Re: [PATCH v3 1/5] ASoC: dt-bindings: fsl,imx-asrc: update port binding to support multiple paths

On Mon, Aug 10, 2026 at 09:12:20AM +0200, Krzysztof Kozlowski wrote:

On Tue, Aug 04, 2026 at 09:39:07AM -0500, Frank Li wrote:

quoted

On Tue, Aug 04, 2026 at 06:02:14PM +0800, shengjiu.wang@oss.nxp.com wrote:

quoted

From: Shengjiu Wang <redacted>

The i.MX ASRC hardware supports up to three conversion pairs (A, B, C).
The existing binding exposed only a single generic audio-graph port,
which cannot represent independent conversion paths when multiple pairs
are in use simultaneously.

Add a ports container that enumerates up to three sub-ports, each
representing an independent conversion path:
  port@0 -- conversion path 0
  port@1 -- conversion path 1
  port@2 -- conversion path 2

Each sub-port references audio-graph-port.yaml as before. Hardware pairs
are allocated dynamically at stream open time; each active stream
direction (playback or capture) on a port consumes one hardware pair.

For backwards compatibility, keep the old single port property but mark
it deprecated. A schema constraint (not: required: [port, ports]) ensures
that both forms cannot be used at the same time. The binding example is
updated to show the preferred ports form.

No existing upstream DTS file for fsl,imx-asrc uses the previously
documented single 'port' node, so this change does not break any
in-tree device tree.

if no existing upstream DTS file use it, you can direct replace with ports

And what about all other users of this binding?

Kernel is that only known user. Uboot don't use this part.

Frank

Best regards,
Krzysztof