linux-kernel - [PATCH v5 3/6] arm64: dts: ti: iot2050: Add/enabled mailboxes and carve-outs for R5F cores

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Message-Id: <1776f8be19b39a938d9248fcfc5332b753783c3e.1632657917.git.jan.kiszka@web.de>
Date:   Sun, 26 Sep 2021 14:05:14 +0200
From:   Jan Kiszka <jan.kiszka@....de>
To:     Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Bao Cheng Su <baocheng.su@...mens.com>,
        Chao Zeng <chao.zeng@...mens.com>, Suman Anna <s-anna@...com>
Subject: [PATCH v5 3/6] arm64: dts: ti: iot2050: Add/enabled mailboxes and carve-outs for R5F cores

From: Jan Kiszka <jan.kiszka@...mens.com>

Analogously to the am654-base-board, configure the mailboxes for the two
R5F cores, add them and the already existing memory carve-outs to the
related MCU nodes. Allows to load applications under Linux onto the
cores, e.g. the RTI watchdog firmware.

Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
Reviewed-by: Suman Anna <s-anna@...com>
---
 .../boot/dts/ti/k3-am65-iot2050-common.dtsi   | 26 +++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index 58c8e64d5885..b29537088289 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -658,11 +658,21 @@ &pcie1_ep {
 };

 &mailbox0_cluster0 {
-	status = "disabled";
+	interrupts = <436>;
+
+	mbox_mcu_r5fss0_core0: mbox-mcu-r5fss0-core0 {
+		ti,mbox-tx = <1 0 0>;
+		ti,mbox-rx = <0 0 0>;
+	};
 };

 &mailbox0_cluster1 {
-	status = "disabled";
+	interrupts = <432>;
+
+	mbox_mcu_r5fss0_core1: mbox-mcu-r5fss0-core1 {
+		ti,mbox-tx = <1 0 0>;
+		ti,mbox-rx = <0 0 0>;
+	};
 };

 &mailbox0_cluster2 {
@@ -705,6 +715,18 @@ &mailbox0_cluster11 {
 	status = "disabled";
 };

+&mcu_r5fss0_core0 {
+	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
+			<&mcu_r5fss0_core0_memory_region>;
+	mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core0>;
+};
+
+&mcu_r5fss0_core1 {
+	memory-region = <&mcu_r5fss0_core1_dma_memory_region>,
+			<&mcu_r5fss0_core1_memory_region>;
+	mboxes = <&mailbox0_cluster1 &mbox_mcu_r5fss0_core1>;
+};
+
 &icssg0_mdio {
 	status = "disabled";
 };
--
2.31.1