linux-kernel - Re: [PATCHv4 8/9] ASoC: fsl-asoc-card: add DT property "cpu-system-clock-direction-out"

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Date: Fri, 31 May 2024 08:47:22 -0400 (EDT)
From: Elinor Montmasson <elinor.montmasson@...oirfairelinux.com>
To: Mark Brown <broonie@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, 
	shengjiu wang <shengjiu.wang@...il.com>, 
	Xiubo Lee <Xiubo.Lee@...il.com>, Fabio Estevam <festevam@...il.com>, 
	Nicolin Chen <nicoleotsuka@...il.com>, 
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
	linux-sound <linux-sound@...r.kernel.org>, 
	devicetree <devicetree@...r.kernel.org>, 
	linux-kernel <linux-kernel@...r.kernel.org>, 
	alsa-devel <alsa-devel@...a-project.org>, 
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCHv4 8/9] ASoC: fsl-asoc-card: add DT property
 "cpu-system-clock-direction-out"

From: "Mark Brown" <broonie@...nel.org>
Sent: Friday, 17 May, 2024 13:06:03
> On Fri, May 17, 2024 at 05:05:38AM -0400, Elinor Montmasson wrote:
> 
>> This new compatible is intended to be used when there is no codec
>> device/driver. There is technically no codec device/driver for which
>> the clock input can be set.
> 
> This is obviously not true, there clearly is a driver.
> 
>> Is it a bad idea to allow setting the cpu sysclk direction only ?
>> Should the compatible be limited to use-cases where the cpu sysclk
>> direction cannot be set by the machine driver ?
> 
> When I said "this should use the clock bindings" I meant that we should
> use the clock bindings for configuration here.

As far I as know, it's not possible to set the direction with
the clock bindings, but maybe there is and I missed something ?