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Fri, 17 Jul 2020 12:55:21 +0000 Subject: Re: Re: Re: Re: [PATCH v4 12/23] ASoC: simple-card: Support DPCM DAI link with multiple Codecs To: Mark Brown References: <874kqu1x70.wl-kuninori.morimoto.gx@renesas.com> <1e0cf6d1-bf4e-8808-5390-c8a3b7c7fe7e@nvidia.com> <87mu4lz6pt.wl-kuninori.morimoto.gx@renesas.com> <1d7888c7-a8cc-e891-01aa-016e31cc9113@nvidia.com> <87ftadyrec.wl-kuninori.morimoto.gx@renesas.com> <492079e9-4518-78ba-a227-859d31594369@nvidia.com> <20200630110100.GH5272@sirena.org.uk> <81d106c0-e1c8-a79a-8caf-1f3be0d61f0c@nvidia.com> <20200630153220.GL5272@sirena.org.uk> <20200702122605.GE4483@sirena.org.uk> From: Sameer Pujar Message-ID: <6194dad2-040b-c0f2-b269-571a303bbb08@nvidia.com> Date: Fri, 17 Jul 2020 18:25:15 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200702122605.GE4483@sirena.org.uk> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL101.nvidia.com (172.20.187.10) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-GB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1594990481; bh=SusogErtypZgY+TzdZS2HFWYqEUTbBJkbKRjGIuYqvc=; h=X-PGP-Universal:CC:Subject:To:References:From:Message-ID:Date: User-Agent:MIME-Version:In-Reply-To:X-Originating-IP: X-ClientProxiedBy:Content-Type:Content-Transfer-Encoding: Content-Language; b=CVhmyGBZcGr+Ew3ideddsTJWWsTullCZJHR3/D8XmLHsiV2Jm+4xp8TaKd7EYMTGF HPDeCCX45FfXcap1FcW+RZ3dJIgpCKzLjSjaj05k/WOj2HQlQBBhVEg2xVMe+xOPIn OQAWAYffwU1bNtxD5KfBoSZE4ILYseTTMS62kK9aSM8iki+oTGPCdj1x+MaHZA+V+B 6hIOXD4L76hcGKwGiCgA5e/qpm8fiIPhGoKgnNYJbymhyKMyy3/CoN5FbzDmuidjhW hMVmKQw2wkuZjZvSAp2Vns2E+IY3rwBscDpE3q/BI87S1vc/MbvVvHBle6pUfIOPvy /s/Enp4rdzLoA== Cc: jonathanh@nvidia.com, nicoleotsuka@gmail.com, alsa-devel@alsa-project.org, atalambedu@nvidia.com, swarren@nvidia.com, Kuninori Morimoto , linux-kernel@vger.kernel.org, spujar@nvidia.com, nwartikar@nvidia.com, lgirdwood@gmail.com, tiwai@suse.com, viswanathl@nvidia.com, sharadg@nvidia.com, robh+dt@kernel.org, thierry.reding@gmail.com, linux-tegra@vger.kernel.org, digetx@gmail.com, rlokhande@nvidia.com, mkumard@nvidia.com, dramesh@nvidia.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" Hi Mark, On 7/2/2020 5:56 PM, Mark Brown wrote: > On Thu, Jul 02, 2020 at 04:06:14PM +0530, Sameer Pujar wrote: > >> For the HW I am using, there are no fixed endpoints and I am not sure if it >> is allowed to have empty endpoints in audio-graph-card. Crossbar/router >> provides the flexibility to connect the components in any required order. >> Patch [05/23] exposes required graph and MUX controls for the flexible >> configurations. Mostly, in DT, I am trying to model the component itself and >> finally router can help me specify the audio path to interconnect various >> components. Hence I was trying to understand if it is really necessary to >> represent the links using audio-graph-card. Kindly help me understand what >> more it offers. If simple-card works fine, are we allowed to use it? > The links in the graph card should be the physical links at the edge of > the devices, those must be fixed no matter what. I used graph-card and could get few things working with it. Based on the feedback so far, I am planning to split the series as suggested and send two series as below. [1] Tegra AHUB series and related DT bindings as V5. [2] Audio graph card enhancements and related DT bindings for Tegra platforms as V1. Thanks, Sameer.