From patchwork Tue Oct 5 15:59:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 12537121 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D68CC433F5 for ; Tue, 5 Oct 2021 16:02:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3221561166 for ; Tue, 5 Oct 2021 16:02:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3221561166 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=marcan.st Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=yfh9W/9xyoqliZDmD0ihhNz8no+UOYaLy01K9d21Bb8=; b=STbZ/mDO0EYqek dPlgxgnDoP9hqSV8yyYEwEBmUPPaHZy8vPIPRNuNKQ2wNtoS6cv1Ifayg310b0k/ws8NhpBbLH1Mp czdTiyeT+tDXJenjGg1i0jPo7VsBGiuDusnzWfumPHVLgan1buVBdpLMl80ALwdb47auq5gFQJNr9 2TNjE2Qs7Pa+bpwp7Ilq0MIvsstdq5eOgQ2sg+HBBOO6J5yzyEKKd8AbtysvdgQ24m6OHiYeOnFon 6tgDJTXNGqyON9aiMJSFvihubDA1RyW5mXzL5d0T7Q5OtXeDFbvbFffTwLb1y7XLj5WYPUZWrWSVI lt/XA3NRnC99ym34MQOQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mXmrg-00BCAM-0d; Tue, 05 Oct 2021 16:00:24 +0000 Received: from marcansoft.com ([212.63.210.85] helo=mail.marcansoft.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mXmrG-00BC2D-KI for linux-arm-kernel@lists.infradead.org; Tue, 05 Oct 2021 16:00:02 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 650CB41EA7; Tue, 5 Oct 2021 15:59:46 +0000 (UTC) From: Hector Martin To: linux-arm-kernel@lists.infradead.org Cc: Hector Martin , Marc Zyngier , Rob Herring , Arnd Bergmann , Linus Walleij , Alyssa Rosenzweig , Krzysztof Kozlowski , Greg Kroah-Hartman , Mark Kettenis , Philipp Zabel , "Rafael J. Wysocki" , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH 1/7] dt-bindings: arm: apple: Add apple,pmgr binding Date: Wed, 6 Oct 2021 00:59:17 +0900 Message-Id: <20211005155923.173399-2-marcan@marcan.st> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211005155923.173399-1-marcan@marcan.st> References: <20211005155923.173399-1-marcan@marcan.st> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211005_085958_869336_3D416600 X-CRM114-Status: GOOD ( 16.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The PMGR block in Apple Silicon SoCs is responsible for SoC power management. There are two PMGRs in T8103, with different register layouts but compatible registers. In order to support this as well as future SoC generations with backwards-compatible registers, we declare these blocks as syscons and bind to individual registers in child nodes. Each register controls one SoC device. The respective apple compatibles are defined in case device-specific quirks are necessary in the future, but currently these nodes are expected to be bound by the generic syscon driver. Signed-off-by: Hector Martin Reviewed-by: Mark Kettenis . --- .../bindings/arm/apple/apple,pmgr.yaml | 74 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml diff --git a/Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml b/Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml new file mode 100644 index 000000000000..0304164e4140 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/apple/apple,pmgr.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple SoC Power Manager (PMGR) + +maintainers: + - Hector Martin + +description: | + Apple SoCs include a PMGR block responsible for power management, + which can control various clocks, resets, power states, and + performance features. This node represents the PMGR as a syscon, + with sub-nodes representing individual features. + + Apple SoCs may have a secondary "mini-PMGR"; it is represented + separately in the device tree, but works the same way. + +select: + properties: + compatible: + contains: + enum: + - apple,t8103-pmgr + - apple,t8103-minipmgr + - apple,pmgr + + required: + - compatible + +properties: + $nodename: + pattern: "^power-management@[0-9a-f]+$" + + compatible: + items: + - enum: + - apple,t8103-pmgr + - apple,t8103-minipmgr + - const: apple,pmgr + - const: syscon + - const: simple-mfd + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: true + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + power-management@23b700000 { + compatible = "apple,t8103-pmgr", "apple,pmgr", "syscon", "simple-mfd"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x2 0x3b700000 0x0 0x14000>; + }; + + power-management@23b700000 { + compatible = "apple,t8103-minipmgr", "apple,pmgr", "syscon", "simple-mfd"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x2 0x3d280000 0x0 0xc000>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index abdcbcfef73d..d25598842d15 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1719,6 +1719,7 @@ B: https://github.com/AsahiLinux/linux/issues C: irc://irc.oftc.net/asahi-dev T: git https://github.com/AsahiLinux/linux.git F: Documentation/devicetree/bindings/arm/apple.yaml +F: Documentation/devicetree/bindings/arm/apple/* F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml F: arch/arm64/boot/dts/apple/