On Tue, Aug 4, 2026 at 10:39 PM Frank Li <[email protected]> wrote: > > On Tue, Aug 04, 2026 at 06:02:14PM +0800, [email protected] wrote: > > From: Shengjiu Wang <[email protected]> > > > > 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
That is to avoid any downstream use of the 'port', so not directly replace it. best regards Shengjiu Wang > > Frank > > > > > Signed-off-by: Shengjiu Wang <[email protected]> > > --- > > .../bindings/sound/fsl,imx-asrc.yaml | 45 ++++++++++++++++--- > > 1 file changed, 40 insertions(+), 5 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml > > b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml > > index 608defc93c1e..67d2826eef3f 100644 > > --- a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml > > +++ b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml > > @@ -78,9 +78,19 @@ properties: > > power-domains: > > maxItems: 1 > > > > + ports: > > + $ref: /schemas/graph.yaml#/properties/ports > > + patternProperties: > > + "^port@[0-2]$": > > + $ref: audio-graph-port.yaml# > > + unevaluatedProperties: false > > + description: port for an independent conversion path > > + > > port: > > $ref: audio-graph-port.yaml# > > unevaluatedProperties: false > > + deprecated: true > > + description: deprecated, use ports instead > > > > fsl,asrc-rate: > > $ref: /schemas/types.yaml#/definitions/uint32 > > @@ -125,6 +135,10 @@ required: > > - fsl,asrc-width > > > > allOf: > > + - not: > > + required: > > + - port > > + - ports > > - $ref: dai-common.yaml# > > - if: > > properties: > > @@ -180,11 +194,32 @@ examples: > > fsl,asrc-rate = <48000>; > > fsl,asrc-width = <16>; > > > > - port { > > - playback-only; > > + ports { > > + #address-cells = <1>; > > + #size-cells = <0>; > > + > > + port@0 { > > + reg = <0>; > > + playback-only; > > + endpoint { > > + remote-endpoint = <&fe00_ep>; > > + }; > > + }; > > + > > + port@1 { > > + reg = <1>; > > + capture-only; > > + endpoint { > > + remote-endpoint = <&fe01_ep>; > > + }; > > + }; > > > > - asrc_endpoint: endpoint { > > - remote-endpoint = <&fe00_ep>; > > + port@2 { > > + reg = <2>; > > + capture-only; > > + endpoint { > > + remote-endpoint = <&fe02_ep>; > > + }; > > }; > > - }; > > + }; > > }; > > -- > > 2.34.1 > > > >
