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diff --git a/Bindings/mailbox/ti,secure-proxy.yaml b/Bindings/mailbox/ti,secure-proxy.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mailbox/ti,secure-proxy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments' Secure Proxy
+
+maintainers:
+ - Nishanth Menon <nm@ti.com>
+
+description: |
+ The Texas Instruments' secure proxy is a mailbox controller that has
+ configurable queues selectable at SoC(System on Chip) integration. The
+ Message manager is broken up into different address regions that are
+ called "threads" or "proxies" - each instance is unidirectional and is
+ instantiated at SoC integration level by system controller to indicate
+ receive or transmit path.
+
+properties:
+ $nodename:
+ pattern: "^mailbox@[0-9a-f]+$"
+
+ compatible:
+ const: ti,am654-secure-proxy
+
+ "#mbox-cells":
+ const: 1
+ description:
+ Contains the secure proxy thread ID used for the specific transfer path.
+
+ reg-names:
+ items:
+ - const: target_data
+ - const: rt
+ - const: scfg
+
+ reg:
+ minItems: 3
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 100
+ items:
+ pattern: "^rx_[0-9]{3}$"
+ description:
+ Contains the interrupt name information for the Rx interrupt path for
+ secure proxy thread in the form 'rx_<PID>'.
+
+ interrupts:
+ minItems: 1
+ maxItems: 100
+ description:
+ Contains the interrupt information for the Rx interrupt path for secure
+ proxy.
+
+required:
+ - compatible
+ - reg-names
+ - reg
+ - interrupt-names
+ - interrupts
+ - "#mbox-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ secure_proxy: mailbox@32c00000 {
+ compatible = "ti,am654-secure-proxy";
+ #mbox-cells = <1>;
+ reg-names = "target_data", "rt", "scfg";
+ reg = <0x32c00000 0x100000>,
+ <0x32400000 0x100000>,
+ <0x32800000 0x100000>;
+ interrupt-names = "rx_011";
+ interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+ };