[PATCH v2 16/22] arm64: dts: ti: k3-am62a7-sk: Enable IPC with remote processors

[Markus Schneider-Pargmann]

From: Devarsh Thakkar <devarsht 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>
Reviewed-by: Beleswar Padhi <b-padhi at ti.com>
Reviewed-by: Jai Luthra <jai.luthra at ideasonboard.com>
Acked-by: Andrew Davis <afd at ti.com>
Link: https://lore.kernel.org/r/20250502220325.3230653-7-jm@ti.com
Signed-off-by: Nishanth Menon <nm at ti.com>

[ upstream commit: 77c29ebe76d80174d5735b61edd3c95e32a75d2e ]

(cherry picked from commit 2cf6f198463cb250137fc009db599ca93241ef0a)
---
 dts/upstream/src/arm64/ti/k3-am62a7-sk.dts | 96 ++++++++++++++++++++++++++++--
 1 file changed, 90 insertions(+), 6 deletions(-)

diff --git a/dts/upstream/src/arm64/ti/k3-am62a7-sk.dts b/dts/upstream/src/arm64/ti/k3-am62a7-sk.dts
index c65ada5a22abbd88a70e81703c28b7b83461c6c8..59a872413bab1f580610d8c7cc0a0eb2187d7db1 100644
--- a/dts/upstream/src/arm64/ti/k3-am62a7-sk.dts
+++ b/dts/upstream/src/arm64/ti/k3-am62a7-sk.dts
@@ -52,6 +52,42 @@
 			linux,cma-default;
 		};
 
+		c7x_0_dma_memory_region: c7x-dma-memory at 99800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x99800000 0x00 0x100000>;
+			no-map;
+		};
+
+		c7x_0_memory_region: c7x-memory at 99900000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x99900000 0x00 0xf00000>;
+			no-map;
+		};
+
+		mcu_r5fss0_core0_dma_memory_region: r5f-dma-memory at 9b800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9b800000 0x00 0x100000>;
+			no-map;
+		};
+
+		mcu_r5fss0_core0_memory_region: r5f-dma-memory at 9b900000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9b900000 0x00 0xf00000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory at 9c800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9c800000 0x00 0x100000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: r5f-dma-memory at 9c900000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9c900000 0x00 0xf00000>;
+			no-map;
+		};
+
 		secure_tfa_ddr: tfa at 9e780000 {
 			reg = <0x00 0x9e780000 0x00 0x80000>;
 			alignment = <0x1000>;
@@ -63,12 +99,6 @@
 			alignment = <0x1000>;
 			no-map;
 		};
-
-		wkup_r5fss0_core0_memory_region: r5f-dma-memory at 9c900000 {
-			compatible = "shared-dma-pool";
-			reg = <0x00 0x9c900000 0x00 0x01e00000>;
-			no-map;
-		};
 	};
 
 	opp-table {
@@ -782,3 +812,57 @@
 	pinctrl-0 = <&main_epwm1_pins_default>;
 	status = "okay";
 };
+
+&mailbox0_cluster0 {
+	status = "okay";
+
+	mbox_r5_0: mbox-r5-0 {
+		ti,mbox-rx = <0 0 0>;
+		ti,mbox-tx = <1 0 0>;
+	};
+};
+
+&mailbox0_cluster1 {
+	status = "okay";
+
+	mbox_c7x_0: mbox-c7x-0 {
+		ti,mbox-rx = <0 0 0>;
+		ti,mbox-tx = <1 0 0>;
+	};
+};
+
+&mailbox0_cluster2 {
+	status = "okay";
+
+	mbox_mcu_r5_0: mbox-mcu-r5-0 {
+		ti,mbox-rx = <0 0 0>;
+		ti,mbox-tx = <1 0 0>;
+	};
+};
+
+&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>;
+};
+
+&mcu_r5fss0 {
+	status = "okay";
+};
+
+&mcu_r5fss0_core0 {
+	mboxes = <&mailbox0_cluster2>, <&mbox_mcu_r5_0>;
+	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
+			<&mcu_r5fss0_core0_memory_region>;
+};
+
+&c7x_0 {
+	mboxes = <&mailbox0_cluster1>, <&mbox_c7x_0>;
+	memory-region = <&c7x_0_dma_memory_region>,
+			<&c7x_0_memory_region>;
+	status = "okay";
+};

-- 
2.49.0