All of lore.kernel.org
 help / color / mirror / Atom feed
From: Michael Walle <michael@walle.cc>
To: Mark Brown <broonie@kernel.org>
Cc: Sameer Pujar <spujar@nvidia.com>,
	alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
	jonathanh@nvidia.com, kuninori.morimoto.gx@renesas.com,
	linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
	robh@kernel.org, sharadg@nvidia.com, thierry.reding@gmail.com
Subject: Re: [PATCH 1/3] ASoC: simple-card-utils: Fix device module clock
Date: Fri, 12 Mar 2021 13:30:02 +0100	[thread overview]
Message-ID: <684332700f8be9f77348a510eb6eba22@walle.cc> (raw)
In-Reply-To: <20210312120456.GD5348@sirena.org.uk>

Am 2021-03-12 13:04, schrieb Mark Brown:
> On Fri, Mar 12, 2021 at 01:01:41PM +0100, Michael Walle wrote:
>> Am 2021-03-12 12:35, schrieb Mark Brown:
> 
>> > If the card has a clock API clock as sysclk then set_sysclk(() should
>> > be configuring that clock.
> 
>> What do you mean by "the card". The simple-audio-card itself?
> 
>> Take a look at:
>> https://elixir.bootlin.com/linux/v5.12-rc2/source/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var3-ads2.dts#L29
> 
>> Does the card has a clock? IMHO the WM8904 codec has a clock, but not
>> the audio card.
> 
> The clock on the CODEC, which the card configures.  The CODEC should be
> passing on the configuration to the clock API.

Sorry, I don't understand.

The card calls set_sysclk(), which eventually ends up in the codec.
The codec therefore, could figure out if it needs to configure the
clock or if it can use its internal FLL.
Is that what you mean?

But the set_sysclk() of the codec isn't even called, because the
card itself already tries to call clk_set_rate() on the Codec's MCLK,
which returns with an error [0].

[0] 
https://elixir.bootlin.com/linux/v5.12-rc2/source/sound/soc/generic/simple-card-utils.c#L265

-michael

WARNING: multiple messages have this Message-ID (diff)
From: Michael Walle <michael@walle.cc>
To: Mark Brown <broonie@kernel.org>
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
	kuninori.morimoto.gx@renesas.com, robh@kernel.org,
	Sameer Pujar <spujar@nvidia.com>,
	linux-kernel@vger.kernel.org, jonathanh@nvidia.com,
	sharadg@nvidia.com, thierry.reding@gmail.com,
	linux-tegra@vger.kernel.org
Subject: Re: [PATCH 1/3] ASoC: simple-card-utils: Fix device module clock
Date: Fri, 12 Mar 2021 13:30:02 +0100	[thread overview]
Message-ID: <684332700f8be9f77348a510eb6eba22@walle.cc> (raw)
In-Reply-To: <20210312120456.GD5348@sirena.org.uk>

Am 2021-03-12 13:04, schrieb Mark Brown:
> On Fri, Mar 12, 2021 at 01:01:41PM +0100, Michael Walle wrote:
>> Am 2021-03-12 12:35, schrieb Mark Brown:
> 
>> > If the card has a clock API clock as sysclk then set_sysclk(() should
>> > be configuring that clock.
> 
>> What do you mean by "the card". The simple-audio-card itself?
> 
>> Take a look at:
>> https://elixir.bootlin.com/linux/v5.12-rc2/source/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-sl28-var3-ads2.dts#L29
> 
>> Does the card has a clock? IMHO the WM8904 codec has a clock, but not
>> the audio card.
> 
> The clock on the CODEC, which the card configures.  The CODEC should be
> passing on the configuration to the clock API.

Sorry, I don't understand.

The card calls set_sysclk(), which eventually ends up in the codec.
The codec therefore, could figure out if it needs to configure the
clock or if it can use its internal FLL.
Is that what you mean?

But the set_sysclk() of the codec isn't even called, because the
card itself already tries to call clk_set_rate() on the Codec's MCLK,
which returns with an error [0].

