Re: [PATCH v3 17/33] arm64: dts: ti: k3-am642-sr-som: Add missing cfg for TI IPC Firmware

Francesco Dolcini
2025-09-05T07:33:19Z

On Fri, Sep 05, 2025 at 10:48:30AM +0530, Beleswar Padhi wrote:
> Currently, only R5F remote processors are enabled for k3-am642-sr SoMs,
> whereas the M4F in MCU domain is disabled. Enable the M4F remote
> processor at board level by reserving memory carveouts and assigning
> mailboxes.
>
> While at it, reserve the MAIN domain timers that are used by R5F remote
> processors for ticks to avoid rproc crashes. This config aligns with
> other AM64 boards and can be refactored out later.
>
> Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
> ---
> Cc: Josua Mayer <josua@solid-run.com>
> Cc: Logan Bristol <logan.bristol@utexas.edu>
> Cc: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
> Requesting for review/test of this patch.
>
> v3: Changelog:
> 1. None
>
> Link to v2:
> https://lore.kernel.org/all/20250823160901.2177841-18-b-padhi@ti.com/
>
> v2: Changelog:
> 1. Re-ordered patch from [PATCH 27/33] to [PATCH v2 17/33].
>
> Link to v1:
> https://lore.kernel.org/all/20250814223839.3256046-28-b-padhi@ti.com/
>
> arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi | 54 +++++++++++++++++++++
> 1 file changed, 54 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi b/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> index 81adae0a8e55..8cb61f831734 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> @@ -162,6 +162,24 @@ main_r5fss1_core1_memory_region: r5f-memory@a3100000 {
> reg = <0x00 0xa3100000 0x00 0xf00000>;
> no-map;
> };
> +
> + mcu_m4fss_dma_memory_region: m4f-dma-memory@a4000000 {

this must be

mcu_m4fss_dma_memory_region: memory@a4000000

the device tree specification requires generic node names, my comment [1]
had nothing specific on verdin am62/am62p.

Francesco

[1] https://lore.kernel.org/all/20250821060629.GB7503@francesco-nb/