[PATCH v2 17/22] arm64: dts: ti: k3-am62p5-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: Andrew Davis <afd at ti.com>
Link: https://lore.kernel.org/r/20250502220325.3230653-8-jm@ti.com
Signed-off-by: Nishanth Menon <nm at ti.com>

[ upstream commit: b05a6c145001e99348a2fe33958be912f4eb8d4d ]

(cherry picked from commit ccd74102c4199bb661090168ca5035d8ad438869)
---
 dts/upstream/src/arm64/ti/k3-am62p5-sk.dts | 50 ++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 6 deletions(-)

diff --git a/dts/upstream/src/arm64/ti/k3-am62p5-sk.dts b/dts/upstream/src/arm64/ti/k3-am62p5-sk.dts
index 7cc730e27ce69dc30feb97d68c9cec88b553a4bd..731252d84330b69c7b2911c1216118c02a787569 100644
--- a/dts/upstream/src/arm64/ti/k3-am62p5-sk.dts
+++ b/dts/upstream/src/arm64/ti/k3-am62p5-sk.dts
@@ -49,6 +49,30 @@
 		#size-cells = <2>;
 		ranges;
 
+		mcu_r5fss0_core0_dma_memory_region: mcu-r5fss-dma-memory-region at 9b800000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9b800000 0x00 0x100000>;
+			no-map;
+		};
+
+		mcu_r5fss0_core0_memory_region: mcu-r5fss-memory-region 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-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>;
 			no-map;
@@ -58,12 +82,6 @@
 			reg = <0x00 0x9e800000 0x00 0x01800000>; /* for OP-TEE */
 			no-map;
 		};
-
-		wkup_r5fss0_core0_memory_region: r5f-dma-memory at 9c900000 {
-			compatible = "shared-dma-pool";
-			reg = <0x00 0x9c900000 0x00 0x01e00000>;
-			no-map;
-		};
 	};
 
 	vmain_pd: regulator-0 {
@@ -639,6 +657,26 @@
 	};
 };
 
+&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_cluster1 &mbox_mcu_r5_0>;
+	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
+			<&mcu_r5fss0_core0_memory_region>;
+};
+
 &main_uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&main_uart0_pins_default>;

-- 
2.49.0