linux-kernel - [PATCH v3 2/3] dt-bindings: adis16475: Add 'spi-cs-inactive-delay-ns' property

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Message-ID: <20231027140358.328699-3-ramona.gradinariu@analog.com>
Date:   Fri, 27 Oct 2023 17:03:57 +0300
From:   Ramona Gradinariu <ramona.gradinariu@...log.com>
To:     <jic23@...nel.org>, <nuno.sa@...log.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
CC:     Ramona Gradinariu <ramona.gradinariu@...log.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 2/3] dt-bindings: adis16475: Add 'spi-cs-inactive-delay-ns' property

The devices supported by adis16475 driver require a stall period
between SPI transactions (during which the chip select is
inactive), with a minimum value equal to 16 microseconds, thus
adding 'spi-cs-inactive-delay-ns' property, which should indicate
the stall time between consecutive SPI transactions.
The specified minimum time may not be sufficient for all
configurations.

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@...log.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
changes in v3:
 - removed description
 - updated commit message
 Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
index c73533c54588..9b7ad609f7db 100644
--- a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
@@ -47,6 +47,10 @@ properties:
   spi-max-frequency:
     maximum: 2000000

+  spi-cs-inactive-delay-ns:
+    minimum: 16000
+    default: 16000
+
   interrupts:
     maxItems: 1

--
2.34.1