From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CH1PR05CU001.outbound.protection.outlook.com (mail-northcentralusazon11010006.outbound.protection.outlook.com [52.101.193.6]) (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 634B2351C1F; Tue, 5 May 2026 12:59:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.193.6 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777985992; cv=fail; b=B+1aPxITIoKCr0hwtsAyeKLFCzQJGkwN3lcGyY6ZE83oCL68AcApbgTQnBGtjNL3Sq6ro5pLoi5Cfwxx7vKFkxBg5RCH1G271Pc4R/hg6ZuzYXUVFo15IBnV9INtBCGX0ClZRldR1TH/0LQuEGp/yi36hGLxCQSRYx/cYf4zkfc= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777985992; c=relaxed/simple; bh=vl6D+xrbvCL9NX4ZsI7x48nhSacIGXzKLAL2hroVKP4=; h=Date:From:To:CC:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VvLYdtO0OwwAMw7URPts/Bzu70P+la1XeJN6FbTFkBZ2XsLf4UApJbcGXgfBEMYh0mtKk2wK5LGvRZ+8KIYb+gRGf3hPb4o0ESoPepA/GxB3sBh7C94d64Z+53itk5xQXydpIiwS853SFqcPpo5ZeFFRzkADiMA92H+8RB2xctY= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=uheJFMUn; arc=fail smtp.client-ip=52.101.193.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="uheJFMUn" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Fu0/fJD3BMgpu8yl+K5CTbPzT6Xklw/jfwpCQWaqYRqYB7YTRfwdCPyPh4dgAkKQnd3mywkdLfBjOpNRIDVqLo4LDmxOdK63txSeIwm9RWjUgXyUs0C4CHufunCoeobaexoJZ3BbxVYhZ3+mmrm8TxHGX/WB6UHrQJoo7hHLc5t81flgq3zZpZrQfhIljOfBXkDLm6x7OIxSYTRjJSeh8Z7aNO3DqQOAxepwpigQgLk0FgMEWwvwvbXnT9xgHTcVKhq4LQVE7gQT13BK3ZJHJL0TpP7LnWUe/4kxHr1ja41ThuHDVsAcLS7cHwH0Kx2S7PV6tSO/n3eajijDRBwNdg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=hU5wAVIJyHs9K+yaHH8vyxDxbAaXVWjT22V/HMPaxdQ=; b=pvaAREYyp7TZk/fKJW4vqz+6s54qEgxBw/eC3+pH8GnL7L8IGB65pqx2RsE6Eu59HjsO7vnTusb+N4D4HIUMhSE/y4KMpvJ+5/pCOtZS9ghkja0mJI4bkmK4VItrZorXx3/waiuoPDOarPMBJ98S6ddC4cI/VifZ7KAC1T9eZlO8KA9sVfzMBFEJPQkA2I5TV+Esgy5d4lNcLUxeB1f4y9HR5ItSvcfKOX60Pjitlk6hc8/FNruPMQIoGu2/FLKIG8SFmkyFeaYEYS9cBYNmZz4MUk2xVGiTlLQeeFUswG6Vu1jZi42r1JxzUdncwGIVRX4Qo/5dYmQQLl+Og4/EUg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.23.194) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=ti.com; dmarc=pass (p=quarantine sp=none pct=100) action=none header.from=ti.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=hU5wAVIJyHs9K+yaHH8vyxDxbAaXVWjT22V/HMPaxdQ=; b=uheJFMUn4Q9uG4qAqeAK1ugFajOgI65lsO7E/baSLrbyDx/2YrIXMyCOzsYtVXt78x3cnVtp25Phm5OiPU/xSXc6heFc/XIdxo337iJb8EbNP2wNnBHNj1hRC+kbo9u37NL9X2znpieU+0/paRGXbyJT+NWFGCkPQn9vbdGBZuY= Received: from SJ0PR13CA0178.namprd13.prod.outlook.com (2603:10b6:a03:2c7::33) by MW4PR10MB6372.namprd10.prod.outlook.com (2603:10b6:303:1e9::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9870.27; Tue, 5 May 2026 12:59:47 +0000 Received: from MW1PEPF0001615C.namprd21.prod.outlook.com (2603:10b6:a03:2c7:cafe::36) by SJ0PR13CA0178.outlook.office365.com (2603:10b6:a03:2c7::33) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9891.15 via Frontend Transport; Tue, 5 May 2026 12:59:46 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 198.47.23.194) smtp.mailfrom=ti.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=ti.com; Received-SPF: Pass (protection.outlook.com: domain of ti.com designates 198.47.23.194 as permitted sender) receiver=protection.outlook.com; client-ip=198.47.23.194; helo=lewvzet200.ext.ti.com; pr=C Received: from lewvzet200.ext.ti.com (198.47.23.194) by MW1PEPF0001615C.mail.protection.outlook.com (10.167.249.87) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.25.1 via Frontend Transport; Tue, 5 May 2026 12:59:46 +0000 Received: from DLEE207.ent.ti.com (157.170.170.95) by lewvzet200.ext.ti.com (10.4.14.