From: Dominik Haller <d.haller@xxxxxxxxx>
Adds a devicetree overlay containing reserved memory regions used
for intercore communication between A53 and M4 cores.
Signed-off-by: Dominik Haller <d.haller@xxxxxxxxx>
Signed-off-by: Andrej Picej <andrej.picej@xxxxxxxxx>
---
arch/arm64/boot/dts/freescale/Makefile | 2 +
.../dts/freescale/imx8mm-phycore-rpmsg.dtso | 55 +++++++++++++++++++
2 files changed, 57 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 99be36a04db9..5bc083a7b778 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..0c61946f0cf8
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-phycore-rpmsg.dtso
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024 PHYTEC Messtechnik GmbH
+ * Author: Dominik Haller <d.haller@xxxxxxxxx>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/imx8mm-clock.h>
+
+&{/} {
+ 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>;
+ };
+};
--
2.34.1
