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charset="utf-8" Add a string property to assign ASoC platform driver name. It also represents the rpmsg channel this sound card sits on. 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 | 34 +++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Docum= entation/devicetree/bindings/sound/fsl,rpmsg.yaml index d370c98a62c7..35e3cb9f768b 100644 --- a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml @@ -11,8 +11,11 @@ maintainers: =20 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. =20 properties: compatible: @@ -85,6 +88,14 @@ properties: This is a boolean property. If present, the receiving function will be enabled. =20 + fsl,platform: + $ref: /schemas/types.yaml#/definitions/string + description: | + A string property to assign ASoC platform driver name. It also + represents the rpmsg channel this sound card sits on. This property + can be omitted if there is only one sound card and it sits on + "rpmsg-audio-channel". + required: - compatible - model @@ -107,3 +118,22 @@ examples: <&clk IMX8MN_AUDIO_PLL2_OUT>; clock-names =3D "ipg", "mclk", "dma", "pll8k", "pll11k"; }; + + - | + #include + + rpmsg_micfil: rpmsg_micfil { + compatible =3D "fsl,imx8mm-rpmsg-audio"; + model =3D "micfil-audio"; + fsl,platform =3D "rpmsg-micfil-channel"; + fsl,enable-lpa; + fsl,rpmsg-in; + clocks =3D <&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 =3D "ipg", "mclk", "dma", "pll8k", "pll11k"; + }; + +... --=20 2.25.1 From nobody Tue Apr 7 10:40:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3ED8ECAAD2 for ; Mon, 29 Aug 2022 07:56:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229848AbiH2H4g (ORCPT ); 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charset="utf-8" Rpmsg channel for MICFIL can also be created through rpmsg name service announcement. If this driver is probed, Cortex-A can access MICFIL which is actually controlled by Cortex-M through rpmsg channel for MICFIL. Signed-off-by: Chancel Liu --- sound/soc/fsl/imx-audio-rpmsg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/fsl/imx-audio-rpmsg.c b/sound/soc/fsl/imx-audio-rpms= g.c index 905c3a071300..d5234ac4b09b 100644 --- a/sound/soc/fsl/imx-audio-rpmsg.c +++ b/sound/soc/fsl/imx-audio-rpmsg.c @@ -88,7 +88,7 @@ static int imx_audio_rpmsg_probe(struct rpmsg_device *rpd= ev) /* Register platform driver for rpmsg routine */ data->rpmsg_pdev =3D platform_device_register_data(&rpdev->dev, IMX_PCM_DRV_NAME, - PLATFORM_DEVID_NONE, + PLATFORM_DEVID_AUTO, NULL, 0); if (IS_ERR(data->rpmsg_pdev)) { dev_err(&rpdev->dev, "failed to register rpmsg platform.\n"); @@ -110,6 +110,7 @@ static void imx_audio_rpmsg_remove(struct rpmsg_device = *rpdev) =20 static struct rpmsg_device_id imx_audio_rpmsg_id_table[] =3D { { .name =3D "rpmsg-audio-channel" }, + { .name =3D "rpmsg-micfil-channel" }, { }, }; =20 --=20 2.25.1 From nobody Tue Apr 7 10:40:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66744ECAAD4 for ; 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charset="utf-8" This patch can register different ASoC platform drivers in reference to "fsl,platform" property of the corresponding node in dts. So sound cards based on different rpmsg channels can link to their respective platform drivers. Signed-off-by: Chancel Liu --- sound/soc/fsl/imx-pcm-rpmsg.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/sound/soc/fsl/imx-pcm-rpmsg.c b/sound/soc/fsl/imx-pcm-rpmsg.c index 35049043e532..2f310994f7ee 100644 --- a/sound/soc/fsl/imx-pcm-rpmsg.c +++ b/sound/soc/fsl/imx-pcm-rpmsg.c @@ -178,7 +178,7 @@ static int imx_rpmsg_pcm_hw_params(struct snd_soc_compo= nent *component, msg->s_msg.param.channels =3D RPMSG_CH_STEREO; break; default: - ret =3D -EINVAL; + msg->s_msg.param.channels =3D params_channels(params); break; } =20 @@ -684,7 +684,7 @@ static int imx_rpmsg_pcm_probe(struct platform_device *= pdev) info->rpdev =3D container_of(pdev->dev.parent, struct rpmsg_device, dev); info->dev =3D &pdev->dev; /* Setup work queue */ - info->rpmsg_wq =3D alloc_ordered_workqueue("rpmsg_audio", + info->rpmsg_wq =3D alloc_ordered_workqueue(info->rpdev->id.name, WQ_HIGHPRI | WQ_UNBOUND | WQ_FREEZABLE); @@ -723,11 +723,15 @@ static int imx_rpmsg_pcm_probe(struct platform_device= *pdev) if (ret) goto fail; =20 - component =3D snd_soc_lookup_component(&pdev->dev, IMX_PCM_DRV_NAME); + component =3D snd_soc_lookup_component(&pdev->dev, NULL); if (!component) { ret =3D -EINVAL; goto fail; } + + /* platform component name is used by machine driver to link with */ + component->name =3D info->rpdev->id.name; + #ifdef CONFIG_DEBUG_FS component->debugfs_prefix =3D "rpmsg"; #endif --=20 2.25.1 From nobody Tue Apr 7 10:40:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BAE57ECAAD5 for ; Mon, 29 Aug 2022 07:57:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229884AbiH2H47 (ORCPT ); Mon, 29 Aug 2022 03:56:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229846AbiH2H4g (ORCPT ); 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charset="utf-8" This patch can register different ASoC CPU DAI drivers. So sound cards based on different rpmsg channels can link to their respective CPU DAI drivers. Signed-off-by: Chancel Liu --- sound/soc/fsl/fsl_rpmsg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/fsl/fsl_rpmsg.c b/sound/soc/fsl/fsl_rpmsg.c index bf94838bdbef..fde3d5006ce0 100644 --- a/sound/soc/fsl/fsl_rpmsg.c +++ b/sound/soc/fsl/fsl_rpmsg.c @@ -235,7 +235,7 @@ static int fsl_rpmsg_probe(struct platform_device *pdev) =20 rpmsg->card_pdev =3D platform_device_register_data(&pdev->dev, "imx-audio-rpmsg", - PLATFORM_DEVID_NONE, + PLATFORM_DEVID_AUTO, NULL, 0); if (IS_ERR(rpmsg->card_pdev)) { --=20 2.25.1 From nobody Tue Apr 7 10:40:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47974ECAAD2 for ; Mon, 29 Aug 2022 07:57:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229898AbiH2H5S (ORCPT ); Mon, 29 Aug 2022 03:57:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57166 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229821AbiH2H4t (ORCPT ); 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Received: from VI1PR04MB4222.eurprd04.prod.outlook.com (2603:10a6:803:46::19) by DB7PR04MB4220.eurprd04.prod.outlook.com (2603:10a6:5:27::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5566.21; Mon, 29 Aug 2022 07:56:17 +0000 Received: from VI1PR04MB4222.eurprd04.prod.outlook.com ([fe80::3139:70b4:6648:bd32]) by VI1PR04MB4222.eurprd04.prod.outlook.com ([fe80::3139:70b4:6648:bd32%4]) with mapi id 15.20.5566.021; Mon, 29 Aug 2022 07:56:16 +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@nxp.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, linuxppc-dev@lists.ozlabs.org Cc: Chancel Liu Subject: [PATCH 5/5] ASoC: imx-rpmsg: Assign platform driver used by machine driver to link with Date: Mon, 29 Aug 2022 15:51:44 +0800 Message-Id: <20220829075144.2405000-6-chancel.liu@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220829075144.2405000-1-chancel.liu@nxp.com> References: <20220829075144.2405000-1-chancel.liu@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SI2PR06CA0012.apcprd06.prod.outlook.com (2603:1096:4:186::13) To VI1PR04MB4222.eurprd04.prod.outlook.com (2603:10a6:803:46::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3a2dbd6a-087d-45ba-e9ea-08da8993f386 X-MS-TrafficTypeDiagnostic: DB7PR04MB4220:EE_ X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="utf-8" Use "fsl,platform" property to indicate ASoC machine driver which ASoC platform driver should link with. Signed-off-by: Chancel Liu --- sound/soc/fsl/imx-rpmsg.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c index 2e117311e582..c534b638698e 100644 --- a/sound/soc/fsl/imx-rpmsg.c +++ b/sound/soc/fsl/imx-rpmsg.c @@ -36,6 +36,7 @@ static int imx_rpmsg_probe(struct platform_device *pdev) struct platform_device *rpmsg_pdev =3D to_platform_device(dev); struct device_node *np =3D rpmsg_pdev->dev.of_node; struct of_phandle_args args; + const char *platform_name; struct imx_rpmsg *data; int ret =3D 0; =20 @@ -81,7 +82,10 @@ static int imx_rpmsg_probe(struct platform_device *pdev) } =20 data->dai.cpus->dai_name =3D dev_name(&rpmsg_pdev->dev); - data->dai.platforms->name =3D IMX_PCM_DRV_NAME; + if (!of_property_read_string(np, "fsl,platform", &platform_name)) + data->dai.platforms->name =3D platform_name; + else + data->dai.platforms->name =3D "rpmsg-audio-channel"; data->dai.playback_only =3D true; data->dai.capture_only =3D true; data->card.num_links =3D 1; --=20 2.25.1