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Mon, 29 Jun 2020 16:32:27 +0000 Subject: Re: [PATCH v4 11/23] ASoC: simple-card: Loop over all children for 'mclk-fs' To: Kuninori Morimoto References: <1593233625-14961-1-git-send-email-spujar@nvidia.com> <1593233625-14961-12-git-send-email-spujar@nvidia.com> <875zba1y28.wl-kuninori.morimoto.gx@renesas.com> From: Sameer Pujar Message-ID: <58000bd3-861c-bbc2-75e1-128cf0199a76@nvidia.com> Date: Mon, 29 Jun 2020 22:02:24 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <875zba1y28.wl-kuninori.morimoto.gx@renesas.com> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) 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=1593448257; bh=eCgPnGs+t6mTlUrWspHqn3L6WbSBOIjW+yMMr1FqO98=; 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=E0bgnTS+65jRjYEbGCuLpuR8gnCRlXvUMWJ2XzgjkKSHqUAwlVCdS3CdarJxGka2x rZypFMDFhq/5cquU2SjBDGBdPh2TqT7kW8VSprjIMw8ygVZwG25ubKqG/zx28oIpGp 348TCN+unvZvTVBjQOq5FQVNc64tKcaZ6NEWgYtPNLRs9KI+9QASfgOwbEjPNkLVSJ oGIonuFPpJ707Pn1RIsg3J0E6d6y46o1olkiB3HI4dA1r3VED4YwLcUFVsjhcYkGl6 rut7emaQHbqsyf7lbuhlsTX1riPozhD/6r8hqdRq8cSZjZEcbt8Svte7nsuTbV8OFl mPk5sQEZYA+hA== Cc: jonathanh@nvidia.com, nicoleotsuka@gmail.com, alsa-devel@alsa-project.org, atalambedu@nvidia.com, swarren@nvidia.com, linux-kernel@vger.kernel.org, spujar@nvidia.com, nwartikar@nvidia.com, lgirdwood@gmail.com, robh+dt@kernel.org, tiwai@suse.com, viswanathl@nvidia.com, sharadg@nvidia.com, broonie@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" On 6/29/2020 6:35 AM, Kuninori Morimoto wrote: > External email: Use caution opening links or attachments > > > Hi Sameer > >> CPU/Codec in DPCM DAI links are connected as CPU<->Dummy and Dummy<->Codec. >> Though mostly CPU won't use/require 'mclk-fs' property, looping over >> 'np' (current child node in a DAI link) can help in cases where multiple >> Codecs are defined. This further helps to get rid of 'codec' argument >> from simple_dai_link_of_dpcm() function, which gets called for DPCM links. >> >> Signed-off-by: Sameer Pujar >> --- > (snip) >> diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c >> index 39cdc71..02d6295 100644 >> --- a/sound/soc/generic/simple-card.c >> +++ b/sound/soc/generic/simple-card.c >> @@ -107,7 +107,9 @@ static void simple_parse_mclk_fs(struct device_node *top, >> snprintf(prop, sizeof(prop), "%smclk-fs", prefix); >> of_property_read_u32(node, prop, &props->mclk_fs); >> of_property_read_u32(cpu, prop, &props->mclk_fs); >> - of_property_read_u32(codec, prop, &props->mclk_fs); >> + >> + if (cpu != codec) >> + of_property_read_u32(codec, prop, &props->mclk_fs); > Maybe we want to have "cpu" in simple_dai_link_of_dpcm() side > without using magical code in simple_parse_mclk_fs() side ? Are you suggesting if we should simplify simple_parse_mclk_fs() by either passing 'cpu' or 'codec'? > > Thank you for your help !! > > Best regards > --- > Kuninori Morimoto