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From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Alex Riesen <alexander.riesen@cetitec.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Kieran Bingham <kieran.bingham@ideasonboard.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Hans Verkuil <hverkuil-cisco@xs4all.nl>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Driver Development <devel@driverdev.osuosl.org>,
	Linux Media <linux-media@vger.kernel.org>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	Device Tree <devicetree@vger.kernel.org>,
	Renesas SoC <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH 8/8] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC
Date: 09 Mar 2020 10:31:01 +0900	[thread overview]
Message-ID: <87r1y2wbze.wl-kuninori.morimoto.gx@renesas.com> (raw)
In-Reply-To: <20200306134546.GE4878@pendragon.ideasonboard.com>


Hi

> > > Those clocks are part of the CSI-2 protocol and also don't need to be
> > > explicitly controlled. As far as I can tell from a quick check of the
> > > ADV7482 documentation, only the I2S MCLK is a general-purpose clock that
> > > needs to be exposed.
(snip)
> > Do you know, by chance, which of the snd_soc* callbacks should be used to
> > implement setting of the MCLK? The one in snd_soc_component_driver or
> > snd_soc_dai_driver->ops (snd_soc_dai_ops)?
> > 
> > Or how the userspace interface looks like? Or, if there is no userspace
> > interface for this, how the MCLK is supposed to be set? Through mclk-fs?
> 
> I'm afraid my knowledge of the sound subsystem is limited. Morimoto-san
> is the main developer and maintainer of Renesas sound drivers.
> Morimoto-sensei, would you have an answer to that question ? :-)

In my quick check, it goes to AUDIO_CLKC.
If so, you can update rcar_sound::clocks.

	&rcar_sound {
		...
-		/* update <audio_clk_b> to <cs2000> */
+		/* update <audio_clk_b> to <cs2000>,
+		 *        <audio_clk_c> to <adv748x> */
		clocks = <&cpg CPG_MOD 1005>,
			...
			 <&audio_clk_a>, <&cs2000>,
-			 <&audio_clk_c>,
+			 <&adv748x>,
			 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;

Thank you for your help !!

Best regards
---
Kuninori Morimoto

WARNING: multiple messages have this Message-ID
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Driver Development <devel@driverdev.osuosl.org>,
	Device Tree <devicetree@vger.kernel.org>,
	Kieran Bingham <kieran.bingham@ideasonboard.com>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	Renesas SoC <linux-renesas-soc@vger.kernel.org>,
	Rob Herring <robh+dt@kernel.org>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Hans Verkuil <hverkuil-cisco@xs4all.nl>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Linux Media <linux-media@vger.kernel.org>
Subject: Re: [PATCH 8/8] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC
Date: 09 Mar 2020 10:31:01 +0900	[thread overview]
Message-ID: <87r1y2wbze.wl-kuninori.morimoto.gx@renesas.com> (raw)
In-Reply-To: <20200306134546.GE4878@pendragon.ideasonboard.com>


Hi

> > > Those clocks are part of the CSI-2 protocol and also don't need to be
> > > explicitly controlled. As far as I can tell from a quick check of the
> > > ADV7482 documentation, only the I2S MCLK is a general-purpose clock that
> > > needs to be exposed.
(snip)
> > Do you know, by chance, which of the snd_soc* callbacks should be used to
> > implement setting of the MCLK? The one in snd_soc_component_driver or
> > snd_soc_dai_driver->ops (snd_soc_dai_ops)?
> > 
> > Or how the userspace interface looks like? Or, if there is no userspace
> > interface for this, how the MCLK is supposed to be set? Through mclk-fs?
> 
> I'm afraid my knowledge of the sound subsystem is limited. Morimoto-san
> is the main developer and maintainer of Renesas sound drivers.
> Morimoto-sensei, would you have an answer to that question ? :-)

In my quick check, it goes to AUDIO_CLKC.
If so, you can update rcar_sound::clocks.

