Re: [PATCH v2 0/9] iio: adc: rzt2h: add DMA buffer support
From: Jonathan Cameron
Date: Sun Sep 13 2026 - 17:15:54 EST
> Add DMA-based buffered capture to the Renesas RZ/T2H and RZ/N2H ADC
> driver and the necessary device-tree properties. Also add a per-channel
> sampling-frequency control.
>
> Capture uses a cyclic DMA transfer into a non-coherent buffer. The DMA
> controller has no per-descriptor scatter-gather and each transfer needs
> to be of power-of-two width, so the transfer covers the smallest
> power-of-two-aligned group of channel registers spanning the enabled
> channels, and a consumer kthread compacts each completed period down to
> the enabled channels before handing it to the IIO core.
Looks good to me. I did reply to a couple of patchs, but nothing that
requires a v3. Patches 1-7 applied to the testing branch of iio.git.
I'll send that out as togreg once 0-day has had a look.
Nice little series. Thanks!
Jonathan
--
Jonathan Cameron <jonathan.cameron@xxxxxxxxxxxxxxxx>