[PATCH 1/4] arm64: dts: imx93-phycore-som: Add RPMsg overlay
Shawn Guo
shawnguo2 at yeah.net
Sun Jul 6 20:36:10 PDT 2025
On Thu, Jun 19, 2025 at 08:39:51AM +0200, Primoz Fiser wrote:
> Add an overlay used for remote processor inter-core communication
> between A55 and M33 cores on the phyCORE-i.MX93 SoM based boards.
>
> Overlay adds the required reserved memory regions and enables the
> mailbox unit and the M33 core for RPMsg (Remote Processor Messaging
> Framework).
>
> Signed-off-by: Primoz Fiser <primoz.fiser at norik.com>
> ---
> arch/arm64/boot/dts/freescale/Makefile | 4 ++
> .../dts/freescale/imx93-phycore-rpmsg.dtso | 60 +++++++++++++++++++
> 2 files changed, 64 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso
>
> diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
> index 0b473a23d120..08a1de299538 100644
> --- a/arch/arm64/boot/dts/freescale/Makefile
> +++ b/arch/arm64/boot/dts/freescale/Makefile
> @@ -324,6 +324,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-14x14-evk.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-kontron-bl-osm-s.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-segin.dtb
> +
> +imx93-phycore-rpmsg-dtbs += imx93-phyboard-nash.dtb imx93-phyboard-segin.dtb imx93-phycore-rpmsg.dtbo
> +dtb-$(CONFIG_ARCH_MXC) += imx93-phycore-rpmsg.dtb
> +
> dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba91xxca.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxca.dtb
> dtb-$(CONFIG_ARCH_MXC) += imx93-tqma9352-mba93xxla.dtb
> diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso b/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso
> new file mode 100644
> index 000000000000..9200113c9ec3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx93-phycore-rpmsg.dtso
> @@ -0,0 +1,60 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2025 PHYTEC Messtechnik GmbH
> + * Author: Primoz Fiser <primoz.fiser at norik.com>
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +&{/} {
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + vdev0vring0: vdev0vring0 at a4000000 {
> + reg = <0 0xa4000000 0 0x8000>;
> + no-map;
> + };
> +
> + vdev0vring1: vdev0vring1 at a4008000 {
> + reg = <0 0xa4008000 0 0x8000>;
> + no-map;
> + };
> +
> + vdev1vring0: vdev1vring0 at a4010000 {
> + reg = <0 0xa4010000 0 0x8000>;
> + no-map;
> + };
> +
> + vdev1vring1: vdev1vring1 at a4018000 {
> + reg = <0 0xa4018000 0 0x8000>;
> + no-map;
> + };
> +
> + rsc_table: rsc-table at 2021e000 {
Can we sort the node in order of unit-address?
Shawn
> + reg = <0 0x2021e000 0 0x1000>;
> + no-map;
> + };
> +
> + vdevbuffer: vdevbuffer at a4020000 {
> + compatible = "shared-dma-pool";
> + reg = <0 0xa4020000 0 0x100000>;
> + no-map;
> + };
> + };
> +};
> +
> +&cm33 {
> + mbox-names = "tx", "rx", "rxdb";
> + mboxes = <&mu1 0 1>,
> + <&mu1 1 1>,
> + <&mu1 3 1>;
> + memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
> + <&vdev1vring0>, <&vdev1vring1>, <&rsc_table>;
> + status = "okay";
> +};
> +
> +&mu1 {
> + status = "okay";
> +};
> --
> 2.34.1
>
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