Subject: [PATCH v3 1/4] dt-bindings: remoteproc: add imx-rproc-psci

From: Jiafei Pan <[email-masked]>
Date: Mon, 11 May 2026 10:39:25 +0800

Add compatible string "fsl,imx-rproc-psci" for i.MX Cortex-A Core's
remoteproc support.

Signed-off-by: Jiafei Pan <[email-masked]>

---
Changes in v3:
- Fixed dt_binding_check warnings

---
 .../remoteproc/fsl,imx-rproc-psci.yaml        | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml
new file mode 100644
index 000000000000..28d00dbf8bc7
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/fsl,imx-rproc-psci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX Cortex-A Core Remote Processor via PSCI
+
+maintainers:
+  - Jiafei Pan <[email-masked]>
+
+description:
+  This binding provides support for managing Cortex-A cores as remote
+  processors on i.MX platforms using the PSCI (Power State Coordination
+  Interface) for CPU power management operations. This allows single
+  Cortex-A core or multiple Cortex-A cores to be controlled by Linux as
+  a remote processor, enabling them to run RTOS or bare-metal applications.
+
+properties:
+  compatible:
+    const: fsl,imx-rproc-psci
+
+  fsl,cpus-mask:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Bitmask indicating which CPU cores are assigned to this remote
+      processor instance. Each bit represents a CPU core, where bit N
+      corresponds to CPU N. For example, 0x2 (0b10) assigns CPU core 1,
+      while 0x6 (0b110) assigns CPU cores 1 and 2.
+
+  memory-region:
+    maxItems: 1
+    description:
+      Phandle to a reserved memory region to be used for the remote
+      processor's code and data.
+
+required:
+  - compatible
+  - fsl,cpus-mask
+  - memory-region
+
+additionalProperties: false
+
+examples:
+  - |
+        remoteproc-ca55-1 {
+            compatible = "fsl,imx-rproc-psci";
+            /* bitmask: 0b10, assign A55 Core 1 */
+            fsl,cpus-mask = <0x2>;
+            memory-region = <&rtos_ca55_reserved>;
+        };
-- 
2.43.0