From patchwork Wed Jan 31 22:19:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Davis X-Patchwork-Id: 13540042 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3C413C47DB3 for ; Wed, 31 Jan 2024 22:20:33 +0000 (UTC) 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=sbHric0bjzNsRIW7TaSHpRwaDcn5REohW07Ztmstv5w=; b=CL6z5gxQ2UEPrb jlFvRylwiGoo920bc4ckr/30ZPLaNEJrfHg6++0qCI2aq9fdOd8ySk1cQZQW25FoBOlzxfO13SHjH VoTsDTN3S2jJumv9/KRFq6OYQID2QsX/Sfh3mWUh2MKOeBP4NzofGJwsYRtUUyX7MKEayQtIZW+ew n7So+rvj9VaM1VsJ8hoqHvwv48NhatePY7x2Zj3r9HysA1EFnD1x608qJBuggFMOoSMBtVABYci0u 9KmuTxvR+1qarzWOUU7mC7bSajErIHxim8USK80sMB6+Zh79nl9h9UK9yznd/WR2WH8QUpLZbaRwD OV8IPk4YnsGpE2UrfySA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rVIwM-00000005g49-42cx; Wed, 31 Jan 2024 22:20:18 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rVIw9-00000005fwP-16DG for linux-arm-kernel@lists.infradead.org; Wed, 31 Jan 2024 22:20:07 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 40VMK0VA010373; Wed, 31 Jan 2024 16:20:00 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1706739600; bh=eN3oPr+M4EypKKu046DK8GJ27aJRTrtTuWvBbhbnFeE=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=tjvEzXJdiVDGJgIzny2vLrGdXFezokbLAiE3Vu/6kJCU5vwE1uNKPin+sid+0S6Rt jOHCdbEJKAjO5BwsMdaSw5IPr5F8/C20IKSrDX+0Vaa6dSxp7mG7nTIb3uW1bw07e3 DIAL77wHFiU5aEXCdRXPNEHdvb5Cl92cUl0vtJmk= Received: from DLEE108.ent.ti.com (dlee108.ent.ti.com [157.170.170.38]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 40VMK0Wd080790 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 31 Jan 2024 16:20:00 -0600 Received: from DLEE113.ent.ti.com (157.170.170.24) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Wed, 31 Jan 2024 16:19:59 -0600 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Wed, 31 Jan 2024 16:19:59 -0600 Received: from lelvsmtp5.itg.ti.com ([10.249.42.149]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 40VMJwx3102504; Wed, 31 Jan 2024 16:19:59 -0600 From: Andrew Davis To: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sebastian Reichel , Vignesh Raghavendra CC: , , , , Andrew Davis Subject: [PATCH 01/12] dt-bindings: power: reset: Document ti,sci-reboot compatible Date: Wed, 31 Jan 2024 16:19:46 -0600 Message-ID: <20240131221957.213717-2-afd@ti.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240131221957.213717-1-afd@ti.com> References: <20240131221957.213717-1-afd@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240131_142005_410667_4AE5420B X-CRM114-Status: GOOD ( 18.65 ) 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 This calls into the system firmware using TI-SCI to reboot the system. Used as a fallback when PSCI is unable or not available to reboot the system. Signed-off-by: Andrew Davis Acked-by: Conor Dooley --- .../bindings/power/reset/ti,sci-reboot.yaml | 33 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/ti,sci-reboot.yaml diff --git a/Documentation/devicetree/bindings/power/reset/ti,sci-reboot.yaml b/Documentation/devicetree/bindings/power/reset/ti,sci-reboot.yaml new file mode 100644 index 0000000000000..aa628be33d122 --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/ti,sci-reboot.yaml @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/reset/ti,sci-reboot.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI-SCI reboot controller + +maintainers: + - Andrew Davis + +description: | + Some TI SoCs contain a system controller (like the Power Management Micro + Controller (PMMC) on Keystone 66AK2G SoC) that are responsible for controlling + the state of the various hardware modules present on the SoC. Communication + between the host processor running an OS and the system controller happens + through a protocol called TI System Control Interface (TI-SCI protocol). + + This reboot controller node uses the TI SCI protocol to perform a device reboot. + + Must be a child node of the associated TI-SCI system controller node. + +properties: + compatible: + const: ti,sci-reboot + +additionalProperties: false + +examples: + - | + k3_reboot: reboot-controller { + compatible = "ti,sci-reboot"; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 8999497011a26..45983bb174fe4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -21751,6 +21751,7 @@ F: Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml F: Documentation/devicetree/bindings/clock/ti,sci-clk.yaml F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml F: Documentation/devicetree/bindings/interrupt-controller/ti,sci-intr.yaml +F: Documentation/devicetree/bindings/power/reset/ti,sci-reboot.yaml F: Documentation/devicetree/bindings/reset/ti,sci-reset.yaml F: Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml F: drivers/clk/keystone/sci-clk.c