linux-kernel - Re: [PATCH 18/33] arm64: dts: ti: k3-am62-verdin: Add missing cfg for TI IPC Firmware

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Message-ID: <0f2060e4-269d-4865-806e-7ace5c3cdabd@ti.com>
Date: Fri, 22 Aug 2025 22:16:19 +0530
From: Beleswar Prasad Padhi <b-padhi@...com>
To: Francesco Dolcini <francesco@...cini.it>
CC: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <afd@...com>,
        <u-kumar1@...com>, <hnagalla@...com>, <jm@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        Hiago De Franco
	<hiago.franco@...adex.com>,
        Jo_o Paulo Gon_alves
	<joao.goncalves@...adex.com>,
        Stefan Eichenberger
	<stefan.eichenberger@...adex.com>,
        Max Krummenacher
	<max.krummenacher@...adex.com>,
        Andrejs Cainikovs
	<andrejs.cainikovs@...adex.com>
Subject: Re: [PATCH 18/33] arm64: dts: ti: k3-am62-verdin: Add missing cfg for
 TI IPC Firmware


On 8/21/2025 11:42 AM, Francesco Dolcini wrote:
> 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.
> Are these memory ranges fine with 512MB DDR memory?


Yes, they are.

DDR memory range: 0x80000000 - 0xA0000000
Carveout range:        0x9CB00000 - 0x9E700000

Thanks,
Beleswar