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spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id ED55E1800; Wed, 2 Sep 2020 05:04:51 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz ED55E1800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1599015936; bh=/dy4tdvCGnmLLYHQLy4G0MUhTDmnkguIgY/xz1iAeVA=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=WQ530vINMFsblUMQ1mSygKXzEjAB2oPfb3IspnsDB6yNFEj+RZscyRTmj/3GX79U7 hi79vvq6Oo14/ihMGYoOJS4CnA35tNBbxY1O3pZtPGfyrIHowZ+gkkw+C/lVPxYzii TBaEDKITAAGGJ+8YoTsFc7R6lIhY69U9hH5CN4qo= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id E9C4DF80322; Wed, 2 Sep 2020 05:00:36 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 99B75F80276; 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01 Sep 2020 20:00:03 -0700 IronPort-SDR: GREZdfE6O4YCP5rqbgSo15xy0SFNXBT+oegSmZVc14nhs5xx+NvL9DvqEZgPp6nhd5ZgSKT/1t /aHnvi/8Fodg== X-IronPort-AV: E=Sophos;i="5.76,381,1592895600"; d="scan'208";a="283588154" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Sep 2020 19:59:59 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v2 06/10] soundwire: intel: add multi-link hw_synchronization information Date: Tue, 1 Sep 2020 23:05:52 +0800 Message-Id: <20200901150556.19432-7-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com> References: <20200901150556.19432-1-yung-chuan.liao@linux.intel.com> Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, mengdong.lin@intel.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Pierre-Louis Bossart set the flags as required by hardware implementation Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao --- drivers/soundwire/intel.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 8634d33c388c..272826973426 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -1400,7 +1400,14 @@ int intel_master_startup(struct platform_device *pdev) dev_dbg(dev, "Multi-link is disabled\n"); bus->multi_link = false; } else { + /* + * hardware-based synchronization is required regardless + * of the number of segments used by a stream: SSP-based + * synchronization is gated by gsync when the multi-master + * mode is set. + */ bus->multi_link = true; + bus->hw_sync_min_links = 1; } /* Initialize shim, controller */