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 5 May 2026 07:59:45 -0500 Received: from DLEE215.ent.ti.com (157.170.170.118) by DLEE207.ent.ti.com (157.170.170.95) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 5 May 2026 07:59:45 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DLEE215.ent.ti.com (157.170.170.118) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Tue, 5 May 2026 07:59:45 -0500 Received: from localhost (uda0133052.dhcp.ti.com [128.247.81.232]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 645CxjlD3003518; Tue, 5 May 2026 07:59:45 -0500 Date: Tue, 5 May 2026 07:59:45 -0500 From: Nishanth Menon To: "Richard Genoud (TI)" CC: Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Udit Kumar , "Abhash Kumar" , Beleswar Padhi , Thomas Richard , Gregory CLEMENT , Thomas Petazzoni , , , Subject: Re: [PATCH v2 1/1] arm64: dts: ti: k3-j7: Reserve memory for LPM meta data Message-ID: <20260505125945.mxucy4cfpno2x66z@slacking> References: <20260427160326.370415-1-richard.genoud@bootlin.com> <20260427160326.370415-2-richard.genoud@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260427160326.370415-2-richard.genoud@bootlin.com> X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW1PEPF0001615C:EE_|MW4PR10MB6372:EE_ X-MS-Office365-Filtering-Correlation-Id: ed2ff93a-6b9e-4b9a-7d99-08deaaa62f32 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|376014|7416014|36860700016|56012099003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:198.47.23.194;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:lewvzet200.ext.ti.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(82310400026)(376014)(7416014)(36860700016)(56012099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: rOLm5r9iEg9TdktgjxozXb+MkJtOpIr7xnqi2Savhu44HZUGkntNkikPMDa2oTGDb9E9Ail7Cr0Pt4ghXDnfPgkvfRaFEjh7rakBHUOj2AnDHy1Rre6EeomiAZR3JrF5ihb9GWrEw663SBTpoqS0+eOPiUyMaSvyZXyYlwBSA02cfR3B4Oo5Xo+A/Z+9hzV7AhzGktrzWuHEK0Zsr0pnvRTAfvf9j9bxg6bgPcbmFJypUvMUyhom2Y4RogEkbFZwNP1TMGkfhSIGMDjMlY9imCZyWlSZHoytwaSIhbQE+Hx6cTG3wbE7W4F4wDOafmjnBpOsvucBTlnUhMktIYd53aXpWFLRDo99N+wod4hde84sSdhTOg0KsTfzfueIzgDTqh8bFbXJb3MX4KAOWQnl30AiFQty7z/6qRhkULLXXNtUlBOABoIVMNTqsWIn0DVU X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 May 2026 12:59:46.4930 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ed2ff93a-6b9e-4b9a-7d99-08deaaa62f32 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.194];Helo=[lewvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: MW1PEPF0001615C.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR10MB6372 On 18:03-20260427, Richard Genoud (TI) wrote: > From: Prasanth Babu Mantena > > For TI SOCs J7200, J784S4, J722S, J721s2 which support low power modes, > a chunk of memory is reserved for LPM meta data, which is needed for > saving ATF context and the certificate information of ATF and OPTEE and > DM image. This LPM metadata area is firewalled to be accessed only by > TIFS. > > U-Boot/TIFS will use this area to save and restore: > - ATF context > - ATF certificate information > - OPTEE certificate information > - DM image DM image is loaded from storage, correct? > > https://software-dl.ti.com/tisci/esd/latest/2_tisci_msgs/pm/lpm.html#lpm-msg-lpm-save-addr > > U-Boot has to parse and retrieve this area from the device