Reserve a shared memory region for rpmsg eth communication and add it to
the remote proc device `main_r5fss0_core0`.

Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am642-evm.dts | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index e01866372293..6e8e2c39146b 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -61,7 +61,13 @@ main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
 
 		main_r5fss0_core0_memory_region: r5f-memory@a0100000 {
 			compatible = "shared-dma-pool";
-			reg = <0x00 0xa0100000 0x00 0xf00000>;
+			reg = <0x00 0xa0100000 0x00 0x300000>;
+			no-map;
+		};
+
+		main_r5fss0_core0_memory_region_shm: r5f-shm-memory@a0400000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0xa0400000 0x00 0xc00000>;
 			no-map;
 		};
 
@@ -767,7 +773,8 @@ mbox_m4_0: mbox-m4-0 {
 &main_r5fss0_core0 {
 	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
 	memory-region = <&main_r5fss0_core0_dma_memory_region>,
-			<&main_r5fss0_core0_memory_region>;
+			<&main_r5fss0_core0_memory_region>,
+			<&main_r5fss0_core0_memory_region_shm>;
 };
 
 &main_r5fss0_core1 {
-- 
2.34.1