From patchwork Thu Apr 21 20:36:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Gerlach X-Patchwork-Id: 12822400 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 067B4C433F5 for ; Thu, 21 Apr 2022 20:39:02 +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=z4V/AN75nOeSZlxCLGyptpVadQo1anlxMqYQJck3FJU=; b=m2XNtoQ/dGYc7b l1wZquyIz4FLmo4VLBvxeGmkMpwB6ITWzD4YNN5MzbJ867IHeqC4HIZGiK5W98wAQCETbEIEgWEai 4l2MxoUPgA6PFTGf0vG6O79UGWiXYefgb6GuNKZKxv2XWS+3a06iY0/D2JVMYK6Q6kYimcWcYJMd6 RBUnyINdcobegsrUppJ6oablXR8xipYQQ6DjZzNVGjwAEsCt7J9dvhNKSo9MQJNUcIk3VNGCLMAY6 FEuseSVcdm7OXjWhFzi4TvLu5NNt9LvQyzcPLUZDGO3DfT6o7Y9MazcqT6dTHhGJzi+e5dRZwSQjf afr4F+zCYhbLPLbho7qw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhdYq-00Euuu-W7; Thu, 21 Apr 2022 20:37:57 +0000 Received: from lelv0142.ext.ti.com ([198.47.23.249]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhdYn-00EutU-9T for linux-arm-kernel@lists.infradead.org; Thu, 21 Apr 2022 20:37:54 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 23LKbk7R026792; Thu, 21 Apr 2022 15:37:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1650573467; bh=7mnJvrp490Lo0N7o19GCy4p70pRbdpLKgPu8bMwwMXA=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=gLdWwpNS5urCNE/bvBFaLNAN1OEmg3tlLkpXBBxeqFbUM7k0X2GENuIzEqjn4fhYA T6RAwfssZo9xrgs88L/Vqscid1We58fTIeI5bp3LkIJBvK2pOD+CkXLQjZnFr27mjY 7eRhpl1Z/TdC9jg3El/CYTo3Fl8PLOmlOc1el9Hg= Received: from DFLE111.ent.ti.com (dfle111.ent.ti.com [10.64.6.32]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 23LKbkGe084672 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 21 Apr 2022 15:37:46 -0500 Received: from DFLE113.ent.ti.com (10.64.6.34) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Thu, 21 Apr 2022 15:37:46 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Thu, 21 Apr 2022 15:37:46 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 23LKbkwe026868; Thu, 21 Apr 2022 15:37:46 -0500 From: Dave Gerlach To: Rob Herring , Santosh Shilimkar , Krzysztof Kozlowski , Tero Kristo , Nishanth Menon CC: , , , Vignesh Raghavendra , Dave Gerlach Subject: [PATCH 1/6] dt-bindings: ti,sci: Add ti,ctx-memory-region property Date: Thu, 21 Apr 2022 15:36:54 -0500 Message-ID: <20220421203659.27853-2-d-gerlach@ti.com> X-Mailer: git-send-email 2.35.0 In-Reply-To: <20220421203659.27853-1-d-gerlach@ti.com> References: <20220421203659.27853-1-d-gerlach@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-20220421_133753_503313_9D4A6B95 X-CRM114-Status: GOOD ( 11.98 ) 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 Add documentation for the ti,ctx-memory-region property which is a phandle to a reserved-memory carveout to be used by the ti_sci driver storage of low power mode memory context. This is optional for normal system operation but required to enabled suspend-to-mem usage of Deep Sleep state. Signed-off-by: Dave Gerlach --- .../devicetree/bindings/arm/keystone/ti,sci.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml index 34f5f877d444..ec88aa88a2a0 100644 --- a/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml +++ b/Documentation/devicetree/bindings/arm/keystone/ti,sci.yaml @@ -61,6 +61,15 @@ properties: mboxes: minItems: 2 + ti,ctx-memory-region: + description: + Phandle to the reserved memory node to be associated with the + ti-sci device, to be used for saving low power context. The + reserved memory node should be a carveout node, and should + be defined as per the bindings in + Documentation/devicetree/bindings/reserved-memory/reserved-memory.yaml + $ref: /schemas/types.yaml#/definitions/string + ti,system-reboot-controller: description: Determines If system reboot can be triggered by SoC reboot type: boolean