[PATCH v2 2/4] arm64: dts: imx952-evk: Add CM7 node and related memory nodes

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

Add remoteproc CM7 node and reserved memory regions to enable the
Cortex-M7 remote processor. The reserved memory includes firmware
memory, virtio device vring buffers and a resource table for
inter-processor communication via the MU7 mailbox.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm64/boot/dts/freescale/imx952-evk.dts | 50 ++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx952-evk.dts b/arch/arm64/boot/dts/freescale/imx952-evk.dts
index 62d1c1c7c5013..fec851544fb11 100644
--- a/arch/arm64/boot/dts/freescale/imx952-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx952-evk.dts
@@ -82,6 +82,42 @@ linux_cma: linux,cma {
 			linux,cma-default;
 			reusable;
 		};
+
+		m7_reserved: memory at 80000000 {
+			no-map;
+			reg = <0 0x80000000 0 0x1000000>;
+		};
+
+		vdev0vring0: vdev0vring0 at 88000000 {
+			reg = <0 0x88000000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1 at 88008000 {
+			reg = <0 0x88008000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring0: vdev1vring0 at 88010000 {
+			reg = <0 0x88010000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring1: vdev1vring1 at 88018000 {
+			reg = <0 0x88018000 0 0x8000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer at 88020000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0x88020000 0 0x100000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table at 88220000 {
+			reg = <0 0x88220000 0 0x1000>;
+			no-map;
+		};
 	};
 
 	flexcan1_phy: can-phy0 {
@@ -151,6 +187,16 @@ reg_usb_vbus: regulator-vbus {
 		enable-active-high;
 	};
 
+	remoteproc-cm7 {
+		compatible = "fsl,imx95-cm7";
+		mbox-names = "tx", "rx", "rxdb";
+		mboxes = <&mu7 0 1
+			  &mu7 1 1
+			  &mu7 3 1>;
+		memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
+				<&vdev1vring0>, <&vdev1vring1>, <&rsc_table>, <&m7_reserved>;
+	};
+
 	sound-bt-sco {
 		compatible = "simple-audio-card";
 		simple-audio-card,bitclock-inversion;
@@ -451,6 +497,10 @@ &micfil {
 	status = "okay";
 };
 
+&mu7 {
+	status = "okay";
+};
+
 &sai1 {
 	assigned-clocks = <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>,
 			  <&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>,

-- 
2.34.1