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Wed, 23 Sep 2026 15:08:39 +0000 Date: Wed, 23 Sep 2026 10:08:27 -0500 From: Frank Li To: shengjiu.wang@oss.nxp.com Cc: lgirdwood@gmail.com, broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, Frank.Li@nxp.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, shawnguo@kernel.org, linux-sound@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, nicoleotsuka@gmail.com, perex@perex.cz, tiwai@suse.com, linuxppc-dev@lists.ozlabs.org, Shengjiu Wang Subject: Re: [RESEND PATCH v5 1/5] ASoC: dt-bindings: fsl,imx-asrc: update port binding to support multiple paths Message-ID: References: <20260922033428.1690822-1-shengjiu.wang@oss.nxp.com> <20260922033428.1690822-2-shengjiu.wang@oss.nxp.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260922033428.1690822-2-shengjiu.wang@oss.nxp.com> X-ClientProxiedBy: PH7P223CA0008.NAMP223.PROD.OUTLOOK.COM (2603:10b6:510:338::6) To GV2PR04MB11799.eurprd04.prod.outlook.com (2603:10a6:150:2cf::9) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: GV2PR04MB11799:EE_|MI3PR04MB12657:EE_ X-MS-Office365-Filtering-Correlation-Id: eea24b70-cd5c-4e09-6c8d-08df19848bfe X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|366016|19092799006|7416014|376014|10067099003|56012099006|3023799007|4143699003|6133799003|22082099003|18002099003|11063799006; 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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. > > Signed-off-by: Shengjiu Wang > --- Reviewed-by: Frank Li > .../bindings/sound/fsl,imx-asrc.yaml | 43 +++++++++++++++++-- > 1 file changed, 39 insertions(+), 4 deletions(-) > > diff --git a/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml b/Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml > index cd69bad107c7..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 > >