Re: [PATCH 2/3] ASoC: fsl_asrc: Add support for i.MX952 platform

[Shengjiu Wang <shengjiu.wang@gmail.com>]

On Thu, Jan 29, 2026 at 5:17 PM Daniel Baluta <daniel.baluta@oss.nxp.com> wrote:
>
> On 1/28/26 09:18, Shengjiu Wang wrote:
>
> Add a compatible string and clock mapping table to support ASRC on the
> i.MX952 platform.
>
> There is a limitation on i.MX952 that dma request is not cleared at the
> end of conversion with dma slave mode. Which causes sample is dropped
> from the input fifo on the second time if dma is triggered before the
> client device and EDMA may copy wrong data from output fifo as the output
> fifo is not ready in the beginning.
>
> So need to trigger asrc before dma on i.MX952, and add delay to wait
> output data is generated then start the EDMA for output, otherwise the
> m2m function has noise issues.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
>
> This patch does more than one logical change.
>
> I would split in two patches:
>
> - 1) introduce functionality to start ASRC before DMA.
>
> - 2) add imx952 support including clk_map and introduce fsl_asrc_imx952_data

Ok, will separate them.

best regards
Shengjiu Wang
>
> Thanks,
>
> Daniel.
>
>