From: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Date: Tue, 3 Mar 2026 21:01:07 +0000 (+0100)
Subject: arm64: dts: freescale: imx95-toradex-smarc: Support Cortex M7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b7a9871e171e374d208822a02f02aa9d9a4d102;p=thirdparty%2Flinux.git

arm64: dts: freescale: imx95-toradex-smarc: Support Cortex M7

Enable Cortex M7, the vring nodes, a mailbox and reserve DDR memory for
the M7. The remoteproc framework is so capable to load and run the M7
firmware.

Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

diff --git a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi
index f64c05dc50f80..7a73958f6eecc 100644
--- a/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95-toradex-smarc.dtsi
@@ -144,6 +144,14 @@
 		startup-delay-us = <2000>;
 	};
 
+	remoteproc-cm7 {
+		compatible = "fsl,imx95-cm7";
+		mboxes = <&mu7 0 1 &mu7 1 1 &mu7 3 1>;
+		mbox-names = "tx", "rx", "rxdb";
+		memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
+				<&vdev1vring0>, <&vdev1vring1>, <&rsc_table>, <&m7_reserved>;
+	};
+
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -156,6 +164,42 @@
 			alloc-ranges = <0 0x80000000 0 0x7f000000>;
 			linux,cma-default;
 		};
+
+		m7_reserved: memory@80000000 {
+			reg = <0 0x80000000 0 0x1000000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table@88220000 {
+			reg = <0 0x88220000 0 0x1000>;
+			no-map;
+		};
+
+		vdev0vring0: vdev0vring0@88000000 {
+			reg = <0 0x88000000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1@88008000 {
+			reg = <0 0x88008000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring0: vdev1vring0@88010000 {
+			reg = <0 0x88010000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring1: vdev1vring1@88018000 {
+			reg = <0 0x88018000 0 0x8000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer@88020000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x88020000 0 0x100000>;
+			no-map;
+		};
 	};
 };
 
@@ -571,6 +615,10 @@
 	pinctrl-0 = <&pinctrl_uart3>;
 };
 
+&mu7 {
+	status = "okay";
+};
+
 /* SMARC MDIO, shared between all ethernet ports */
 &netc_emdio {
 	pinctrl-names = "default";