linux-kernel - Re: [PATCH] arm64: dts: ti: k3-am642-evm: Add dt overlay to disable icssg for Linux

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Message-ID: <613421dd-ff8f-414f-837c-a43912384336@ti.com>
Date: Sun, 3 Nov 2024 11:36:34 +0530
From: Vignesh Raghavendra <vigneshr@...com>
To: MD Danish Anwar <danishanwar@...com>, <nm@...com>
CC: <conor+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <robh+dt@...nel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <kristo@...nel.org>, <srk@...com>, Roger Quadros <rogerq@...nel.org>
Subject: Re: [PATCH] arm64: dts: ti: k3-am642-evm: Add dt overlay to disable
 icssg for Linux



On 30/10/24 17:14, MD Danish Anwar wrote:
> Add k3-am642-evm-icssg1-disable.dtso overlay file that disables
> icssg1-eth from Linux so that icssg peripherals can be used by
> RTOS or some other OS running on R5 core.
> 

NACK,

Firstly, you disable more than ICSSG (eg OSPI why?)

Secondly, if we keep introducing a "disable-xxx" DT overlay to disable
every other component in use by RTOS on R5 (which changes per customer
whims) then we will have explosion of dtso

If there is a corresponding firmware in linux-firmware.git that solves
need of a specific end equipment or usecase, then we can talk.

Regards
Vignesh

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