linux-kernel - [PATCH 16/33] arm64: dts: ti: k3-am62p-verdin: Add missing cfg for TI IPC Firmware

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Message-ID: <20250814223839.3256046-17-b-padhi@ti.com>
Date: Fri, 15 Aug 2025 04:08:22 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>
CC: <afd@...com>, <u-kumar1@...com>, <hnagalla@...com>, <jm@...com>,
        <b-padhi@...com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        Emanuele Ghidoli
	<emanuele.ghidoli@...adex.com>,
        Parth Pancholi <parth.pancholi@...adex.com>,
        Jo_o Paulo Gon_alves <joao.goncalves@...adex.com>
Subject: [PATCH 16/33] arm64: dts: ti: k3-am62p-verdin: Add missing cfg for TI IPC Firmware

The wkup_r5fss0_core0_memory_region is used to store the text/data
sections of the Device Manager (DM) firmware itself and is necessary for
platform boot. Whereas the wkup_r5fss0_core0_dma_memory_region is used
for allocating the Virtio buffers needed for IPC with the DM core which
could be optional. The labels were incorrectly used in the
k3-am62p-verdin.dtsi file. Correct the firmware memory region label.

Currently, only mailbox node is enabled with FIFO assignment. However,
there are no users of the enabled mailboxes. Add the missing carveouts
for WKUP and MCU R5F remote processors, and enable those by associating
to the above carveout and mailboxes. This config aligns with other AM62P
boards and can be refactored out later.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
Cc: Francesco Dolcini <francesco.dolcini@...adex.com>
Cc: Emanuele Ghidoli <emanuele.ghidoli@...adex.com>
Cc: Parth Pancholi <parth.pancholi@...adex.com>
Cc: Jo_o Paulo Gon_alves <joao.goncalves@...adex.com>
Requesting for a review/test.

 arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi | 42 ++++++++++++++++++++-
 1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
index 6a04b370d149..0687debf3bbb 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi
@@ -162,7 +162,25 @@ secure_ddr: optee@...00000 {
 			no-map;
 		};
 
-		wkup_r5fss0_core0_memory_region: r5f-dma-memory@...00000 {
+		mcu_r5fss0_core0_dma_memory_region: mcu-r5fss-dma-memory-region@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9b800000 0x00 0x100000>;
+			no-map;
+		};
+
+		mcu_r5fss0_core0_memory_region: mcu-r5fss-memory-region@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9b900000 0x00 0xf00000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x00 0x9c800000 0x00 0x100000>;
+			no-map;
+		};
+
+		wkup_r5fss0_core0_memory_region: r5f-memory@...00000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0x9c900000 0x00 0x01e00000>;
 			no-map;
@@ -848,6 +866,28 @@ mbox_mcu_r5_0: mbox-mcu-r5-0 {
 	};
 };
 
+&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>;
+	status = "okay";
+};
+
+&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>;
+	status = "okay";
+};
+
 &main0_alert {
 	temperature = <95000>;
 };
-- 
2.34.1