Hi Andrew,

On 2/7/25 9:56 AM, Andrew Davis wrote:

On 2/6/25 5:51 PM, Judith Mendez wrote:

quoted

From: Devarsh Thakkar <devarsht@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@ti.com>
Signed-off-by: Hari Nagalla <redacted>
Signed-off-by: Judith Mendez <redacted>
---
Changes since v3:
- No change
---
  arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 90 +++++++++++++++++++++++--
  1 file changed, 84 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts 

b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index a6f0d87a50d8a..eaffbab093cc1 100644

--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts

@@ -49,6 +49,42 @@ linux,cma {

              linux,cma-default;
          };
+        c7x_0_dma_memory_region: c7x-dma-memory@99800000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x99800000 0x00 0x100000>;
+            no-map;
+        };
+
+        c7x_0_memory_region: c7x-memory@99900000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x99900000 0x00 0xf00000>;
+            no-map;
+        };
+
+        mcu_r5fss0_core0_dma_memory_region: r5f-dma-memory@9b800000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9b800000 0x00 0x100000>;
+            no-map;
+        };
+
+        mcu_r5fss0_core0_memory_region: r5f-dma-memory@9b900000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9b900000 0x00 0xf00000>;
+            no-map;
+        };
+
+        wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9c800000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9c800000 0x00 0x100000>;
+            no-map;
+        };
+
+        wkup_r5fss0_core0_memory_region: r5f-dma-memory@9c900000 {
+            compatible = "shared-dma-pool";
+            reg = <0x00 0x9c900000 0x00 0x1e00000>;
+            no-map;
+        };
+
          secure_tfa_ddr: tfa@9e780000 {
              reg = <0x00 0x9e780000 0x00 0x80000>;
              alignment = <0x1000>;

@@ -60,12 +96,6 @@ secure_ddr: optee@9e800000 {

              alignment = <0x1000>;
              no-map;
          };
-
-        wkup_r5fss0_core0_memory_region: r5f-dma-memory@9c900000 {
-            compatible = "shared-dma-pool";
-            reg = <0x00 0x9c900000 0x00 0x01e00000>;
-            no-map;
-        };
      };
      opp-table {

@@ -737,3 +767,51 @@ dpi1_out: endpoint {

          };
      };
  };
+
+&mailbox0_cluster0 {

Odd, these mailboxes should have been disabled by default as
they are incomplete without this extra board-level info below.

I'll have to fix that later. For now, could you add
status = "okay"; here. That way they are already here and
I don't have to modify this DT file later (which could
cause a conflict if I do it this cycle).

Sure will do.

~ Judith

Andrew

quoted

+    mbox_r5_0: mbox-r5-0 {
+        ti,mbox-rx = <0 0 0>;
+        ti,mbox-tx = <1 0 0>;
+    };
+};
+
+&mailbox0_cluster1 {
+    mbox_c7x_0: mbox-c7x-0 {
+        ti,mbox-rx = <0 0 0>;
+        ti,mbox-tx = <1 0 0>;
+    };
+};
+
+&mailbox0_cluster2 {
+    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";
+};