From: David Lechner <dlechner@baylibre.com>
To: Marcelo Schmitt <marcelo.schmitt@analog.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, devicetree@vger.kernel.org,
linux-spi@vger.kernel.org
Cc: jic23@kernel.org, Michael.Hennerich@analog.com,
nuno.sa@analog.com, eblanc@baylibre.com, andy@kernel.org,
corbet@lwn.net, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, broonie@kernel.org,
Jonathan.Cameron@huawei.com, andriy.shevchenko@linux.intel.com,
ahaslam@baylibre.com, sergiu.cuciurean@analog.com,
marcelo.schmitt1@gmail.com
Subject: Re: [PATCH 12/15] dt-bindings: iio: adc: adi,ad4030: Add adi,dual-data-rate
Date: Sat, 30 Aug 2025 12:27:42 -0500 [thread overview]
Message-ID: <5d03a10f-5281-49a7-b578-b45d7b69209c@baylibre.com> (raw)
In-Reply-To: <e65b8b6b14c8083a48915a7bc40b7521fc246860.1756511030.git.marcelo.schmitt@analog.com>
On 8/29/25 7:44 PM, Marcelo Schmitt wrote:
> On echo and host clock modes, AD4030 and similar devices can do two data
> bit transitions per clock cycle per active lane. Document how to specify
> dual data rate (DDR) feature for AD4030 series devices in device tree.
>
I don't think this needs to be in the devicetree. Dual data rate doesn't
depend on wiring, it only depends on if the SPI controller supports it
or not. The core SPI code in Linux already has dtr_caps for SPI controllers
to indicate that they have DDR support. So an ADC driver can just check
this flag to see if the controller supports it. No devicetree flags required.
next prev parent reply other threads:[~2025-08-30 17:27 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-30 0:39 [PATCH 00/15] Add SPI offload support to AD4030 Marcelo Schmitt
2025-08-30 0:40 ` [PATCH 01/15] iio: adc: ad4030: Fix _scale for when oversampling is enabled Marcelo Schmitt
2025-08-30 5:00 ` Andy Shevchenko
2025-08-30 18:43 ` Jonathan Cameron
2025-08-30 18:48 ` David Lechner
2025-09-02 13:18 ` Marcelo Schmitt
2025-08-30 0:40 ` [PATCH 02/15] dt-bindings: iio: adc: adi,ad4030: Reference spi-peripheral-props Marcelo Schmitt
2025-08-30 0:41 ` [PATCH 03/15] Documentation: iio: ad4030: Add double PWM SPI offload doc Marcelo Schmitt
2025-08-30 16:49 ` David Lechner
2025-08-30 0:41 ` [PATCH 04/15] dt-bindings: iio: adc: adi,ad4030: Add PWM Marcelo Schmitt
2025-08-30 0:42 ` [PATCH 05/15] spi: offload: types: add offset parameter Marcelo Schmitt
2025-08-30 5:01 ` Andy Shevchenko
2025-08-30 0:42 ` [PATCH 06/15] spi: spi-offload-trigger-pwm: Use duty offset Marcelo Schmitt
2025-08-30 5:02 ` Andy Shevchenko
2025-08-30 16:41 ` David Lechner
2025-08-30 0:42 ` [PATCH 07/15] iio: adc: ad4030: Add SPI offload support Marcelo Schmitt
2025-08-30 7:36 ` Andy Shevchenko
2025-08-30 12:08 ` kernel test robot
2025-08-30 19:11 ` Jonathan Cameron
2025-08-30 20:14 ` David Lechner
2025-09-02 14:52 ` Marcelo Schmitt
2025-08-30 0:43 ` [PATCH 08/15] dt-bindings: iio: adc: adi,ad4030: Add 4-lane per channel bus width option Marcelo Schmitt
2025-08-30 17:01 ` David Lechner
2025-08-30 0:43 ` [PATCH 09/15] iio: adc: ad4030: Support multiple data lanes per channel Marcelo Schmitt
2025-08-30 7:38 ` Andy Shevchenko
2025-08-30 17:19 ` David Lechner
2025-08-30 0:43 ` [PATCH 10/15] dt-bindings: iio: adc: adi,ad4030: Add adi,clock-mode Marcelo Schmitt
2025-08-30 18:02 ` David Lechner
2025-08-30 0:44 ` [PATCH 11/15] iio: adc: ad4030: Add clock mode option parse and setup Marcelo Schmitt
2025-08-30 7:42 ` Andy Shevchenko
2025-08-30 0:44 ` [PATCH 12/15] dt-bindings: iio: adc: adi,ad4030: Add adi,dual-data-rate Marcelo Schmitt
2025-08-30 17:27 ` David Lechner [this message]
2025-08-30 0:45 ` [PATCH 13/15] iio: adc: ad4030: Enable dual data rate Marcelo Schmitt
2025-08-30 7:46 ` Andy Shevchenko
2025-08-30 17:33 ` David Lechner
2025-08-30 0:45 ` [PATCH 14/15] dt-bindings: iio: adc: adi,ad4030: Add ADAQ4216 and ADAQ4224 Marcelo Schmitt
2025-08-30 18:45 ` David Lechner
2025-08-30 0:45 ` [PATCH 15/15] iio: adc: ad4030: Add support for " Marcelo Schmitt
2025-08-30 7:57 ` Andy Shevchenko
2025-09-02 15:22 ` Marcelo Schmitt
2025-08-30 19:17 ` David Lechner
2025-09-01 11:47 ` Dan Carpenter
2025-08-30 2:48 ` [PATCH 00/15] Add SPI offload support to AD4030 Marcelo Schmitt
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