linux-kernel - [PATCH v4 4/8] dt-bindings: iio: adc: adi,ad4030: Add PWM

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Message-ID: <b61b5ae8af34ed104ed931bbd71a7fd45000783c.1759929814.git.marcelo.schmitt@analog.com>
Date: Wed, 8 Oct 2025 10:50:39 -0300
From: Marcelo Schmitt <marcelo.schmitt@...log.com>
To: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-pwm@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <jic23@...nel.org>, <ukleinek@...nel.org>, <michael.hennerich@...log.com>,
        <nuno.sa@...log.com>, <eblanc@...libre.com>, <dlechner@...libre.com>,
        <andy@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <corbet@....net>, <marcelo.schmitt1@...il.com>,
        Conor
 Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v4 4/8] dt-bindings: iio: adc: adi,ad4030: Add PWM

In setups designed for high speed data rate capture, a PWM is used to
generate the CNV signal that issues data captures from the ADC. Document
the use of a PWM for AD4030 and similar devices.

Reviewed-by: David Lechner <dlechner@...libre.com>
Acked-by: Conor Dooley <conor.dooley@...rochip.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
---
 Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
index a8fee4062d0e..564b6f67a96e 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
@@ -64,6 +64,10 @@ properties:
       The Reset Input (/RST). Used for asynchronous device reset.
     maxItems: 1
 
+  pwms:
+    description: PWM signal connected to the CNV pin.
+    maxItems: 1
+
   interrupts:
     description:
       The BUSY pin is used to signal that the conversions results are available
-- 
2.39.2