From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A515C433E6 for ; Wed, 2 Sep 2020 03:00:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 801FD2087D for ; Wed, 2 Sep 2020 03:00:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727769AbgIBDAL (ORCPT ); Tue, 1 Sep 2020 23:00:11 -0400 Received: from mga06.intel.com ([134.134.136.31]:23996 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727094AbgIBDAE (ORCPT ); Tue, 1 Sep 2020 23:00:04 -0400 IronPort-SDR: Vc7SL6jAqb6/jGHK8mLUmBQvHqmZlqPuh5Y/fzIQBCaN5GTYjuHg9XU7AZowFMPbqTd/wYuxyl kfG0pbcNDAbQ== X-IronPort-AV: E=McAfee;i="6000,8403,9731"; a="218860106" X-IronPort-AV: E=Sophos;i="5.76,381,1592895600"; d="scan'208";a="218860106" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 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 Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com, srinivas.kandagatla@linaro.org, rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com, sanyog.r.kale@intel.com, mengdong.lin@intel.com, bard.liao@intel.com 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> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 */ -- 2.17.1