[PATCH 15/19] arm64: dts: ti: k3-am62x-sk-common: Enable IPC with remote processors

[Markus Schneider-Pargmann]

From: Hari Nagalla <hnagalla at ti.com>

For each remote proc, reserve memory for IPC and bind the mailbox
assignments. Two memory regions are reserved for each remote processor.
The first region of 1MB of memory is used for Vring shared buffers
and the second region is used as external memory to the remote processor
for the resource table and for tracebuffer allocations.

Signed-off-by: Devarsh Thakkar <devarsht at ti.com>
Signed-off-by: Hari Nagalla <hnagalla at ti.com>
Signed-off-by: Judith Mendez <jm at ti.com>
Link: https://lore.kernel.org/r/20250210221530.1234009-8-jm@ti.com
Signed-off-by: Markus Schneider-Pargmann <msp at baylibre.com>
---
 dts/upstream/src/arm64/ti/k3-am62x-sk-common.dtsi | 35 +++++++++++++++++++----
 1 file changed, 29 insertions(+), 6 deletions(-)

diff --git a/dts/upstream/src/arm64/ti/k3-am62x-sk-common.dtsi b/dts/upstream/src/arm64/ti/k3-am62x-sk-common.dtsi
index 6957b3e44c82f169e77aee94d19c709ccc1ff610..816d9fca27a8e288c4eb45d781a5cad86765574d 100644
--- a/dts/upstream/src/arm64/ti/k3-am62x-sk-common.dtsi
+++ b/dts/upstream/src/arm64/ti/k3-am62x-sk-common.dtsi
@@ -68,6 +68,18 @@
 			no-map;
 		};
 
+		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory at 9da00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9da00000 0x00 0x100000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: r5f-memory at 9db00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9db00000 0x00 0xc00000>;
+			no-map;
+		};
+
 		secure_tfa_ddr: tfa at 9e780000 {
 			reg = <0x00 0x9e780000 0x00 0x80000>;
 			alignment = <0x1000>;
@@ -79,12 +91,6 @@
 			alignment = <0x1000>;
 			no-map;
 		};
-
-		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory at 9db00000 {
-			compatible = "shared-dma-pool";
-			reg = <0x00 0x9db00000 0x00 0xc00000>;
-			no-map;
-		};
 	};
 
 	leds {
@@ -470,10 +476,17 @@
 };
 
 &mailbox0_cluster0 {
+	status = "okay";
+
 	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 {
@@ -483,6 +496,16 @@
 	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>;
+};
+
 &usbss0 {
 	bootph-all;
 	status = "okay";

-- 
2.47.2