From: James Calligeros <jcalligeros99@gmail.com>
To: Krzysztof Kozlowski <krzk@kernel.org>
Cc: "David Rhodes" <david.rhodes@cirrus.com>,
"Richard Fitzgerald" <rf@opensource.cirrus.com>,
"Martin Povišer" <povik+lin@cutebit.org>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Mark Brown" <broonie@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Jaroslav Kysela" <perex@perex.cz>,
"Takashi Iwai" <tiwai@suse.com>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
"Shenghao Ding" <shenghao-ding@ti.com>,
"Kevin Lu" <kevin-lu@ti.com>, "Baojun Xu" <baojun.xu@ti.com>,
"Sen Wang" <sen@ti.com>, "Sven Peter" <sven@kernel.org>,
"Janne Grunau" <j@jannau.net>, "Neal Gompa" <neal@gompa.dev>,
asahi@lists.linux.dev, linux-sound@vger.kernel.org,
patches@opensource.cirrus.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v2 02/21] ASoC: dt-bindings: cs42l42: Do not require chip power supplies
Date: Sat, 10 Oct 2026 12:20:04 +1000 [thread overview]
Message-ID: <WT25lTvHQhioJE_CrUW6Dw@gmail.com> (raw)
In-Reply-To: <20261009-memorable-acoustic-dalmatian-03e22a@quoll>
On Friday, 9 October 2026 5:10:01 pm Australian Eastern Standard Time
Krzysztof Kozlowski wrote:
> On Sun, Oct 04, 2026 at 04:03:29PM +1000, James Calligeros wrote:
> > Some integrators do not expose the power rails connected to the codec
> > in a way that can be expressed in the Devicetree. Do not require them
> > to be specified on such platforms.
>
> I don't understand how these cannot be expressed in Devicetree. What are
> we missing?
On Apple devices, the regulator(s) driving these pins are completely opaque.
They are not exposed via the Apple Devicetree or any other discoverable
interface, and they are not controllable. As far as we can tell, the pins in
question are powered whenever the machine is powered on.
next prev parent reply other threads:[~2026-10-10 2:20 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-04 6:03 [PATCH v2 00/21] Add speaker and headset jack support for Apple Silicon Macs James Calligeros
2026-10-04 6:03 ` [PATCH v2 01/21] ASoC: dt-bindings: cs42l84: Document sound-name-prefix property James Calligeros
2026-10-09 7:09 ` Krzysztof Kozlowski
2026-10-04 6:03 ` [PATCH v2 02/21] ASoC: dt-bindings: cs42l42: Do not require chip power supplies James Calligeros
2026-10-09 7:10 ` Krzysztof Kozlowski
2026-10-10 2:20 ` James Calligeros [this message]
2026-10-04 6:03 ` [PATCH v2 03/21] ASoC: dt-bindings: cs42l42: Document #sound-dai-cells property James Calligeros
2026-10-09 7:10 ` Krzysztof Kozlowski
2026-10-04 6:03 ` [PATCH v2 04/21] ASoC: dt-bindings: cs42l42: Document sound-name-prefix property James Calligeros
2026-10-09 7:11 ` Krzysztof Kozlowski
2026-10-04 6:03 ` [PATCH v2 05/21] ASoC: dt-bindings: Add binding for Apple Silicon Mac audio James Calligeros
2026-10-09 7:17 ` Krzysztof Kozlowski
2026-10-09 7:21 ` James Calligeros
2026-10-09 7:29 ` Krzysztof Kozlowski
2026-10-10 2:48 ` James Calligeros
2026-10-04 6:03 ` [PATCH v2 06/21] ASoC: ops: Introduce 'snd_soc_deactivate_kctl' James Calligeros
2026-10-09 8:16 ` Cezary Rojewski
2026-10-04 6:03 ` [PATCH v2 07/21] ASoC: ops: Introduce 'soc_set_enum_kctl' James Calligeros
2026-10-07 17:36 ` Ajay Kumar Nandam
2026-10-09 8:27 ` Cezary Rojewski
2026-10-04 6:03 ` [PATCH v2 08/21] ASoC: card: Let 'fixup_controls' return errors James Calligeros
2026-10-07 14:23 ` Charles Keepax
2026-10-04 6:03 ` [PATCH v2 09/21] ASoC: apple: Add macaudio machine driver James Calligeros
2026-10-07 18:04 ` Ajay Kumar Nandam
2026-10-09 11:52 ` Cezary Rojewski
2026-10-04 6:03 ` [PATCH v2 10/21] arm64: dts: apple: t8103-j274: Add speaker/headset jack nodes James Calligeros
2026-10-07 18:17 ` Ajay Kumar Nandam
2026-10-04 6:03 ` [PATCH v2 11/21] arm64: dts: apple: t8103-j313: " James Calligeros
2026-10-07 18:32 ` Ajay Kumar Nandam
2026-10-08 8:46 ` James Calligeros
2026-10-08 9:34 ` Ajay Kumar Nandam
2026-10-04 6:03 ` [PATCH v2 12/21] arm64: dts: apple: t8103-j293: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 13/21] arm64: dts: apple: t8103-j45x: Add headset " James Calligeros
2026-10-08 6:18 ` Ajay Kumar Nandam
2026-10-04 6:03 ` [PATCH v2 14/21] arm64: dts: apple: t8112-j413: Add speaker/headset " James Calligeros
2026-10-04 6:03 ` [PATCH v2 15/21] arm64: dts: apple: t8112-j415: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 16/21] arm64: dts: apple: t8112-j473: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 17/21] arm64: dts: apple: t8112-j493: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 18/21] arm64: dts: apple: t600x-j31x: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 19/21] arm64: dts: apple: t600x-j375: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 20/21] arm64: dts: apple: t602x-j41x: " James Calligeros
2026-10-04 6:03 ` [PATCH v2 21/21] arm64: dts: apple: t602x-j47x: " James Calligeros
2026-10-08 9:29 ` Ajay Kumar Nandam
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