From: Sameer Pujar <spujar@nvidia.com>
To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: <spujar@nvidia.com>, <broonie@kernel.org>, <perex@perex.cz>,
<tiwai@suse.com>, <robh+dt@kernel.org>, <lgirdwood@gmail.com>,
<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
<digetx@gmail.com>, <alsa-devel@alsa-project.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<sharadg@nvidia.com>, <mkumard@nvidia.com>,
<viswanathl@nvidia.com>, <rlokhande@nvidia.com>,
<dramesh@nvidia.com>, <atalambedu@nvidia.com>,
<nwartikar@nvidia.com>, <swarren@nvidia.com>,
<nicoleotsuka@gmail.com>
Subject: Re: [PATCH v4 10/23] ASoC: simple-card: Wrong daifmt for CPU end of DPCM DAI link
Date: Tue, 30 Jun 2020 09:17:59 +0530 [thread overview]
Message-ID: <841ac69f-1c3f-2b13-17f9-6f196811ce52@nvidia.com> (raw)
In-Reply-To: <87o8p1z81b.wl-kuninori.morimoto.gx@renesas.com>
On 6/30/2020 6:26 AM, Kuninori Morimoto wrote:
> External email: Use caution opening links or attachments
>
>
> Hi Sameer
>
>> snd_soc_runtime_set_dai_fmt() {
>> ...
>>
>> if (cpu_dai->component->driver->non_legacy_dai_naming)
>> fmt = inv_dai_fmt;
>>
>> ...
>> }
>>
>> Above flips polarity for 'cpu_dai' if 'non_legacy_dai_naming' flag is set.
>>
>> 1. Hence example mentioned in the commit message does not work if my 'cpu_dai'
>> driver does not have this flag set.
> ?
> Do you want fo flip it ? or don't flip?
> It is for Codec <-> Codec connection.
For DPCM links I don't want to flip based on one Codec reference. My
goal was to make the binding work for multiple CPU/Codec link. Hence I
thought it would be better to explicitly describe the 'Master' DAI. We
can eventually get rid of 'codec' argument from simple_dai_link_of_dpcm().
>> 2. While it is true that we consider reference of 'Codec' mode for simple CPU<->
>> Codec DAI links, for DPCM this does not seem flexible. For DPCM links CPU and
>> Codec are not directly connected (CPU<->Dummy or Dummy<->Codec). Please
>> consider, for example, if the DAI link has multiple CPU/Codecs. Which 'Codec'
>> reference needs to be considered? Isn't it better if we explicitly mention which
>> DAI we want to operate as 'Master'?
> I think Lars-Peter has (had ?) plan for this SND_SOC_DAIFMT_CBx_CFx
> flag flexibility ? Yes maybe it is needed for multi CPU/Codec system.
>
> Thank you for your help !!
>
> Best regards
> ---
> Kuninori Morimoto
next prev parent reply other threads:[~2020-06-30 3:48 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-27 4:53 [PATCH v4 00/23] Add support for Tegra210 Audio Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 01/23] ASoC: dt-bindings: tegra: Add DT bindings for Tegra210 Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 02/23] ASoC: tegra: Add support for CIF programming Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 03/23] ASoC: tegra: Add Tegra210 based DMIC driver Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 04/23] ASoC: tegra: Add Tegra210 based I2S driver Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 05/23] ASoC: tegra: Add Tegra210 based AHUB driver Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 06/23] ASoC: tegra: Add Tegra186 based DSPK driver Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 07/23] ASoC: tegra: Add Tegra210 based ADMAIF driver Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 08/23] ASoC: soc-core: Fix component name_prefix parsing Sameer Pujar
2020-06-29 0:38 ` Kuninori Morimoto
2020-06-29 15:46 ` Sameer Pujar
2020-06-30 10:45 ` Mark Brown
2020-06-30 12:56 ` Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 09/23] ASoC: simple-card: Use of_node and DAI names for DAI link names Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 10/23] ASoC: simple-card: Wrong daifmt for CPU end of DPCM DAI link Sameer Pujar
2020-06-29 0:56 ` Kuninori Morimoto
[not found] ` <6e27daa5-331e-968b-4027-2e30aeb7d382@nvidia.com>
2020-06-30 0:56 ` Kuninori Morimoto
2020-06-30 3:47 ` Sameer Pujar [this message]
2020-06-30 5:07 ` Kuninori Morimoto
2020-06-27 4:53 ` [PATCH v4 11/23] ASoC: simple-card: Loop over all children for 'mclk-fs' Sameer Pujar
2020-06-29 1:05 ` Kuninori Morimoto
2020-06-29 16:32 ` Sameer Pujar
2020-06-30 2:08 ` Kuninori Morimoto
2020-06-30 4:23 ` Sameer Pujar
2020-06-30 10:55 ` Mark Brown
2020-06-30 11:56 ` Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 12/23] ASoC: simple-card: Support DPCM DAI link with multiple Codecs Sameer Pujar
2020-06-29 1:24 ` Kuninori Morimoto
2020-06-29 17:16 ` Sameer Pujar
2020-06-30 1:24 ` Kuninori Morimoto
2020-06-30 4:08 ` Sameer Pujar
2020-06-30 6:55 ` Kuninori Morimoto
2020-06-30 7:52 ` Sameer Pujar
2020-06-30 11:01 ` Mark Brown
2020-06-30 12:53 ` Sameer Pujar
2020-06-30 15:32 ` Mark Brown
2020-07-02 10:36 ` Sameer Pujar
2020-07-02 12:26 ` Mark Brown
2020-07-17 12:55 ` Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 13/23] ASoC: simple-card: DPCM DAI link direction as per DAI capability Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 14/23] ASoC: soc-core: Probe auxiliary component before others Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 15/23] ASoC: soc-core: Identify 'no_pcm' DAI links for DPCM Sameer Pujar
2020-06-29 1:38 ` Kuninori Morimoto
2020-06-29 17:19 ` Sameer Pujar
2020-06-30 6:07 ` Kuninori Morimoto
2020-06-30 8:03 ` Sameer Pujar
2020-07-02 0:52 ` Kuninori Morimoto
2020-07-02 3:48 ` Sameer Pujar
2020-07-02 8:50 ` Kuninori Morimoto
2020-07-02 9:56 ` Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 16/23] ASoC: soc-pcm: Get all BEs along DAPM path Sameer Pujar
2020-06-29 1:41 ` Kuninori Morimoto
2020-06-29 17:29 ` Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 17/23] ASoC: dt-bindings: simple-card: Add compatible for component chaining Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 18/23] ASoC: simple-card: Add support " Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 19/23] arm64: defconfig: Build AHUB component drivers Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 20/23] arm64: defconfig: Enable CONFIG_TEGRA210_ADMA Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 21/23] arm64: tegra: Add DT binding for AHUB components Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 22/23] arm64: tegra: Enable AHUB components on few Tegra platforms Sameer Pujar
2020-06-27 4:53 ` [PATCH v4 23/23] arm64: tegra: Add support for APE sound card on Jetson Nano and TX1 Sameer Pujar
2020-06-30 10:51 ` [PATCH v4 00/23] Add support for Tegra210 Audio Mark Brown
2020-06-30 11:54 ` Sameer Pujar
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