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From: Ramona Gradinariu <ramona.gradinariu@analog.com>
To: <jic23@kernel.org>, <nuno.sa@analog.com>, <robh+dt@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>,
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CC: Ramona Gradinariu <ramona.gradinariu@analog.com>
Subject: [PATCH v2 2/3] dt-bindings: adis16475: Add 'spi-cs-inactive-delay-ns'
property
Date: Mon, 23 Oct 2023 17:05:33 +0300
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|
| Series |
iio: imu: adis: Use spi cs inactive delay
|
|
Commit Message
Ramona Gradinariu
Oct. 23, 2023, 2:05 p.m. UTC
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.
Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
---
changes in v2:
- added default value
- updated description
- updated commit message
.../devicetree/bindings/iio/imu/adi,adis16475.yaml | 6 ++++++
1 file changed, 6 insertions(+)
--
2.34.1
Comments
On 23/10/2023 16:05, Ramona Gradinariu wrote: > 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. > > Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com> > --- > changes in v2: > - added default value > - updated description > - updated commit message > .../devicetree/bindings/iio/imu/adi,adis16475.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml > index c73533c54588..135ccdd5c392 100644 > --- a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml > +++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml > @@ -47,6 +47,12 @@ properties: > spi-max-frequency: > maximum: 2000000 > > + spi-cs-inactive-delay-ns: > + minimum: 16000 > + default: 16000 > + description: > + Indicates the stall time between consecutive SPI transactions. You can skip the description entirely, it is coming from spi-peripheral-props. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml index c73533c54588..135ccdd5c392 100644 --- a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml +++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml @@ -47,6 +47,12 @@ properties: spi-max-frequency: maximum: 2000000 + spi-cs-inactive-delay-ns: + minimum: 16000 + default: 16000 + description: + Indicates the stall time between consecutive SPI transactions. + interrupts: maxItems: 1