arm: dts: Introduce J722S U-Boot dts files

Include the uboot device tree files needed to boot the board.

Co-developed-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
diff --git a/arch/arm/dts/k3-j722s-r5-evm.dts b/arch/arm/dts/k3-j722s-r5-evm.dts
new file mode 100644
index 0000000..aff83cd
--- /dev/null
+++ b/arch/arm/dts/k3-j722s-r5-evm.dts
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * J722S EVM dts file for R5 SPL
+ * Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include "k3-j722s-evm.dts"
+#include "k3-j722s-evm-u-boot.dtsi"
+
+#include "k3-j722s-ddr-lp4-50-3733.dtsi"
+#include "k3-am62a-ddr.dtsi"
+
+/ {
+	aliases {
+		remoteproc0 = &sysctrler;
+		remoteproc1 = &a53_0;
+		serial0 = &wkup_uart0;
+		serial2 = &main_uart0;
+	};
+
+	a53_0: a53@0 {
+		compatible = "ti,am654-rproc";
+		reg = <0x00 0x00a90000 0x00 0x10>;
+		power-domains = <&k3_pds 61 TI_SCI_PD_EXCLUSIVE>,
+			<&k3_pds 135 TI_SCI_PD_EXCLUSIVE>,
+			<&k3_pds 166 TI_SCI_PD_EXCLUSIVE>;
+		resets = <&k3_reset 135 0>;
+		clocks = <&k3_clks 61 0>;
+		assigned-clocks = <&k3_clks 61 0>, <&k3_clks 135 0>;
+		assigned-clock-parents = <&k3_clks 61 2>;
+		assigned-clock-rates = <200000000>, <1200000000>;
+		ti,sci = <&dmsc>;
+		ti,sci-proc-id = <32>;
+		ti,sci-host-id = <10>;
+		bootph-all;
+	};
+
+	dm_tifs: dm-tifs {
+		compatible = "ti,j721e-dm-sci";
+		ti,host-id = <36>;
+		ti,secure-host;
+		mbox-names = "rx", "tx";
+		mboxes= <&secure_proxy_main 22>,
+			<&secure_proxy_main 23>;
+		bootph-all;
+	};
+};
+
+&dmsc {
+	mboxes= <&secure_proxy_main 0>,
+		<&secure_proxy_main 1>,
+		<&secure_proxy_main 0>;
+	mbox-names = "rx", "tx", "notify";
+	ti,host-id = <35>;
+	ti,secure-host;
+};
+
+&cbass_main {
+	sa3_secproxy: secproxy@44880000 {
+		compatible = "ti,am654-secure-proxy";
+		#mbox-cells = <1>;
+		reg = <0x00 0x44880000 0x00 0x20000>,
+		      <0x00 0x44860000 0x00 0x20000>,
+		      <0x00 0x43600000 0x00 0x10000>;
+		reg-names = "rt", "scfg", "target_data";
+		bootph-all;
+	};
+
+	sysctrler: sysctrler {
+		compatible = "ti,am654-system-controller";
+		mboxes= <&secure_proxy_main 1>,
+			<&secure_proxy_main 0>,
+			<&sa3_secproxy 0>;
+		mbox-names = "tx", "rx", "boot_notify";
+		bootph-all;
+	};
+};
+
+/* WKUP UART0 is used for DM firmware logs */
+&wkup_uart0 {
+	status = "okay";
+};