[PATCH net-next v2 1/8] dt-bindings: net: ti,rpmsg-eth: Add DT binding for RPMSG ETH

MD Danish Anwar
2025-09-02T09:08:43Z

Add device tree binding documentation for Texas Instruments RPMsg Ethernet
channels. This binding describes the shared memory communication interface
between host processor and a remote processor for Ethernet packet exchange.

The binding defines the required 'memory-region' property that references
the dedicated shared memory area used for exchanging Ethernet packets
between processors.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
.../devicetree/bindings/net/ti,rpmsg-eth.yaml | 38 +++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/ti,rpmsg-eth.yaml

diff --git a/Documentation/devicetree/bindings/net/ti,rpmsg-eth.yaml b/Documentation/devicetree/bindings/net/ti,rpmsg-eth.yaml
new file mode 100644
index 000000000000..1c86d5c020b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ti,rpmsg-eth.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,rpmsg-eth.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments RPMsg channel nodes for Ethernet communication
+
+description: |
+ RPMsg Ethernet subnode represents the communication interface between host
+ processor and a remote processor.
+
+maintainers:
+ - MD Danish Anwar <danishanwar@ti.com>
+
+properties:
+ memory-region:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ Phandle to the shared memory region used for communication between the
+ host processor and the remote processor.
+ This shared memory region is used to exchange Ethernet packets.
+
+required:
+ - memory-region
+
+additionalProperties: false
+
+examples:
+ - |
+ main_r5fss0_core0 {
+ mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
+ memory-region = <&main_r5fss0_core0_dma_memory_region>,
+ <&main_r5fss0_core0_memory_region>;
+ rpmsg-eth {
+ memory-region = <&main_r5fss0_core0_memory_region_shm>;
+ };
+ };
--
2.34.1