[PATCH v4 16/34] arm64: dts: ti: k3-am62-verdin: Add missing cfg for TI IPC Firmware

[Beleswar Padhi]

The wkup_r5fss0_core0_memory_region is used to store the text/data
sections of the Device Manager (DM) firmware itself and is necessary for
platform boot. Whereas the wkup_r5fss0_core0_dma_memory_region is used
for allocating the Virtio buffers needed for IPC with the DM core which
could be optional. The labels were incorrectly used in the
k3-am62-verdin.dtsi file. Correct the firmware memory region label.

Currently, only mailbox node is enabled with FIFO assignment for a
single M4F remote core. However, there are no users of the enabled
mailboxes. Add the missing carveouts for WKUP R5F and MCU M4F remote
processors, and enable those by associating to the above carveout and
mailboxes. This config aligns with other AM62 boards and can be
refactored out later.

Signed-off-by: Beleswar Padhi <b-padhi at ti.com>
Tested-by: Hiago De Franco <hiago.franco at toradex.com> # Verdin AM62
---
Cc: Francesco Dolcini <francesco.dolcini at toradex.com>
Cc: Hiago De Franco <hiago.franco at toradex.com>
Cc: Jo_o Paulo Gon_alves <joao.goncalves at toradex.com>
Cc: Stefan Eichenberger <stefan.eichenberger at toradex.com>
Cc: Max Krummenacher <max.krummenacher at toradex.com>
Cc: Andrejs Cainikovs <andrejs.cainikovs at toradex.com>
Requesting for review/test of this patch

v4: Changelog:
1. None

Link to v3:
https://lore.kernel.org/all/20250905051846.1189612-16-b-padhi@ti.com/

v3: Changelog:
1. Changed carveout node names to memory at addr.

Link to v2:
https://lore.kernel.org/all/20250823160901.2177841-16-b-padhi@ti.com/

v2: Changelog:
1. Re-ordered patch from [PATCH 18/33] to [PATCH v2 15/33].
2. Added T/B tag.

Link to v1:
https://lore.kernel.org/all/20250814223839.3256046-19-b-padhi@ti.com/
 arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 43 +++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
index 9384c9a0232a..5ecdd833587e 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
@@ -206,7 +206,25 @@ secure_ddr: optee at 9e800000 {
 			no-map;
 		};
 
-		wkup_r5fss0_core0_dma_memory_region: memory at 9db00000 {
+		mcu_m4fss_dma_memory_region: memory at 9cb00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9cb00000 0x00 0x100000>;
+			no-map;
+		};
+
+		mcu_m4fss_memory_region: memory at 9cc00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9cc00000 0x00 0xe00000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_dma_memory_region: memory at 9da00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9da00000 0x00 0x100000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: memory at 9db00000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0x9db00000 0x00 0xc00000>;
 			no-map;
@@ -1323,6 +1341,29 @@ mbox_m4_0: mbox-m4-0 {
 		ti,mbox-rx = <0 0 0>;
 		ti,mbox-tx = <1 0 0>;
 	};
+
+	mbox_r5_0: mbox-r5-0 {
+		ti,mbox-rx = <2 0 0>;
+		ti,mbox-tx = <3 0 0>;
+	};
+};
+
+&mcu_m4fss {
+	mboxes = <&mailbox0_cluster0 &mbox_m4_0>;
+	memory-region = <&mcu_m4fss_dma_memory_region>,
+			<&mcu_m4fss_memory_region>;
+	status = "okay";
+};
+
+&wkup_r5fss0 {
+	status = "okay";
+};
+
+&wkup_r5fss0_core0 {
+	mboxes = <&mailbox0_cluster0 &mbox_r5_0>;
+	memory-region = <&wkup_r5fss0_core0_dma_memory_region>,
+			<&wkup_r5fss0_core0_memory_region>;
+	status = "okay";
 };
 
 /* Verdin CAN_1 */
-- 
2.34.1