tree, thus > @lpm-memory node are used instead of the generic @memory. > > Signed-off-by: Prasanth Babu Mantena > Signed-off-by: Richard Genoud (TI) > --- > arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 6 ++++++ > arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi | 6 ++++++ > arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 6 ++++++ > arch/arm64/boot/dts/ti/k3-j742s2-evm.dts | 9 +++++++++ > arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 9 ++++++--- Split this up into platform wise. I dont understand why you'd not modify the ipc-firmware.dtsi and use the phandle similar to https://lore.kernel.org/all/20260318-topic-am62a-ioddr-dt-v6-19-v3-4-c41473cb23c3@baylibre.com/ Split the patches per ipc-firmware.dtsi as required. > 5 files changed, 33 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > index 5a8c2e707fde..756928a2d411 100644 > --- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi > @@ -40,6 +40,12 @@ mcu_r5fss0_core0_memory_region: memory@a0100000 { > reg = <0x00 0xa0100000 0x00 0xf00000>; > no-map; > }; > + > + lpm_memory_region: lpm-memory@a4800000 { vignesh already flagged this in previous revision - just use phandle reference in u-boot and make this memory@ > + reg = <0x00 0xa4800000 0x00 0x00300000>; > + no-map; > + bootph-all; > + }; > }; > > mux0: mux-controller-0 { > diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi > index 12a38dd1514b..ceab8f057640 100644 > --- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi > @@ -42,6 +42,12 @@ mcu_r5fss0_core0_memory_region: memory@a0100000 { > reg = <0x00 0xa0100000 0x00 0xf00000>; > no-map; > }; > + > + lpm_memory_region: lpm-memory@a9c00000 { > + reg = <0x00 0xa9c00000 0x00 0x00300000>; > + no-map; > + bootph-all; > + }; > }; > > mux0: mux-controller-0 { > diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts > index e66330c71593..eebc5cc7d4cd 100644 > --- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts > +++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts > @@ -63,6 +63,12 @@ wkup_r5fss0_core0_memory_region: memory@a0100000 { > reg = <0x00 0xa0100000 0x00 0xf00000>; > no-map; > }; > + > + lpm_memory_region: lpm-memory@a6c00000 { > + reg = <0x00 0xa6c00000 0x00 0x00300000>; > + no-map; > + bootph-all; > + }; > }; > > vmain_pd: regulator-0 { > diff --git a/arch/arm64/boot/dts/ti/k3-j742s2-evm.dts b/arch/arm64/boot/dts/ti/k3-j742s2-evm.dts > index fcb7f05d7faf..d0752c8a6b37 100644 > --- a/arch/arm64/boot/dts/ti/k3-j742s2-evm.dts > +++ b/arch/arm64/boot/dts/ti/k3-j742s2-evm.dts > @@ -23,4 +23,13 @@ memory@80000000 { > device_type = "memory"; > bootph-all; > }; > + > +}; > + > +&reserved_memory { > + lpm_memory_region: lpm-memory@ab000000 { > + reg = <0x00 0xab000000 0x00 0x00300000>; > + no-map; > + bootph-all; > + }; > }; > diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts > index 6c7458c76f53..114594f37f0b 100644 > --- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts > +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts > @@ -23,10 +23,13 @@ memory@80000000 { > device_type = "memory"; > bootph-all; > }; > +}; > > - reserved_memory: reserved-memory { > - #address-cells = <2>; > - #size-cells = <2>; > +&reserved_memory { > + lpm_memory_region: lpm-memory@ac000000 { > + reg = <0x00 0xac000000 0x00 0x00300000>; > + no-map; > + bootph-all; > }; > }; > -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D https://ti.com/opensource