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: <20250821061214.GC7503@francesco-nb>
Date: Thu, 21 Aug 2025 08:12:14 +0200
From: Francesco Dolcini <francesco@...cini.it>
To: Beleswar Padhi <b-padhi@...com>
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 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?