linux-kernel - Re: [PATCH 1/8] dt-bindings: rtc: Add Apple SMC RTC

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Message-ID: <175563462607.1254097.12905994195694572424.robh@kernel.org>
Date: Tue, 19 Aug 2025 15:17:31 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: James Calligeros <jcalligeros99@...il.com>
Cc: linux-arm-kernel@...ts.infradead.org, asahi@...ts.linux.dev,
	Lee Jones <lee@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Mark Kettenis <kettenis@...nbsd.org>, Janne Grunau <j@...nau.net>,
	linux-input@...r.kernel.org,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Sven Peter <sven@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Alyssa Rosenzweig <alyssa@...enzweig.io>, linux-rtc@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org,
	Jean Delvare <jdelvare@...e.com>, linux-hwmon@...r.kernel.org,
	devicetree@...r.kernel.org, Neal Gompa <neal@...pa.dev>
Subject: Re: [PATCH 1/8] dt-bindings: rtc: Add Apple SMC RTC


On Tue, 19 Aug 2025 21:47:53 +1000, James Calligeros wrote:
> From: Sven Peter <sven@...nel.org>
> 
> Apple Silicon Macs (M1, etc.) have an RTC that is part of the PMU IC,
> but most of the PMU functionality is abstracted out by the SMC.
> An additional RTC offset stored inside NVMEM is required to compute
> the current date/time.
> 
> Reviewed-by: Mark Kettenis <kettenis@...nbsd.org>
> Reviewed-by: Neal Gompa <neal@...pa.dev>
> Signed-off-by: Sven Peter <sven@...nel.org>
> Signed-off-by: James Calligeros <jcalligeros99@...il.com>
> ---
>  .../bindings/mfd/apple,smc.yaml          |  9 +++++++
>  .../bindings/rtc/apple,smc-rtc.yaml      | 35 +++++++++++++++++++++++++
>  MAINTAINERS                              |  1 +
>  3 files changed, 45 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>