linux-kernel - Re: [PATCHv5 8/9] arm64: dts: imx8m: update spdif sound card node properties

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Date: Mon, 24 Jun 2024 04:51:55 -0400 (EDT)
From: Elinor Montmasson <elinor.montmasson@...oirfairelinux.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
	Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
	Sascha Hauer <s.hauer@...gutronix.de>, 
	Fabio Estevam <festevam@...il.com>, 
	Russell King <linux@...linux.org.uk>, 
	Catalin Marinas <catalin.marinas@....com>, 
	Will Deacon <will@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
	Takashi Iwai <tiwai@...e.com>, 
	shengjiu wang <shengjiu.wang@...il.com>, 
	Xiubo Lee <Xiubo.Lee@...il.com>, 
	Nicolin Chen <nicoleotsuka@...il.com>, 
	Pengutronix Kernel Team <kernel@...gutronix.de>, 
	linux-sound <linux-sound@...r.kernel.org>, 
	devicetree <devicetree@...r.kernel.org>, imx <imx@...ts.linux.dev>, 
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, 
	linux-kernel <linux-kernel@...r.kernel.org>, 
	alsa-devel <alsa-devel@...a-project.org>, 
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>, 
	Philip-Dylan Gleonec <philip-dylan.gleonec@...oirfairelinux.com>
Subject: Re: [PATCHv5 8/9] arm64: dts: imx8m: update spdif sound card node
 properties

From: "Krzysztof Kozlowski" <krzk@...nel.org>
Sent: Sunday, 23 June, 2024 13:10:48
> On 20/06/2024 15:25, Elinor Montmasson wrote:
>> Following merge of imx-spdif driver into fsl-asoc-card:
>> * update properties to match those used by fsl-asoc-card.
>> * S/PDIF in/out dummy codecs must now be declared explicitly, add and
>>   use them.
>> 
>> These modifications were tested only on an imx8mn-evk board.
> 
> So new DTS will not work on old kernel... Can you at least explain why
> this is needed and what benefits this make? You change hardware
> description, so whatever you merged in drivers is not really relevant, I
> would say.


Ack, I will explain the reasons in the commit message,
which are in my answer to your review of commit 7/9.


Best regards,
Elinor Montmasson