Re: [PATCH v2 08/10] iio: frequency: ad9910: support iio backend
From: Nuno Sá
Date: Fri Oct 30 2026 - 08:10:58 EST
On Thu, 22 Oct 2026 12:19:06 -0300, Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx> wrote:
> The AD9910 parallel data port allows modulation of the DDS core parameters
> at up to the PDCLK rate, which requires a high-speed data source. Add
> support for an optional IIO backend that provides such interface, with
> data streamed into the device through an output buffer.
>
> The parallel port channels get scan indexes and scan types according to
> the data destination: 14-bit amplitude, 16-bit phase, 16-bit frequency,
> or the 8-bit amplitude and phase pair for polar modulation. As only one
> destination can be active at a time, this is enforced by the available
> scan masks. On buffer enable, the destination is configured in the
> backend and the parallel data port is enabled. The sampling_frequency
> attribute of the parallel port channels controls the backend data rate.
>
> [...]
Reviewed-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
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Nuno Sá <nuno.sa@xxxxxxxxxx>