specifies the negative input pin.
 
+  settling-time-us:
+    description:
+      Time between enabling the channel and first stable readings.
+
+  oversampling-ratio:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Oversampling is used as replacement of or addition to the low-pass filter.
+      In some cases, the desired filtering characteristics are a function the
+      device design and can interact with other characteristics such as
+      settling time.
+
 additionalProperties: true
-- 
2.29.2


  reply	other threads:[~2021-04-28  7:32 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-28  7:32 [PATCH v6 0/3] mainline ti tsc2046 adc driver Oleksij Rempel
2021-04-28  7:32 ` Oleksij Rempel [this message]
2021-04-28 16:59   ` [PATCH v6 1/3] dt-bindings:iio:adc: add generic settling-time-us and oversampling-ratio channel properties Jonathan Cameron
2021-04-29  4:26     ` Oleksij Rempel
2021-04-30 20:11   ` Rob Herring
2021-04-28  7:32 ` [PATCH v6 2/3] dt-bindings:iio:adc: add documentation for TI TSC2046 controller Oleksij Rempel
2021-04-28  7:32 ` [PATCH v6 3/3] iio: adc: add ADC driver for the " Oleksij Rempel
2021-04-28 16:56   ` Jonathan Cameron
2021-05-03 11:28 ` [PATCH v6 0/3] mainline ti tsc2046 adc driver Jonathan Cameron
2021-05-14  7:57   ` Oleksij Rempel
2021-05-14  8:15     ` Jonathan Cameron

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