From cd185ff20570d68dd4155fe1ed76287ccc9fa486 Mon Sep 17 00:00:00 2001
From: Gustavo Leal <gustavo.leal@toradex.com>
Date: Tue, 21 Jul 2020 16:33:44 -0300
Subject: ARM64: dts: verdin-imx8mm: add m4/rpmsg nodes

This commit adds the Cortex-M4- and RPMsg-related nodes to the base Verdin iMX8M Mini device tree.
---
 .../arm64/boot/dts/freescale/fsl-imx8mm-verdin.dtsi | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8mm-verdin.dtsi
index cb6b6d7287ba..b6b10e2338cc 100755
--- a/arch/arm64/boot/dts/freescale/fsl-imx8mm-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8mm-verdin.dtsi
@@ -7,6 +7,17 @@
 #include "fsl-imx8mm.dtsi"
 
 / {
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		m4_reserved: m4@0x80000000 {
+			no-map;
+			reg = <0 0x80000000 0 0x1000000>;
+		};
+	};
+
 	backlight: backlight {
 		compatible = "pwm-backlight";
 		pinctrl-names = "default";
@@ -354,6 +365,16 @@
 	};
 };
 
+&rpmsg{
+	/*
+	 * 64K for one rpmsg instance:
+	 * --0xb8000000~0xb800ffff: pingpong
+	 */
+	vdev-nums = <1>;
+	reg = <0x0 0xb8000000 0x0 0x10000>;
+	status = "okay";
+};
+
 &gpu {
 	status = "okay";
 };
-- 
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