From patchwork Fri Mar 15 11:27:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastien Curutchet X-Patchwork-Id: 13593317 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (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 3504F1B597; Fri, 15 Mar 2024 11:27:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.196 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710502081; cv=none; b=D5eqODBrUl41vwO8I7MCu+qBRIUYkv2sdjYZhAuk12S5CWM48wwVAysg3bMHImhE2tW5JVQGBx6dLZBW2ObBHz53boiKiKeB+dlgit6VhKMsE6ckeACM9KKkq7CcvWguNIqfkqu5ZMWfwfHEx7iDSSYqVsszJU1AyzNjE/ROshg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710502081; c=relaxed/simple; bh=Vqa6QA158MoJJhfEt2Iy0wh9/kNKE3uYlMHDc5V99h4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xrfc8FMFW4y+nPtC5I7UnWuXarkJCMddFIWQNYdJ6KylqMbMnsBRg2S3stLDfZumoddnt6kISh4hHsMWEMWrxAt1reh7kDm/6eg8k4TepUflNDUPggiscXCw3xYrR3dvqi3Oouh28EpLU9eFPxGSKN/k5TaVPKxIThzKOCWGwnQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=Ohc8rMAZ; arc=none smtp.client-ip=217.70.183.196 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="Ohc8rMAZ" Received: by mail.gandi.net (Postfix) with ESMTPA id B465DE0005; Fri, 15 Mar 2024 11:27:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1710502077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=R6wAImaMrQQgDt9yLO+ckEgLXUzk4/YE6uy/Vm+UgWI=; b=Ohc8rMAZZQx0N2dF+PKKTV4O9wDsMc5dVw6E/m4mHYRavO52U//ZROTrJgthdMmQqkJKQZ 4YTOOU1vpC8MGeWcaFJmfQIfoiZrBvrsYPFA2ZJ6D5PsIuVPDZ85dKj0KR8tI2ZtpCh4vv 5IW2+I4vm30iSb1BZDnRu6boyg2It16Ebims7bIzVmx9uW60OohG3Wad2WEn99v5cpKNR4 ePZkxJlQomAPo4tckYT8XnDBRir76ecEKH9m3Lli6ivMlVGcYWIgB1JIFC2BGjp9tkFNHj kjrZHgd3IPs51zP3/tFI5lbTx1RZ1JyZ4NHzG0c9Ht/g++MAnlE07DbYYRYazA== From: Bastien Curutchet To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Peter Ujfalusi , Jaroslav Kysela , Takashi Iwai , Bastien Curutchet Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, Thomas Petazzoni , herve.codina@bootlin.com, christophercordahi@nanometrics.ca Subject: [PATCH 02/13] ASoC: dt-bindings: davinci-mcbsp: Add new properties Date: Fri, 15 Mar 2024 12:27:34 +0100 Message-ID: <20240315112745.63230-3-bastien.curutchet@bootlin.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240315112745.63230-1-bastien.curutchet@bootlin.com> References: <20240315112745.63230-1-bastien.curutchet@bootlin.com> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-GND-Sasl: bastien.curutchet@bootlin.com Following features are not described in the bindings: - The McBSP uses an internal sample rate generator to provide bit clock or frame clock. This sample rate generator can be programmed to be driven by McBSP's internal clock source or by an external clock source (located on CLKS pin). - McBSP can be configured in 'free-running' mode so that its serial clocks will continue to run during emulation halt. - McBSP can generate a SYNCERR when unexpected frame pulses are detected Add an optional clock item that allows to select an external clock as sample rate generator's input. Add a 'ti,disable-free-run' flag to disable the free-running mode. This mode is selected by default by the driver that's why I add a disabling flag instead of an enabling one. Add a 'ti,enable-sync-err' flag to enable SYNCERR generation when unexpected frame pulses are detected. Signed-off-by: Bastien Curutchet Reviewed-by: Rob Herring --- .../devicetree/bindings/sound/davinci-mcbsp.yaml | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml index 8b0e9b5da08f..d8d4e7ea6e02 100644 --- a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml +++ b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml @@ -50,12 +50,16 @@ properties: - const: tx clocks: + minItems: 1 items: - description: functional clock + - description: external input clock for sample rate generator. clock-names: + minItems: 1 items: - const: fck + - const: clks power-domains: description: phandle to the corresponding power-domain @@ -64,6 +68,18 @@ properties: "#sound-dai-cells": const: 0 + ti,disable-free-run: + $ref: /schemas/types.yaml#/definitions/flag + description: + Disable free-running mode. If not present, serial clocks continue to run + during emulation halt. + + ti,enable-sync-err: + $ref: /schemas/types.yaml#/definitions/flag + description: + Enable synchronisation error detections when an unexpected frame pulse is + received. If not present, unexpected frame pulses are ignored. + required: - "#sound-dai-cells" - compatible