[PATCH 1/2] arm64: dts: imx8mq: add remoteproc m4 support

[Dong Aisheng]

Add cm4 remoteproc which supports rpmsg naming service.
It needs vdevbuffer and a pair of vrings and 16MB reserved memory.

Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
---
 arch/arm64/boot/dts/freescale/Makefile        |  1 +
 .../boot/dts/freescale/imx8mq-evk-rpmsg.dts   | 72 +++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mq-evk-rpmsg.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 4b4785d86324..687ad9d68a85 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -49,6 +49,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-rdk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk-rpmsg.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-hummingboard-pulse.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-kontron-pitx-imx8m.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-librem5-devkit.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-evk-rpmsg.dts b/arch/arm64/boot/dts/freescale/imx8mq-evk-rpmsg.dts
new file mode 100644
index 000000000000..4a8911087e5f
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mq-evk-rpmsg.dts
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2019-2021 NXP
+ */
+
+#include "imx8mq-evk.dts"
+
+/ {
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		vdev0vring0: vdev0vring0 at b8000000 {
+			reg = <0 0xb8000000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1 at b8008000 {
+			reg = <0 0xb8008000 0 0x8000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table at b80ff000 {
+			reg = <0 0xb80ff000 0 0x1000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer at b8400000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0xb8400000 0 0x100000>;
+			no-map;
+		};
+
+		remoteproc at 80000000 {
+			reg = <0 0x80000000 0 0x1000000>;
+			no-map;
+		};
+	};
+
+	imx8mq-cm4 {
+		compatible = "fsl,imx8mq-cm4";
+		clocks = <&clk IMX8MQ_CLK_M4_DIV>;
+		mbox-names = "tx", "rx", "rxdb";
+		mboxes = <&mu 0 1
+			  &mu 1 1
+			  &mu 3 1>;
+		memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
+				<&rsc_table>;
+		syscon = <&src>;
+	};
+};
+
+/*
+ * Below devices are allocated on remoteproc
+ */
+
+&i2c2 {
+	status = "disabled";
+};
+
+&pwm4 {
+	status = "disabled";
+};
+
+&tmu {
+	status = "disabled";
+};
+
+&uart2 {
+	status = "disabled";
+};
-- 
2.25.1