linux-kernel - [PATCH 1/4] arm64: dts: imx93-phycore-som: Add RPMsg overlay

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250619063954.1730231-2-primoz.fiser@norik.com>
Date: Thu, 19 Jun 2025 08:39:51 +0200
From: Primoz Fiser <primoz.fiser@...ik.com>
To: Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] arm64: dts: imx93-phycore-som: Add RPMsg overlay

Add an overlay used for remote processor inter-core communication
between A55 and M33 cores on the phyCORE-i.MX93 SoM based boards.

Overlay adds the required reserved memory regions and enables the
mailbox unit and the M33 core for RPMsg (Remote Processor Messaging
Framework).

Signed-off-by: Primoz Fiser <primoz.fiser@...ik.com>
---
 arch/arm64/boot/dts/freescale/Makefile        |  4 ++
 .../dts/freescale/imx93-phycore-rpmsg.dtso    | 60 +++++++++++++++++++
 2 files changed, 64 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 0b473a23d120..08a1de299538 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -324,6 +324,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-14x14-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-kontron-bl-osm-s.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-segin.dtb
+
+imx93-phycore-rpmsg-dtbs += imx93-phyboard-nash.dtb imx93-phyboard-segin.dtb imx93-phycore-rpmsg.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx93-phycore-rpmsg.dtb
+
 dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba91xxca.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxca.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxla.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso b/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso
new file mode 100644
index 000000000000..9200113c9ec3
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ * Author: Primoz Fiser <primoz.fiser@...ik.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+
+		vdev0vring0: vdev0vring0@...00000 {
+			reg = <0 0xa4000000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1@...08000 {
+			reg = <0 0xa4008000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring0: vdev1vring0@...10000 {
+			reg = <0 0xa4010000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring1: vdev1vring1@...18000 {
+			reg = <0 0xa4018000 0 0x8000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table@...1e000 {
+			reg = <0 0x2021e000 0 0x1000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer@...20000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0xa4020000 0 0x100000>;
+			no-map;
+		};
+	};
+};
+
+&cm33 {
+	mbox-names = "tx", "rx", "rxdb";
+	mboxes = <&mu1 0 1>,
+		 <&mu1 1 1>,
+		 <&mu1 3 1>;
+	memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
+		 <&vdev1vring0>, <&vdev1vring1>, <&rsc_table>;
+	status = "okay";
+};
+
+&mu1 {
+	status = "okay";
+};
-- 
2.34.1