	&rcar_sound {
		...
-		/* update <audio_clk_b> to <cs2000> */
+		/* update <audio_clk_b> to <cs2000>,
+		 *        <audio_clk_c> to <adv748x> */
		clocks = <&cpg CPG_MOD 1005>,
			...
			 <&audio_clk_a>, <&cs2000>,
-			 <&audio_clk_c>,
+			 <&adv748x>,
			 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;

Thank you for your help !!

Best regards
---
Kuninori Morimoto
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http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

  reply	other threads:[~2020-03-09  1:31 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-13 14:19 [PATCH 0/8] media: i2c: adv748x: add support for HDMI audio Alex Riesen
2020-01-13 14:19 ` Alex Riesen
2020-01-13 14:15 ` [PATCH 1/8] media: adv748x: add a device-specific wrapper for register block read Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 14:15 ` [PATCH 2/8] media: adv748x: add audio mute control and output selection ioctls Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-03-13  8:16   ` Hans Verkuil
2020-03-13  8:16     ` Hans Verkuil
2020-03-13 10:26     ` Alex Riesen
2020-03-13 10:26       ` Alex Riesen
2020-03-13 10:52       ` Hans Verkuil
2020-03-13 10:52         ` Hans Verkuil
2020-03-13 11:00         ` Alex Riesen
2020-03-13 11:00           ` Alex Riesen
2020-01-13 14:15 ` [PATCH 3/8] media: adv748x: add log_status ioctl Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 14:15 ` [PATCH 4/8] media: adv748x: reserve space for the audio (I2S) port in the driver structures Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 14:15 ` [PATCH 5/8] media: adv748x: add an ASoC DAI definition to the driver Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 14:15 ` [PATCH 6/8] media: adv748x: reduce amount of code for bitwise modification of device registers Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 14:15 ` [PATCH 7/8] dt-bindings: adv748x: add information about serial audio interface (I2S/TDM) Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-01-13 22:32   ` Rob Herring
2020-01-13 22:32     ` Rob Herring
2020-01-13 14:15 ` [PATCH 8/8] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC Alex Riesen
2020-01-13 14:15   ` Alex Riesen
2020-03-02 12:28   ` Geert Uytterhoeven
2020-03-02 12:28     ` Geert Uytterhoeven
2020-03-02 13:40     ` Alex Riesen
2020-03-02 13:40       ` Alex Riesen
2020-03-02 13:47       ` Geert Uytterhoeven
2020-03-02 13:47         ` Geert Uytterhoeven
2020-03-02 15:07         ` Alex Riesen
2020-03-02 15:07           ` Alex Riesen
2020-03-02 15:32           ` Geert Uytterhoeven
2020-03-02 15:32             ` Geert Uytterhoeven
2020-03-02 16:09             ` Alex Riesen
2020-03-02 16:09               ` Alex Riesen
2020-03-02 16:13               ` Geert Uytterhoeven
2020-03-02 16:13                 ` Geert Uytterhoeven
2020-03-05 14:36                 ` Alex Riesen
2020-03-05 14:36                   ` Alex Riesen
2020-03-06 12:21                   ` Geert Uytterhoeven
2020-03-06 12:21                     ` Geert Uytterhoeven
2020-03-06 13:16                   ` Laurent Pinchart
2020-03-06 13:16                     ` Laurent Pinchart
2020-03-06 13:41                     ` Alex Riesen
2020-03-06 13:41                       ` Alex Riesen
2020-03-06 13:45                       ` Laurent Pinchart
2020-03-06 13:45                         ` Laurent Pinchart
2020-03-09  1:31                         ` Kuninori Morimoto [this message]
2020-03-09  1:31                           ` Kuninori Morimoto
2020-03-09 11:09                           ` Alex Riesen
2020-03-09 11:09                             ` Alex Riesen
2020-03-10  1:07                             ` Kuninori Morimoto
2020-03-10  1:07                               ` Kuninori Morimoto
2020-03-10  8:17                               ` Alex Riesen
2020-03-10  8:17                                 ` Alex Riesen
2020-03-10 10:39                                 ` Laurent Pinchart
2020-03-10 10:39                                   ` Laurent Pinchart

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