Re: [PATCH v7 3/3] arm64: dts: freescale: add DT overlay for MX95-15x15-FRDM RPMSG usage

[Mathieu Poirier]

On Tue, Oct 20, 2026 at 12:50:23PM -0400, Frank.Li@xxxxxxxxxxx wrote:
> From: Laurentiu Mihalcea <laurentiu.mihalcea@xxxxxxx>
> 
> Move related memory region to overlay files.
> 
> 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>
> Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
>  arch/arm64/boot/dts/freescale/Makefile             |  3 +
>  .../boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso | 81 ++++++++++++++++++++++
>  arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts | 31 ---------

I will need an R-b from Sascha to merge the above files, otherwise they will
have to be resent separately.

Thanks,
Mathieu

>  3 files changed, 84 insertions(+), 31 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index a80cccf34eb56..f3b19f3b1488e 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -960,6 +960,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx943-evk-mqs.dtb
>  dtb-$(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
> @@ -984,6 +985,8 @@ 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..c3deb277edabf
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso
> @@ -0,0 +1,81 @@
> +// 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>,
> +				<&vdev1vring0>, <&vdev1vring1>,
> +				<&rsc_table>;
> +		memory-region-names = "vdev0buffer",
> +				      "vdev0vring0", "vdev0vring1",
> +				      "vdev1vring0", "vdev1vring1",
> +				      "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;
> +		};
> +
> +		vdev1vring0: memory@88010000 {
> +			reg = <0 0x88010000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		vdev1vring1: memory@88018000 {
> +			reg = <0 0x88018000 0 0x8000>;
> +			no-map;
> +		};
> +
> +		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";
> +};
> diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts
> index f82e149323d34..3ab679e5a4740 100644
> --- a/arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts
> +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts
> @@ -189,37 +189,6 @@ linux_cma: linux,cma {
>  			linux,cma-default;
>  		};
>  
> -		vdev0vring0: vdev0vring0@88000000 {
> -			reg = <0 0x88000000 0 0x8000>;
> -			no-map;
> -		};
> -
> -		vdev0vring1: vdev0vring1@88008000 {
> -			reg = <0 0x88008000 0 0x8000>;
> -			no-map;
> -		};
> -
> -		vdev1vring0: vdev1vring0@88010000 {
> -			reg = <0 0x88010000 0 0x8000>;
> -			no-map;
> -		};
> -
> -		vdev1vring1: vdev1vring1@88018000 {
> -			reg = <0 0x88018000 0 0x8000>;
> -			no-map;
> -		};
> -
> -		vdev0buffer: vdev0buffer@88020000 {
> -			compatible = "shared-dma-pool";
> -			reg = <0 0x88020000 0 0x100000>;
> -			no-map;
> -		};
> -
> -		rsc_table: rsc-table@88220000 {
> -			reg = <0 0x88220000 0 0x1000>;
> -			no-map;
> -		};
> -
>  		vpu_boot: memory@a0000000 {
>  			reg = <0 0xa0000000 0 0x100000>;
>  			no-map;
> 
> -- 
> 2.43.0
>