diff --git a/arch/arm/dts/k3-j722s-evm-u-boot.dtsi b/arch/arm/dts/k3-j722s-evm-u-boot.dtsi
index 88c4a72db61..6ae76beea3e 100644
--- a/arch/arm/dts/k3-j722s-evm-u-boot.dtsi
+++ b/arch/arm/dts/k3-j722s-evm-u-boot.dtsi
@@ -16,3 +16,7 @@
 &dmsc {
 	bootph-pre-ram;
 };
+
+&main_bcdma {
+	bootph-pre-ram;
+};
diff --git a/arch/arm/dts/k3-j722s-r5-evm.dts b/arch/arm/dts/k3-j722s-r5-evm.dts
index 08286ed792d..286ab50d3da 100644
--- a/arch/arm/dts/k3-j722s-r5-evm.dts
+++ b/arch/arm/dts/k3-j722s-r5-evm.dts
@@ -41,8 +41,8 @@
 		ti,host-id = <36>;
 		ti,secure-host;
 		mbox-names = "rx", "tx";
-		mboxes= <&secure_proxy_main 22>,
-			<&secure_proxy_main 23>;
+		mboxes= <&secure_proxy_main 28>,
+			<&secure_proxy_main 29>;
 		bootph-all;
 	};
 };
@@ -89,3 +89,16 @@
 &wkup_uart0 {
 	status = "okay";
 };
+
+&ospi0 {
+	reg = <0x00 0x0fc40000 0x00 0x100>,
+	      <0x00 0x60000000 0x00 0x08000000>;
+};
+
+&main_bcdma {
+	ti,sci = <&dm_tifs>;
+};
+
+&main_pktdma {
+	ti,sci = <&dm_tifs>;
+};
diff --git a/arch/arm/mach-k3/include/mach/j722s_spl.h b/arch/arm/mach-k3/include/mach/j722s_spl.h
index eab8c511b7c..a91cc82448f 100644
--- a/arch/arm/mach-k3/include/mach/j722s_spl.h
+++ b/arch/arm/mach-k3/include/mach/j722s_spl.h
@@ -24,6 +24,7 @@
 #define BOOT_DEVICE_DFU			0x0A
 #define BOOT_DEVICE_GPMC_NAND		0x0B
 #define BOOT_DEVICE_GPMC_NOR		0x0C
+#define BOOT_DEVICE_FAST_XSPI		0x0D
 #define BOOT_DEVICE_XSPI		0x0E
 #define BOOT_DEVICE_NOBOOT		0x0F
 
diff --git a/arch/arm/mach-k3/j722s/j722s_init.c b/arch/arm/mach-k3/j722s/j722s_init.c
index 0313e1148bc..f8c5c2a5edc 100644
--- a/arch/arm/mach-k3/j722s/j722s_init.c
+++ b/arch/arm/mach-k3/j722s/j722s_init.c
@@ -220,6 +220,8 @@ static u32 __get_primary_bootmedia(u32 devstat)
 		fallthrough;
 	case BOOT_DEVICE_XSPI:
 		fallthrough;
+	case BOOT_DEVICE_FAST_XSPI:
+		fallthrough;
 	case BOOT_DEVICE_SPI:
 		return BOOT_DEVICE_SPI;
 
diff --git a/drivers/mailbox/k3-sec-proxy.c b/drivers/mailbox/k3-sec-proxy.c
index 5eafe46fd4d..6f5ad37919f 100644
--- a/drivers/mailbox/k3-sec-proxy.c
+++ b/drivers/mailbox/k3-sec-proxy.c
@@ -408,7 +408,7 @@ static int k3_sec_proxy_remove(struct udevice *dev)
 	return 0;
 }
 
-static const u32 am6x_valid_threads[] = { 0, 1, 4, 5, 6, 7, 8, 9, 11, 12, 13, 20, 21, 22, 23 };
+static const u32 am6x_valid_threads[] = { 0, 1, 4, 5, 6, 7, 8, 9, 11, 12, 13, 20, 21, 22, 23, 28, 29 };
 
 static const struct k3_sec_proxy_desc am654_desc = {
 	.thread_count = 90,