MLK-23215-2 dts: arm64: imx8mp: add the rpmsg support

Add the RPMSG support on iMX8MP EVK board.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Andy Duan <fugang.duan@nxp.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk-rpmsg.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk-rpmsg.dts
new file mode 100644
index 000000000000..97a77187e686
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk-rpmsg.dts
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2020 NXP
+ */
+
+/dts-v1/;
+
+#include "imx8mp-evk.dts"
+
+/ {
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		m4_reserved: m4@0x80000000 {
+			no-map;
+			reg = <0 0x80000000 0 0x1000000>;
+		};
+
+		rpmsg_reserved:rpmsg@0xb8000000 {
+			no-map;
+			reg = <0 0xb8000000 0 0x400000>;
+		};
+
+		rpmsg_dma_reserved:rpmsg_dma@0xb8400000 {
+			compatible = "shared-dma-pool";
+			no-map;
+			reg = <0 0xb8400000 0 0x100000>;
+		};
+	};
+};
+
+/*
+ * ATTENTION: M7 may use IPs like below
+ * ECSPI0/ECSPI2, FLEXCAN, GPIO1/GPIO5, GPT1, I2C3, I2S3, WDOG1, UART4,
+ * PWM4, SDMA1/SDMA2
+ */
+&ecspi2 {
+	status = "disabled";
+};
+
+&flexcan1 {
+	status = "disabled";
+};
+
+&flexspi {
+	status = "disabled";
+};
+
+&i2c3 {
+	status = "disabled";
+};
+
+&pwm4{
+	status = "disabled";
+};
+
+&rpmsg{
+	/*
+	 * 64K for one rpmsg instance:
+	 * --0xb8000000~0xb800ffff: pingpong
+	 */
+	vdev-nums = <1>;
+	reg = <0x0 0xb8000000 0x0 0x10000>;
+	memory-region = <&rpmsg_dma_reserved>;
+	status = "okay";
+};
+
+&sdma1{
+	status = "disabled";
+};
+
+&sdma2{
+	status = "disabled";
+};
+
+&uart4 {
+	status = "disabled";
+};
+
+&wdog1 {
+	status = "disabled";
+};