[PATCH v8 08/11] arm64: dts: ti: k3-am62x-sk-common: Enable IPC with remote processors

Judith Mendez
2025-05-02T22:03:45Z

From: Hari Nagalla <hnagalla@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 <hnagalla@ti.com>
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
---
.../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 34 ++++++++++++++++---
1 file changed, 29 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 20d1437f253d..59aa09a0bf8e 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -70,6 +70,18 @@ mcu_m4fss_memory_region: m4f-memory@9cc00000 {
no-map;
};

+ wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9da00000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0x9da00000 0x00 0x100000>;
+ no-map;
+ };
+
+ wkup_r5fss0_core0_memory_region: r5f-memory@9db00000 {
+ compatible = "shared-dma-pool";
+ reg = <0x00 0x9db00000 0x00 0xc00000>;
+ no-map;
+ };
+
secure_tfa_ddr: tfa@9e780000 {
reg = <0x00 0x9e780000 0x00 0x80000>;
alignment = <0x1000>;
@@ -82,11 +94,6 @@ secure_ddr: optee@9e800000 {
no-map;
};

- wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9db00000 {
- compatible = "shared-dma-pool";
- reg = <0x00 0x9db00000 0x00 0xc00000>;
- no-map;
- };
};

leds {
@@ -495,10 +502,17 @@ cpsw3g_phy0: ethernet-phy@0 {
};

&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 {
@@ -508,6 +522,16 @@ &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";
--
2.49.0