[PATCH v2 7/9] arm64: dts: ti: k3-am62x-sk-common: Enable ipc with remote processors

[Judith Mendez]

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>
---
Changes since v1:
- add patches 5-9 to enable ipc and complete device nodes
---
 .../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 32 ++++++++++++++++---
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index 2f129e8cd5b9f..649b177cc19f2 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -48,6 +48,18 @@ ramoops at 9ca00000 {
 			pmsg-size = <0x8000>;
 		};
 
+		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory at 9da00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9da00000 0x00 0x00100000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: r5f-memory at 9db00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9db00000 0x00 0x00c00000>;
+			no-map;
+		};
+
 		/* global cma region */
 		linux,cma {
 			compatible = "shared-dma-pool";
@@ -80,11 +92,6 @@ secure_ddr: optee at 9e800000 {
 			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 {
@@ -478,6 +485,11 @@ 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 {
@@ -487,6 +499,16 @@ &mcu_m4fss {
 	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";
-- 
2.48.0