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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1NAM11FT077.mail.protection.outlook.com (10.13.175.55) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6455.23 via Frontend Transport; Mon, 12 Jun 2023 07:42:20 +0000 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Mon, 12 Jun 2023 02:42:16 -0500 From: Michal Simek To: , , , CC: Sharath Kumar Dasari , "Amit Kumar Mahapatra" , Conor Dooley , Krzysztof Kozlowski , Manikanta Guntupalli , Parth Gajjar , "Rob Herring" , Srinivas Neeli , , Subject: [PATCH] arm64: zynqmp: Add memory reserved node for k26 Kria SOM board Date: Mon, 12 Jun 2023 09:41:45 +0200 Message-ID: <8ddc7fb4bf40faead7a015ad7e095f3f7d2ec191.1686555698.git.michal.simek@amd.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 X-Developer-Signature: v=1; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jun 2023 07:42:20.8716 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a08e99d-480d-4fed-6e53-08db6b188e16 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT077.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB8988 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Sharath Kumar Dasari PMUFW (Power Management Unit firmware) requires top 1MB of the lower DDR memory reserved for its operation, this is missing in k26 SM static dts file. Bootloader or kernel shouldn't access this location. Signed-off-by: Sharath Kumar Dasari Signed-off-by: Michal Simek --- arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts b/arch/arm64= /boot/dts/xilinx/zynqmp-sm-k26-revA.dts index c1f21b0e1760..c4774a42d5fc 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts +++ b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts @@ -50,6 +50,17 @@ memory@0 { reg =3D <0x0 0x0 0x0 0x80000000>, <0x8 0x00000000 0x0 0x80000000>; }; =20 + reserved-memory { + #address-cells =3D <2>; + #size-cells =3D <2>; + ranges; + + pmu_region: pmu@7ff00000 { + reg =3D <0x0 0x7ff00000 0x0 0x100000>; + no-map; + }; + }; + gpio-keys { compatible =3D "gpio-keys"; autorepeat; --=20 2.36.1