[0] 
https://elixir.bootlin.com/linux/v5.12-rc2/source/sound/soc/generic/simple-card-utils.c#L265

-michael

  reply	other threads:[~2021-03-12 12:31 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-10  6:43 [PATCH 0/3] Use clocks property in a device node Sameer Pujar
2021-02-10  6:43 ` Sameer Pujar
2021-02-10  6:43 ` [PATCH 1/3] ASoC: simple-card-utils: Fix device module clock Sameer Pujar
2021-02-10  6:43   ` Sameer Pujar
2021-02-11 23:44   ` Kuninori Morimoto
2021-02-11 23:44     ` Kuninori Morimoto
2021-02-14 17:56     ` Sameer Pujar
2021-02-14 17:56       ` Sameer Pujar
2021-02-14 23:25       ` Kuninori Morimoto
2021-02-14 23:25         ` Kuninori Morimoto
2021-03-09 14:41   ` Michael Walle
2021-03-09 14:41     ` Michael Walle
2021-03-09 16:27     ` Sameer Pujar
2021-03-09 16:27       ` Sameer Pujar
2021-03-09 22:30       ` Michael Walle
2021-03-09 22:30         ` Michael Walle
2021-03-10 14:50         ` Sameer Pujar
2021-03-10 14:50           ` Sameer Pujar
2021-03-10 18:14           ` Michael Walle
2021-03-10 18:14             ` Michael Walle
2021-03-10 19:19             ` Sameer Pujar
2021-03-10 19:19               ` Sameer Pujar
2021-03-11 10:27           ` Michael Walle
2021-03-11 10:27             ` Michael Walle
2021-03-11 11:05             ` Sameer Pujar
2021-03-11 11:05               ` Sameer Pujar
2021-03-11 11:16               ` Michael Walle
2021-03-11 11:16                 ` Michael Walle
2021-03-11 14:29                 ` Sameer Pujar
2021-03-11 14:29                   ` Sameer Pujar
2021-03-11 15:43                   ` Michael Walle
2021-03-11 15:43                     ` Michael Walle
2021-03-11 16:41                     ` Mark Brown
2021-03-11 16:41                       ` Mark Brown
2021-03-11 16:15           ` Mark Brown
2021-03-11 16:15             ` Mark Brown
2021-03-11 22:11             ` Michael Walle
2021-03-11 22:11               ` Michael Walle
2021-03-12 11:35               ` Mark Brown
2021-03-12 11:35                 ` Mark Brown
2021-03-12 12:01                 ` Michael Walle
2021-03-12 12:01                   ` Michael Walle
2021-03-12 12:04                   ` Mark Brown
2021-03-12 12:04                     ` Mark Brown
2021-03-12 12:30                     ` Michael Walle [this message]
2021-03-12 12:30                       ` Michael Walle
2021-03-12 13:46                       ` Mark Brown
2021-03-12 13:46                         ` Mark Brown
2021-03-15 12:05                         ` Michael Walle
2021-03-15 12:05                           ` Michael Walle
2021-03-15 15:19                           ` Sameer Pujar
2021-03-15 15:19                             ` Sameer Pujar
2021-03-15 15:33                             ` Michael Walle
2021-03-15 15:33                               ` Michael Walle
2021-03-15 15:57                               ` Sameer Pujar
2021-03-15 15:57                                 ` Sameer Pujar
2021-03-15 15:39                             ` Mark Brown
2021-03-15 15:39                               ` Mark Brown
2021-03-15 17:10                               ` Sameer Pujar
2021-03-15 17:10                                 ` Sameer Pujar
2021-03-15 17:13                                 ` Michael Walle
2021-03-15 17:13                                   ` Michael Walle
2021-03-11 16:00     ` Mark Brown
2021-03-11 16:00       ` Mark Brown
2021-03-11 21:34       ` Michael Walle
2021-03-11 21:34         ` Michael Walle
2021-02-10  6:43 ` [PATCH 2/3] Revert "ASoC: audio-graph-card: Add clocks property to endpoint node" Sameer Pujar
2021-02-10  6:43   ` Sameer Pujar
2021-02-11 13:00   ` Mark Brown
2021-02-11 13:00     ` Mark Brown
2021-02-10  6:43 ` [PATCH 3/3] arm64: tegra: Move clocks from RT5658 endpoint to device node Sameer Pujar
2021-02-10  6:43   ` Sameer Pujar
2021-02-11 15:38 ` [PATCH 0/3] Use clocks property in a " Mark Brown
2021-02-11 15:38   ` Mark Brown

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=684332700f8be9f77348a510eb6eba22@walle.cc \
    --to=michael@walle.cc \
    --cc=alsa-devel@alsa-project.org \
    --cc=broonie@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=jonathanh@nvidia.com \
    --cc=kuninori.morimoto.gx@renesas.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-tegra@vger.kernel.org \
    --cc=robh@kernel.org \
    --cc=sharadg@nvidia.com \
    --cc=spujar@nvidia.com \
    --cc=thierry.reding@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.