linux-kernel - [PATCH v2 1/4] ASoC: dt-bindings: fsl,imx-asrc: Add support for i.MX952 platform

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Message-Id: <20260130054330.3462544-2-shengjiu.wang@nxp.com>
Date: Fri, 30 Jan 2026 13:43:27 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: lgirdwood@...il.com,
	broonie@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	shengjiu.wang@...il.com,
	Xiubo.Lee@...il.com,
	nicoleotsuka@...il.com,
	perex@...ex.cz,
	tiwai@...e.com,
	linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v2 1/4] ASoC: dt-bindings: fsl,imx-asrc: Add support for i.MX952 platform

Add new compatible string 'fsl,imx952-asrc' for i.MX952 platform,
below are the differences that make this ASRC not fallback compatible
with other platforms.

1) There is a power domain on i.MX952 for the wakeupmix system where
ASRC is in. But it is enabled by default, ASRC device don't need
to enable it, so it is optional for i.MX952.
2) The clock sources of ASRC are different on i.MX952.
3) 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 DMA may copy wrong data from output fifo as the output fifo is
not ready in the beginning. So there is specially handling in the driver.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
index c9152bac7421..608defc93c1e 100644
--- a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml
@@ -25,6 +25,7 @@ properties:
           - fsl,imx53-asrc
           - fsl,imx8qm-asrc
           - fsl,imx8qxp-asrc
+          - fsl,imx952-asrc
       - items:
           - enum:
               - fsl,imx6sx-asrc
-- 
2.34.1