linux-kernel - Re: [PATCH v2 14/16] ASoC: SOF: Intel: hda-sdw-bpt: add CHAIN

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Message-ID: <19271ec0-11b9-4ba5-bfd1-5e5521721882@sirena.org.uk>
Date: Mon, 24 Feb 2025 14:08:23 +0000
From: Mark Brown <broonie@...nel.org>
To: Bard Liao <yung-chuan.liao@...ux.intel.com>
Cc: linux-sound@...r.kernel.org, tiwai@...e.de, vkoul@...nel.org,
	vinod.koul@...aro.org, linux-kernel@...r.kernel.org,
	pierre-louis.bossart@...ux.dev, bard.liao@...el.com
Subject: Re: [PATCH v2 14/16] ASoC: SOF: Intel: hda-sdw-bpt: add CHAIN_DMA
 support

On Mon, Feb 24, 2025 at 02:44:48PM +0800, Bard Liao wrote:
> When the firmware is involved, the data can be transferred with a
> CHAIN_DMA on LNL+.
> 
> The CHAIN_DMA needs to be programmed before the DMAs per the
> documentation. The states are not exactly symmetrical, on stop we must
> do a PAUSE and RESET.

Acked-by: Mark Brown <broonie@...nel.org>

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