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client-ip=165.204.84.17; helo=satlexmb08.amd.com; pr=C Received: from satlexmb08.amd.com (165.204.84.17) by BN2PEPF00004FBD.mail.protection.outlook.com (10.167.243.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.17 via Frontend Transport; Tue, 14 Apr 2026 16:16:01 +0000 Received: from satlexmb10.amd.com (10.181.42.219) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Tue, 14 Apr 2026 11:16:00 -0500 Received: from satlexmb08.amd.com (10.181.42.217) by satlexmb10.amd.com (10.181.42.219) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Tue, 14 Apr 2026 11:16:00 -0500 Received: from xsjblevinsk51.xilinx.com (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Tue, 14 Apr 2026 11:15:59 -0500 From: Ben Levinsky To: , CC: , , , , , , , , Subject: [PATCH 1/2] dt-bindings: remoteproc: add AMD MicroBlaze binding Date: Tue, 14 Apr 2026 09:15:57 -0700 Message-ID: <20260414161558.2579920-2-ben.levinsky@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260414161558.2579920-1-ben.levinsky@amd.com> References: <20260414161558.2579920-1-ben.levinsky@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF00004FBD:EE_|IA4PR12MB9763:EE_ X-MS-Office365-Filtering-Correlation-Id: f482da0f-ad2c-433a-1910-08de9a411ea1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700016|1800799024|13003099007|56012099003|18002099003|22082099003|20046099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 3K1vL4vu6/npZCjgqzVzpXXRm/jGJX0mW1LQ/1LbjiWPOBG8SuEv6Adqvcin7TrdabOkSNqcAZETHt9nXi5gfrdEFkz3lpAgnZGygiKeqxiKhau98ZxuEnAZxq3kCI/YTJbQFQ21ABZtX7KzyQttQAyFOZqRlF2QyP7aL1jYXnRdRhSueSdC82193KB/2LdUcrsWZbSqlgiqYH5dbS/R2Z5wSp6ZPhvA54IA6kdr/nvjDYMmnCs2eJXE7wKWDXxXPAxSafoboJJcseCnDVbfTfwZBGoRSZeKANfxQZ3LM0H4fsEM5DUbqxmM5S/WL/F8Ut0sAQStNpCzsRWpy1yt5loymui2Uqnpwfy7KD/SG6Viu7IEz47Qgg+gn0I7vnZVUdLEdy/YpXfiOC5SvHv+x4x8sbZRTKfDEyE4kNL5tygPzK6e57YAUbnOWoux2gPJ X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Apr 2026 16:16:01.0182 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f482da0f-ad2c-433a-1910-08de9a411ea1 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF00004FBD.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA4PR12MB9763 Describe an AMD MicroBlaze remote processor controlled through the remoteproc framework. The binding models the MicroBlaze remoteproc device as a child node whose reg property describes the executable firmware memory window in the MicroBlaze-local address space. The parent bus node provides standard devicetree address translation through ranges so Linux can access the same memory through the system physical address space. An active-low reset GPIO holds the MicroBlaze in reset until firmware loading completes. Signed-off-by: Ben Levinsky --- .../bindings/remoteproc/amd,microblaze.yaml | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/amd,microblaze.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/amd,microblaze.yaml b/Documentation/devicetree/bindings/remoteproc/amd,microblaze.yaml new file mode 100644 index 000000000000..2811610204a9 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/amd,microblaze.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/amd,microblaze.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AMD MicroBlaze remote processor + +maintainers: + - Ben Levinsky + +description: + MicroBlaze remote processor controlled by Linux through the remoteproc + framework. + + The executable firmware memory window is described in the + MicroBlaze-local address space by the node's reg property and translated + to the system physical address space with standard devicetree address + translation provided by the parent bus node's ranges property. + +properties: + $nodename: + pattern: "^remoteproc@[0-9a-f]+$" + + compatible: + const: amd,microblaze + + reg: + maxItems: 1 + description: + MicroBlaze-local address and size of the executable firmware memory + window. + + firmware-name: + maxItems: 1 + + reset-gpios: + maxItems: 1 + +required: + - compatible + - reg + - reset-gpios + +additionalProperties: false + +examples: + - | + #include + + / { + #address-cells = <2>; + #size-cells = <2>; + + bus@b0000000 { + compatible = "simple-pm-bus"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x0 0xb0000000 0x40000>; + + remoteproc@0 { + compatible = "amd,microblaze"; + reg = <0x0 0x40000>; + reset-gpios = <&mbv_reset_gpio 0 GPIO_ACTIVE_LOW>; + }; + }; + }; -- 2.34.1