linux-kernel - Re: [PATCH v2 08/10] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC

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Message-ID: <20200323073557.GA4298@pflmari>
Date:   Mon, 23 Mar 2020 08:35:57 +0100
From:   Alex Riesen <alexander.riesen@...itec.com>
To:     Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
CC:     Kieran Bingham <kieran.bingham@...asonboard.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        "Hans Verkuil" <hverkuil-cisco@...all.nl>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        <devel@...verdev.osuosl.org>, <linux-media@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH v2 08/10] arm64: dts: renesas: salvator: add a connection
 from adv748x codec (HDMI input) to the R-Car SoC

Hi Morimoto-san,

Kuninori Morimoto, Mon, Mar 23, 2020 01:12:00 +0100:
> > As all known variants of the Salvator board have the HDMI decoder
> > chip (the ADV7482) connected to the SSI4 on R-Car SoC, the ADV7482
> > endpoint and the connection definitions are placed in the common board
> > file.
> > For the same reason, the CLK_C clock line and I2C configuration (similar
> > to the ak4613, on the same interface) are added into the common file.
> > 
> > Signed-off-by: Alexander Riesen <alexander.riesen@...itec.com>
> > Reviewed-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> (snip)
> > @@ -758,8 +769,19 @@ &rcar_sound {
> >  		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
> >  		 <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
> >  		 <&audio_clk_a>, <&cs2000>,
> > -		 <&audio_clk_c>,
> > +		 <&adv7482_hdmi_in>,
> >  		 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;
> > +	clock-names = "ssi-all",
> > +		      "ssi.9", "ssi.8", "ssi.7", "ssi.6",
> > +		      "ssi.5", "ssi.4", "ssi.3", "ssi.2",
> > +		      "ssi.1", "ssi.0",
> > +		      "src.9", "src.8", "src.7", "src.6",
> > +		      "src.5", "src.4", "src.3", "src.2",
> > +		      "src.1", "src.0",
> > +		      "mix.1", "mix.0",
> > +		      "ctu.1", "ctu.0",
> > +		      "dvc.0", "dvc.1",
> > +		      "clk_a", "clk_b", "clk_c", "clk_i";
> 
> I think you don't need to overwrite clock-names here in this case ?

I vaguely remember something using the names and failing to enable clk_c
without the list spelled out...

I shall re-test though, perhaps it was my own code (since removed) using it.

Regards,
Alex