linux-kernel - Re: [PATCH 3/3] ASoC: simple-card-utils: enable clocks/clock-names/clock-ranges

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Date:   Thu, 8 Dec 2016 14:09:01 -0800
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Cc:     Russell King - ARM Linux <linux@...linux.org.uk>,
        Rob Herring <robh@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Linux-DT <devicetree@...r.kernel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Linux-Kernel <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>, linux-clk@...r.kernel.org,
        Linux-ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 3/3] ASoC: simple-card-utils: enable
 clocks/clock-names/clock-ranges

On 12/05, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> 
> Current simple-card is supporting this style for clocks
> 
> 	sound {
> 		...
> 		simple-audio-card,cpu {
> 			sound-dai = <&xxx>;
> 			clocks = <&cpu_clock>;
> 		};
> 		simple-audio-card,codec {
> 			sound-dai = <&xxx>;
> 			clocks = <&codec_clock>;
> 		};
> 	};
> 
> Now, it can support this style too, because we can use
> devm_get_clk_from_child() now.
> 
> 	sound {
> 		...
> 		clocks = <&cpu_clock>, <&codec_clock>;
> 		clock-names = "cpu", "codec";
> 		clock-ranges;
> 		...
> 		simple-audio-card,cpu {
> 			sound-dai = <&xxx>;
> 		};
> 		simple-audio-card,codec {
> 			sound-dai = <&xxx>;
> 		};
> 	};
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>

I don't see any reason why we need this patch though. The binding
works as is, so supporting different styles doesn't seem like a
good idea to me. Let's just keep what we have? Even if a sub-node
like cpu or codec gets more than one element in the clocks list
property, we can make that work by passing a clock-name then
based on some sort of other knowledge.

-- 
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