Hello,
On Fri, Aug 15, 2025 at 04:08:24AM +0530, Beleswar Padhi wrote:
> The wkup_r5fss0_core0_memory_region is used to store the text/data
> sections of the Device Manager (DM) firmware itself and is necessary for
> platform boot. Whereas the wkup_r5fss0_core0_dma_memory_region is used
> for allocating the Virtio buffers needed for IPC with the DM core which
> could be optional. The labels were incorrectly used in the
> k3-am62-verdin.dtsi file. Correct the firmware memory region label.
>
> Currently, only mailbox node is enabled with FIFO assignment for a
> single M4F remote core. However, there are no users of the enabled
> mailboxes. Add the missing carveouts for WKUP R5F and MCU M4F remote
> processors, and enable those by associating to the above carveout and
> mailboxes. This config aligns with other AM62 boards and can be
> refactored out later.
Thanks for the patch. I was actually preparing to send the same changes.
This is relevant for us because previously we used a DTS overlay to add
the remoteproc functionality, but we also want this enabled in U-Boot.
By adding it to the DTB, it can later be synced with U-Boot so we can
use it there as well.
I tested it on our board, and it works fine in both the kernel and the
bootloader.
>
> Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Verdin AM62
Best regards,
Hiago.
> ---
> Cc: Francesco Dolcini <francesco.dolcini@toradex.com>
> Cc: Hiago De Franco <hiago.franco@toradex.com>
> Cc: Jo_o Paulo Gon_alves <joao.goncalves@toradex.com>
> Cc: Stefan Eichenberger <stefan.eichenberger@toradex.com>
> Cc: Max Krummenacher <max.krummenacher@toradex.com>
> Cc: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
> Requesting for review/test of this patch
>
> arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 43 +++++++++++++++++++++-
> 1 file changed, 42 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> index 4e9a8921c95d..fba6f5c8d099 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
> @@ -206,7 +206,25 @@ secure_ddr: optee@9e800000 {
> no-map;
> };
>
> - wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9db00000 {
> + mcu_m4fss_dma_memory_region: m4f-dma-memory@9cb00000 {
> + compatible = "shared-dma-pool";
> + reg = <0x00 0x9cb00000 0x00 0x100000>;
> + no-map;
> + };
> +
> + mcu_m4fss_memory_region: m4f-memory@9cc00000 {
> + compatible = "shared-dma-pool";
> + reg = <0x00 0x9cc00000 0x00 0xe00000>;
> + no-map;
> + };
> +
> + wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@9da00000 {
> + compatible = "shared-dma-pool";
> + reg = <0x00 0x9da00000 0x00 0x100000>;
> + no-map;
> + };
> +
> + wkup_r5fss0_core0_memory_region: r5f-memory@9db00000 {
> compatible = "shared-dma-pool";
> reg = <0x00 0x9db00000 0x00 0xc00000>;
> no-map;
> @@ -1321,6 +1339,29 @@ mbox_m4_0: mbox-m4-0 {
> ti,mbox-rx = <0 0 0>;
> ti,mbox-tx = <1 0 0>;
> };
> +
> + mbox_r5_0: mbox-r5-0 {
> + ti,mbox-rx = <2 0 0>;
> + ti,mbox-tx = <3 0 0>;
> + };
> +};
> +
> +&mcu_m4fss {
> + mboxes = <&mailbox0_cluster0 &mbox_m4_0>;
> + memory-region = <&mcu_m4fss_dma_memory_region>,
> + <&mcu_m4fss_memory_region>;
> + status = "okay";
> +};
> +
> +&wkup_r5fss0 {
> + status = "okay";
> +};
> +
> +&wkup_r5fss0_core0 {
> + mboxes = <&mailbox0_cluster0 &mbox_r5_0>;
> + memory-region = <&wkup_r5fss0_core0_dma_memory_region>,
> + <&wkup_r5fss0_core0_memory_region>;
> + status = "okay";
> };
>
> /* Verdin CAN_1 */
> --
> 2.34.1
>
>