[PATCH v2 1/2] dt-bindings: remoteproc: Add C906L rproc for Sophgo CV1800B SoC

[Junhui Liu]

Add C906L remote processor for CV1800B SoC, which is an asymmetric
processor typically running RTOS.

Signed-off-by: Junhui Liu <junhui.liu@xxxxxxxxxxxxx>
---
 .../bindings/remoteproc/sophgo,cv1800b-c906l.yaml  | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/Documentation/devicetree/bindings/remoteproc/sophgo,cv1800b-c906l.yaml b/Documentation/devicetree/bindings/remoteproc/sophgo,cv1800b-c906l.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..2061c2fd6ba343c09b1a91700ea4a695d2b57f81
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/sophgo,cv1800b-c906l.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/sophgo,cv1800b-c906l.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo C906L remote processor controller for CV1800B SoC
+
+maintainers:
+  - Junhui Liu <junhui.liu@xxxxxxxxxxxxx>
+
+description:
+  Document the bindings for the C906L remoteproc component that loads and boots
+  firmwares on the CV1800B SoC.
+
+properties:
+  compatible:
+    const: sophgo,cv1800b-c906l
+
+  firmware-name:
+    maxItems: 1
+
+  mbox-names:
+    items:
+      - const: tx
+      - const: rx
+
+  mboxes:
+    description:
+      This property is required only if the rpmsg/virtio functionality is used.
+      (see mailbox/sophgo,cv1800b-mailbox.yaml)
+    items:
+      - description: mailbox channel to send data to C906L
+      - description: mailbox channel to receive data from C906L
+
+  memory-region:
+    description:
+      List of phandles to reserved memory regions used by the remote processor.
+      The first region is required and provides the firmware region for the
+      remote processor. The following regions (vdev buffer, vrings) are optional
+      and are only required if rpmsg/virtio functionality is used.
+    minItems: 1
+    items:
+      - description: firmware region
+      - description: vdev buffer
+      - description: vring0
+      - description: vring1
+    additionalItems: true
+
+  resets:
+    maxItems: 1
+
+  sophgo,syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      A phandle to the SEC_SYS region, used for configuration of the remote
+      processor.
+
+required:
+  - compatible
+  - firmware-name
+  - memory-region
+  - resets
+  - sophgo,syscon
+
+additionalProperties: false
+
+examples:
+  - |
+    c906l-rproc {
+        compatible = "sophgo,cv1800b-c906l";
+        firmware-name = "c906l-firmware.elf";
+        mbox-names = "tx", "rx";
+        mboxes = <&mbox 0 2>, <&mbox 1 1>;
+        memory-region = <&c906l_mem>, <&vdev0buffer>,
+                        <&vdev0vring0>, <&vdev0vring1>;
+        resets = <&rst 294>;
+        sophgo,syscon = <&sec_sys>;
+    };

-- 
2.50.1