From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0674AE55B; Wed, 14 May 2025 20:56:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747256182; cv=none; b=lI+LP7OxvXbB43uQRERH+009bpk9KQR4x1hH5AUu6PrEkVncRVrtCT+yFHDPpbrACFD/ZBVSCLF/Y5kro/qyh/yyZry3nXz8M6bdV5ZZiuojleTqfAeWvsq5F7pqrIvuiRdCd3IKeW/7rkj1S33FXMkcGwabxxcammXDy9Hu9cY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747256182; c=relaxed/simple; bh=LzcztWerU4pmt8hh0TJh4jLsvk6/oUYWuswSfEQJhA0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=HAgjP9MKjYjEZcSxokYeUhEMwcilyzDnTRnB8JN1bHn1R355xk1mrVsVmgZXOArXqrc5owDAfUaJeojzXJSfdQGSIoB+O8604tPtZsbgoqyOFrFrvQpyxGTIQvvlusEg7a8I9Z5mKQb33kqI94LDKrhDr7zfiz784kl264wk/Kc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VKjA/3US; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VKjA/3US" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1A225C4CEE3; Wed, 14 May 2025 20:56:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1747256179; bh=LzcztWerU4pmt8hh0TJh4jLsvk6/oUYWuswSfEQJhA0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VKjA/3US6VvMiYWEFfxUTPcVRsgkq/fkEDd1FECDu3ML/8zXXjCtRGVqsgM8wCUH5 +ly2bPAmH0DwK6dNZL892QlHnLHhFjDitrtw52TwhPFYhT+LUEv5yuC7EW/yskCSy2 eNJNgCzxtKIuXEoYdQyC00fVdaiCxVlLuYEM1mvp5kXyJEcPNzlZJs92pnXqpwijHT MqAKCgjWf+09vWbdG9ViS23iPDY5zWJnOCJwri1XSKRIhmd23wvZWVmMQ/vyJPgI9L Sz6X2Oiqd7Iy9MO31pjPyE+UlaqzGmrWv5IASpHjm7eqrfGR6ceJ9sxNHOUTvroicT TSbs3g75uA6lg== Date: Wed, 14 May 2025 15:56:17 -0500 From: Rob Herring To: Sven Peter Cc: Janne Grunau , Alyssa Rosenzweig , Neal Gompa , Hector Martin , Linus Walleij , Bartosz Golaszewski , Krzysztof Kozlowski , Conor Dooley , Sebastian Reichel , Lee Jones , Marc Zyngier , "Russell King (Oracle)" , asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: [PATCH v5 02/10] dt-bindings: power: reboot: Add Apple Mac SMC Reboot Controller Message-ID: <20250514205617.GA3020430-robh@kernel.org> References: <20250511-smc-6-15-v5-0-f5980bdb18bd@svenpeter.dev> <20250511-smc-6-15-v5-2-f5980bdb18bd@svenpeter.dev> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250511-smc-6-15-v5-2-f5980bdb18bd@svenpeter.dev> On Sun, May 11, 2025 at 08:18:37AM +0000, Sven Peter wrote: > On Apple Silicon machines a clean shutdown or reboot requires > talking to SMC and writing to NVMEM cells. Add a binding for > this MFD sub-device. > > Reviewed-by: Alyssa Rosenzweig > Signed-off-by: Sven Peter > --- > .../bindings/power/reset/apple,smc-reboot.yaml | 52 ++++++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 53 insertions(+) > > diff --git a/Documentation/devicetree/bindings/power/reset/apple,smc-reboot.yaml b/Documentation/devicetree/bindings/power/reset/apple,smc-reboot.yaml > new file mode 100644 > index 0000000000000000000000000000000000000000..e55e524914c2f57f7acf239fdefcbdc7a993b69f > --- /dev/null > +++ b/Documentation/devicetree/bindings/power/reset/apple,smc-reboot.yaml > @@ -0,0 +1,52 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/power/reset/apple,smc-reboot.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Apple SMC Reboot Controller > + > +description: | Don't need '|' here. > + The Apple System Management Controller (SMC) provides reboot functionality > + on Apple Silicon SoCs. It uses NVMEM cells to store and track various > + system state information related to boot, shutdown, and panic events. Reviewed-by: Rob Herring (Arm)