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Wed, 14 Sep 2022 10:52:41 +0000 From: Chancel Liu To: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org, krzysztof.kozlowski+dt@linaro.org, shengjiu.wang@gmail.com, shengjiu.wang@nxp.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 1/7] ASoC: dt-bindings: fsl_rpmsg: Add a property to assign the rpmsg channel Date: Wed, 14 Sep 2022 18:51:39 +0800 Message-Id: <20220914105145.2543646-2-chancel.liu@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220914105145.2543646-1-chancel.liu@nxp.com> References: <20220914105145.2543646-1-chancel.liu@nxp.com> X-ClientProxiedBy: SI1PR02CA0017.apcprd02.prod.outlook.com (2603:1096:4:1f4::10) To VI1PR04MB4222.eurprd04.prod.outlook.com (2603:10a6:803:46::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: VI1PR04MB4222:EE_|PA4PR04MB7773:EE_ X-MS-Office365-Filtering-Correlation-Id: b5688576-1395-4e4c-f64f-08da963f3f2a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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It also represents the name of ASoC platform driver. This property can be omitted if there is only one sound card and it sits on "rpmsg-audio-channel". Signed-off-by: Chancel Liu --- .../devicetree/bindings/sound/fsl,rpmsg.yaml | 37 ++++++++++++++++++- 1 file changed, 35 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml index d370c98a62c7..3744ae794c00 100644 --- a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml @@ -11,8 +11,11 @@ maintainers: description: | fsl_rpmsg is a virtual audio device. Mapping to real hardware devices - are SAI, DMA controlled by Cortex M core. What we see from Linux - side is a device which provides audio service by rpmsg channel. + are SAI, MICFIL, DMA controlled by Cortex M core. What we see from + Linux side is a device which provides audio service by rpmsg channel. + We can create different sound cards which access different hardwares + such as SAI, MICFIL, .etc through building rpmsg channels between + Cortex-A and Cortex-M. properties: compatible: @@ -85,6 +88,17 @@ properties: This is a boolean property. If present, the receiving function will be enabled. + fsl,rpmsg-channel-name: + $ref: /schemas/types.yaml#/definitions/string + description: | + A string property to assign rpmsg channel this sound card sits on. + It also represents the name of ASoC platform driver. This property + can be omitted if there is only one sound card and it sits on + "rpmsg-audio-channel". + enum: + - rpmsg-audio-channel + - rpmsg-micfil-channel + required: - compatible - model @@ -107,3 +121,22 @@ examples: <&clk IMX8MN_AUDIO_PLL2_OUT>; clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k"; }; + + - | + #include + + rpmsg_micfil: audio-controller { + compatible = "fsl,imx8mm-rpmsg-audio"; + model = "micfil-audio"; + fsl,rpmsg-channel-name = "rpmsg-micfil-channel"; + fsl,enable-lpa; + fsl,rpmsg-in; + clocks = <&clk IMX8MM_CLK_PDM_IPG>, + <&clk IMX8MM_CLK_PDM_ROOT>, + <&clk IMX8MM_CLK_SDMA3_ROOT>, + <&clk IMX8MM_AUDIO_PLL1_OUT>, + <&clk IMX8MM_AUDIO_PLL2_OUT>; + clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k"; + }; + +...