1 files changed, 125 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/remoteproc/ti,k3-m4f-rproc.yaml b/Documentation/devicetree/bindings/remoteproc/ti,k3-m4f-rproc.yaml
new file mode 100644
index 000000000000..2bd0752b6ba9
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/ti,k3-m4f-rproc.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/ti,k3-m4f-rproc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI K3 M4F processor subsystems
+
+maintainers:
+  - Hari Nagalla <hnagalla@ti.com>
+  - Mathieu Poirier <mathieu.poirier@linaro.org>
+
+description: |
+  Some K3 family SoCs have Arm Cortex M4F cores. AM64x is a SoC in K3
+  family with a M4F core. Typically safety oriented applications may use
+  the M4F core in isolation without an IPC. Where as some industrial and
+  home automation applications, may use the M4F core as a remote processor
+  with IPC communications.
+
+$ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,am64-m4fss
+
+  power-domains:
+    maxItems: 1
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 2
+
+  reg:
+    items:
+      - description: IRAM internal memory region
+      - description: DRAM internal memory region
+
+  reg-names:
+    items:
+      - const: iram
+      - const: dram
+
+  resets:
+    maxItems: 1
+
+  firmware-name:
+    maxItems: 1
+    description: Name of firmware to load for the M4F core
+
+  mboxes:
+    description:
+      OMAP Mailbox specifier denoting the sub-mailbox, to be used for
+      communication with the remote processor. This property should match
+      with the sub-mailbox node used in the firmware image.
+    maxItems: 1
+
+  memory-region:
+    description:
+      phandle to the reserved memory nodes to be associated with the
+      remoteproc device. Optional memory regions available for firmware
+      specific purposes.
+      (see reserved-memory/reserved-memory.yaml in dtschema project)
+    maxItems: 8
+    items:
+      - description: regions used for DMA allocations like vrings, vring buffers
+                     and memory dedicated to firmware's specific purposes.
+    additionalItems: true
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - ti,sci
+  - ti,sci-dev-id
+  - ti,sci-proc-ids
+  - resets
+  - firmware-name
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    reserved-memory {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        mcu_m4fss_dma_memory_region: m4f-dma-memory@9cb00000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9cb00000 0x00 0x100000>;
+            no-map;
+        };
+
+        mcu_m4fss_memory_region: m4f-memory@9cc00000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9cc00000 0x00 0xe00000>;
+            no-map;
+        };
+    };
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        mailbox0_cluster0: mailbox-0 {
+            #mbox-cells = <1>;
+        };
+
+        remoteproc@5000000 {
+            compatible = "ti,am64-m4fss";
+            reg = <0x00 0x5000000 0x00 0x30000>,
+                  <0x00 0x5040000 0x00 0x10000>;
+            reg-names = "iram", "dram";
+            resets = <&k3_reset 9 1>;
+            firmware-name = "am62-mcu-m4f0_0-fw";
+            mboxes = <&mailbox0_cluster0>, <&mbox_m4_0>;
+            memory-region = <&mcu_m4fss_dma_memory_region>,
+                            <&mcu_m4fss_memory_region>;
+            ti,sci = <&dmsc>;
+            ti,sci-dev-id = <9>;
+            ti,sci-proc-ids = <0x18 0xff>;
+         };
+    };