[v3,13/15] arm64: dts: imx8mm-phycore-som: Add overlay for rproc

Commit Message

Andrej Picej Feb. 18, 2025, 7:41 a.m. UTC

From: Dominik Haller <[e-mail]>

Adds a devicetree overlay containing reserved memory regions used
for intercore communication between A53 and M4 cores.

Signed-off-by: Dominik Haller <[e-mail]>
Signed-off-by: Andrej Picej <[e-mail]>
---
Changes in v3:
- updated copyright year,
- added address-cells and size-cells to the root node to fix a dts
  check warning.
---
 arch/arm64/boot/dts/freescale/Makefile        |  2 +
 .../dts/freescale/imx8mm-phycore-rpmsg.dtso   | 58 +++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso

Patch

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 7e0fef7ed9de..a10c8b5c2c4a 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -125,9 +125,11 @@  dtb-$(CONFIG_ARCH_MXC) += imx8mm-phyboard-polis-rdk.dtb
 
 imx8mm-phyboard-polis-peb-av-10-dtbs += imx8mm-phyboard-polis-rdk.dtb imx8mm-phyboard-polis-peb-av-10.dtbo
 imx8mm-phyboard-polis-peb-eval-01-dtbs += imx8mm-phyboard-polis-rdk.dtb imx8mm-phyboard-polis-peb-eval-01.dtbo
+imx8mm-phycore-rpmsg-dtbs += imx8mm-phyboard-polis-rdk.dtb imx8mm-phycore-rpmsg.dtbo
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-phyboard-polis-peb-av-10.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-phyboard-polis-peb-eval-01.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-phycore-rpmsg.dtb
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-phygate-tauri-l.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-prt8mm.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso b/arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso
new file mode 100644
index 000000000000..43d5905f3d72
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso
@@ -0,0 +1,58 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ * Author: Dominik Haller <[e-mail]>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/imx8mm-clock.h>
+
+&{/} {
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		m4_reserved: m4@80000000 {
+			reg = <0 0x80000000 0 0x1000000>;
+			no-map;
+		};
+
+		vdev0vring0: vdev0vring0@b8000000 {
+			reg = <0 0xb8000000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1@b8008000 {
+			reg = <0 0xb8008000 0 0x8000>;
+			no-map;
+		};
+
+		rsc_table: rsc_table@b80ff000 {
+			reg = <0 0xb80ff000 0 0x1000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer@b8400000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0xb8400000 0 0x100000>;
+			no-map;
+		};
+	};
+
+	core-m4 {
+		compatible = "fsl,imx8mm-cm4";
+		clocks = <&clk IMX8MM_CLK_M4_DIV>;
+		mboxes = <&mu 0 1
+			&mu 1 1
+			&mu 3 1>;
+		mbox-names = "tx", "rx", "rxdb";
+		memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>, <&rsc_table>;
+		syscon = <&src>;
+	};
+};