linux-kernel - Re: [PATCH 2/2] ASoC: dt-bindings: document dvdd-supply property for awinic,aw88261

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Message-ID: <15afa51b-4f58-4f74-b7cc-cdc28e08a689@sirena.org.uk>
Date: Mon, 12 Jan 2026 16:32:47 +0000
From: Mark Brown <broonie@...nel.org>
To: Bharadwaj Raju <bharadwaj.raju@...hinesoul.in>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Weidong Wang <wangweidong.a@...nic.com>,
	Bhushan Shah <bhushan.shah@...hinesoul.in>,
	Luca Weiss <luca.weiss@...rphone.com>,
	~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
	linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 2/2] ASoC: dt-bindings: document dvdd-supply property for
 awinic,aw88261

On Mon, Jan 12, 2026 at 09:57:46PM +0530, Bharadwaj Raju wrote:
> On Sun, 11 Jan 2026, at 9:40 PM, Krzysztof Kozlowski wrote:

> > You mean the bindings were incomplete?

> Yes, the chip needs DVDD to power on.

> After looking at other codec drivers, they generally make it optional 
> in the binding but error out from probe if it can't be enabled.

> I'll resend the series with it made optional.

No, if the chip needs the supply it shouldn't be optional in the
bindings - it is an ABI break, but in practice only for validation since
the kernel will assume some supply is there even if not described.

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