linux-kernel - Re: [PATCH] ASoC: SOF: imx8: add core shutdown operation for imx8/imx8x

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Message-ID: <CAEnQRZBHF4dwTEcaz2VQE9UYCu9aVapV4fuRtTXhvBdDDkZDWg@mail.gmail.com>
Date: Mon, 16 Jun 2025 10:33:13 +0300
From: Daniel Baluta <daniel.baluta@...il.com>
To: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
Cc: Liam Girdwood <lgirdwood@...il.com>, Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>, 
	Bard Liao <yung-chuan.liao@...ux.intel.com>, 
	Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>, Daniel Baluta <daniel.baluta@....com>, 
	Mark Brown <broonie@...nel.org>, linux-sound@...r.kernel.org, imx@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: SOF: imx8: add core shutdown operation for imx8/imx8x

On Fri, Jun 13, 2025 at 10:43 PM Laurentiu Mihalcea
<laurentiumihalcea111@...il.com> wrote:
>
> From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
>
> Currently, the DSP core from i.MX8QM/i.MX8QXP is able to operate while the
> firmware image is being loaded. Because of this, the DSP may change the
> content of the firmware data just after it was loaded, thus leading to the
> data having unexpected values when the DSP is reset (via run()).
>
> Fix this by implementing the core_shutdown() operation that will put the
> DSP in stall during suspend(). The stall will be removed during the run()
> opertion, thus guaranteeing that the DSP core will not be able to run
> while the firmware image is being loaded.
>
> Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>

Reviewed-by: Daniel Baluta <daniel.baluta@....com>