From patchwork Mon Dec 18 12:40:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elinor Montmasson X-Patchwork-Id: 13496842 Received: from mail.savoirfairelinux.com (mail.savoirfairelinux.com [208.88.110.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8E7B138751; Mon, 18 Dec 2023 12:43:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=savoirfairelinux.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=savoirfairelinux.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=savoirfairelinux.com header.i=@savoirfairelinux.com header.b="T9Tmnvru" Received: from localhost (localhost [127.0.0.1]) by mail.savoirfairelinux.com (Postfix) with ESMTP id DA0369C4175; Mon, 18 Dec 2023 07:43:21 -0500 (EST) Received: from mail.savoirfairelinux.com ([127.0.0.1]) by localhost (mail.savoirfairelinux.com [127.0.0.1]) (amavis, port 10032) with ESMTP id ethDY8EeKLA6; Mon, 18 Dec 2023 07:43:21 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mail.savoirfairelinux.com (Postfix) with ESMTP id 631589C4178; Mon, 18 Dec 2023 07:43:21 -0500 (EST) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.savoirfairelinux.com 631589C4178 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=savoirfairelinux.com; s=DFC430D2-D198-11EC-948E-34200CB392D2; t=1702903401; bh=wnU4drmFs7+PVEutyZt+DCTB9q3agXsjLpBTQyLApvY=; h=From:To:Date:Message-Id:MIME-Version; b=T9TmnvruNIl4t4Op3/Y2/W9aUZPE+HcsO+j1x8JOB52g3jC/RemmU9bw+HpMV95d8 bnclPCk9MAx8fYVxkC6OwDdCfjEs7OskD84H+bOrIeZEFnpqs9e+ncFDGIpB+Dfdc+ XmbzUyyGnPwFT4geXDErwJ2DCIYIndCoB8KCh6KO7DveHhnE7xp6T1s4TFEDNJFCE7 HHAcruJ2LSSyIlrCbtVubRWzkl7qWWslGObn8yLArclOWotY1Fjp2GEfVQsL/AWdFF JVg3m4gSyirpeVZbOT2tVvjQoKpC5yIOtEc7NJDKqTEvpZ83PNfkwr5u7X8Nfw9B2E Ba2eG9owpO9lQ== X-Virus-Scanned: amavis at mail.savoirfairelinux.com Received: from mail.savoirfairelinux.com ([127.0.0.1]) by localhost (mail.savoirfairelinux.com [127.0.0.1]) (amavis, port 10026) with ESMTP id gKx4X9ZVQ8Q4; Mon, 18 Dec 2023 07:43:21 -0500 (EST) Received: from gerard.rennes.sfl (unknown [192.168.216.3]) by mail.savoirfairelinux.com (Postfix) with ESMTPSA id 5FF919C4175; Mon, 18 Dec 2023 07:43:19 -0500 (EST) From: Elinor Montmasson To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shengjiu Wang , Xiubo Li , Fabio Estevam , Nicolin Chen , Jaroslav Kysela , Takashi Iwai Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, Elinor Montmasson , Philip-Dylan Subject: [PATCHv3 RESEND 10/10] ASoC: dt-bindings: fsl-asoc-card: add compatible for generic codec Date: Mon, 18 Dec 2023 13:40:58 +0100 Message-Id: <20231218124058.2047167-11-elinor.montmasson@savoirfairelinux.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231218124058.2047167-1-elinor.montmasson@savoirfairelinux.com> References: <20231218124058.2047167-1-elinor.montmasson@savoirfairelinux.com> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add documentation about new dts bindings following new support for compatible "fsl,imx-audio-generic". Some CPU DAI don't require a real audio codec. The new compatible "fsl,imx-audio-generic" allows using the driver with codec drivers SPDIF DIT and SPDIF DIR as dummy codecs. It also allows using not pre-configured audio codecs which don't require specific control through a codec driver. The new dts properties give the possibility to set some parameters about the CPU DAI usually set through the codec configuration. Signed-off-by: Elinor Montmasson Co-authored-by: Philip-Dylan Gleonec --- .../bindings/sound/fsl-asoc-card.txt | 28 ++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt index 4e8dbc5abfd1..f137ef2154e3 100644 --- a/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt +++ b/Documentation/devicetree/bindings/sound/fsl-asoc-card.txt @@ -17,6 +17,9 @@ Note: The card is initially designed for those sound cards who use AC'97, I2S and PCM DAI formats. However, it'll be also possible to support those non AC'97/I2S/PCM type sound cards, such as S/PDIF audio and HDMI audio, as long as the driver has been properly upgraded. + To use CPU DAIs that do not require a codec such as an S/PDIF controller, + or to use a DAI to output or capture raw I2S/TDM data, you can + use the compatible "fsl,imx-audio-generic". The compatible list for this generic sound card currently: @@ -48,6 +51,8 @@ The compatible list for this generic sound card currently: "fsl,imx-audio-nau8822" + "fsl,imx-audio-generic" + Required properties: - compatible : Contains one of entries in the compatible list. @@ -56,7 +61,11 @@ Required properties: - audio-cpu : The phandle of an CPU DAI controller - - audio-codec : The phandle of an audio codec + - audio-codec : The phandle of an audio codec. + If using the "fsl,imx-audio-generic" compatible, + give instead a pair of phandles with the + spdif_transmitter first (driver SPDIF DIT) and the + spdif_receiver second (driver SPDIF DIR). Optional properties: @@ -87,6 +96,23 @@ Optional properties: - frame-inversion : dai-link uses frame clock inversion, for details see simple-card.yaml. - bitclock-inversion : dai-link uses bit clock inversion, for details see simple-card.yaml. - mclk-id : main clock id, specific for each card configuration. + For multi-codec configurations, an array of ids can be + given, one for each codec. + +Optional, relevant only with the "fsl,imx-audio-generic" compatible: + + - cpu-slot-width : Indicates a specific TDM slot width in bits. + - cpu-slot-num : Indicates a specific number of TDM slots per frame. + + - cpu-sysclk-freq-rx : Frequency of the CPU DAI sys clock for Rx. + - cpu-sysclk-freq-tx : Frequency of the CPU DAI sys clock for Tx. + + - cpu-sysclk-dir-rx-out : Boolean property. Specifies sys clock direction + as 'out' on initialization for Rx. + If not set, default direction is 'in'. + - cpu-sysclk-dir-tx-out : Boolean property. Specifies sys clock direction + as 'out' on initialization for Tx. + If not set, default direction is 'in'. Optional unless SSI is selected as a CPU DAI: