Re: [PATCH v4 4/4] arm64: dts: freescale: add DT overlay for MX95-15x15-FRDM RPMSG usage

[Peng Fan]

On Thu, Sep 17, 2026 at 02:19:45PM -0400, Frank.Li@xxxxxxxxxxx wrote:
>From: Laurentiu Mihalcea <laurentiu.mihalcea@xxxxxxx>
>
>Add RPMSG DT overlay for the MX95-15x15-FRDM board. This overlay is meant
>to be used with the mx95evkrpmsg system manager configuration for
>remoteproc and audio over rpmsg-usecases.
>
>Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxx>
>Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@xxxxxxx>
>Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
>---
> arch/arm64/boot/dts/freescale/Makefile             |  3 +
> .../boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso | 67 ++++++++++++++++++++++
> 2 files changed, 70 insertions(+)
>
>diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
>index 95ae85ab4adf5..3f98132f5a32f 100644
>--- a/arch/arm64/boot/dts/freescale/Makefile
>+++ b/arch/arm64/boot/dts/freescale/Makefile
>@@ -707,6 +707,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx943-evk-sdwifi.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-ab2.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-frdm.dtb
>+dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-frdm-rpmsg.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk-sof.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-frdm-pro.dtb
>@@ -729,6 +730,8 @@ dtb-$(CONFIG_ARCH_MXC) += imx95-verdin-wifi-mallow.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-verdin-wifi-yavia.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx95-verdin-wifi-zinnia.dtb
> 
>+imx95-15x15-frdm-rpmsg-dtbs = imx95-15x15-frdm.dtb imx95-15x15-frdm-rpmsg.dtbo
>+
> imx95-15x15-evk-pcie-dtbs += imx95-15x15-evk.dtb imx-m2-pcie.dtbo
> dtb-$(CONFIG_ARCH_MXC) += imx95-15x15-evk-pcie.dtb
> 
>diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso b/arch/arm64/boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso
>new file mode 100644
>index 0000000000000..bc02864c6f88e
>--- /dev/null
>+++ b/arch/arm64/boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso
>@@ -0,0 +1,67 @@
>+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>+/*
>+ * Copyright 2026 NXP
>+ *
>+ * This DT overlay is meant to be used alongside the mx95evkrpmsg SM
>+ * configuration for remoteproc and audio over rpmsg.
>+ */
>+
>+/dts-v1/;
>+/plugin/;
>+
>+&{/} {
>+	remoteproc-cm7 {
>+		compatible = "fsl,imx95-cm7";
>+		mboxes = <&mu7 0 1>, <&mu7 1 1>, <&mu7 3 1>;
>+		mbox-names = "tx", "rx", "rxdb";
>+		memory-region = <&vdev0buffer>, <&vdev0vring0>,
>+				<&vdev0vring1>, <&rsc_table>;
>+		memory-region-names = "vdev0buffer", "vdev0vring0",
>+				      "vdev0vring1", "rsc-table";
>+	};
>+
>+	reserved-memory {
>+		#address-cells = <2>;
>+		#size-cells = <2>;
>+
>+		vdev0vring0: memory@88000000 {
>+			reg = <0 0x88000000 0 0x8000>;
>+			no-map;
>+		};
>+
>+		vdev0vring1: memory@88008000 {
>+			reg = <0 0x88008000 0 0x8000>;
>+			no-map;
>+		};

vdev1 should be put here, I think.

Regards
Peng

>+
>+		vdev0buffer: memory@88020000 {
>+			compatible = "shared-dma-pool";
>+			reg = <0 0x88020000 0 0x100000>;
>+			no-map;
>+		};
>+
>+		rsc_table: memory@88220000 {
>+			reg = <0 0x88220000 0 0x1000>;
>+			no-map;
>+		};
>+	};
>+
>+	sound-micfil {
>+		status = "disabled";
>+	};
>+};
>+
>+&edma1 {
>+	/* reserved for M7 */
>+	dma-channel-mask = <0x40>;
>+};
>+
>+&edma2 {
>+	/* reserved for M7 and V2X */
>+	dma-channel-mask = <0xf>;
>+};
>+
>+&micfil {
>+	/* reserved for M7 */
>+	status = "reserved";
>+};
>
>-- 
>2.43.0
>
>