linux-kernel - Re: [PATCH 3/6] ASoC: fsl_easrc: define functions for memory to memory usage

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Message-ID: <CAOMZO5DPHmm7YuHBfYHpx2-g4R6t1BQ93GBAZvyyb_rBz7+hFg@mail.gmail.com>
Date:   Thu, 29 Jun 2023 07:59:53 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
Cc:     tfiga@...omium.org, m.szyprowski@...sung.com, mchehab@...nel.org,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        shengjiu.wang@...il.com, Xiubo.Lee@...il.com,
        nicoleotsuka@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 3/6] ASoC: fsl_easrc: define functions for memory to
 memory usage

Hi Shengjiu,

On Wed, Jun 28, 2023 at 11:10 PM Shengjiu Wang <shengjiu.wang@....com> wrote:
>
> ASRC can be used on memory to memory case, define several
> functions for m2m usage and export them as function pointer.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>

Could you please explain what is the benefit of using M2M in the EASRC driver?

A few weeks ago, an imx8mn user reported that the EASRC with the
mainline kernel introduces huge delays.

Does M2M help with this aspect?

Thanks