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Date:   Wed, 19 Apr 2023 11:02:14 +0100
From:   Sudeep Holla <sudeep.holla@arm.com>
To:     "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
Cc:     catalin.marinas@arm.com, will@kernel.org, peterz@infradead.org,
        jpoimboe@kernel.org, rafael.j.wysocki@intel.com,
        vschneid@redhat.com, ben-linux@fluff.org, Pierre.Gondois@arm.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Peng Fan <peng.fan@nxp.com>
Subject: Re: [PATCH] arm64: kernel: smp: ignore disabled cpu node
Message-ID: <20230419100214.x6y6jgpvnupmgplr@bogus>
References: <20230419094039.3140521-1-peng.fan@oss.nxp.com>
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On Wed, Apr 19, 2023 at 05:40:39PM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@nxp.com>
> 
> If the cpu node is set disabled in device tree, we should ignore the
> node. i.MX8MP has some variants, which have one or two or four A53 cores.
> The current imx8mp device tree use the full feature SoC. With such
> device tree to bring the variant with one or two A53 cores will cause
> issue.
>
> The firmware will update the status property, and kernel will check the
> property before bring up the core.
>

IIRC it has been discussed in the past[1][2], has anything changed now ?

--
Regards,
Sudeep

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2013-June/174324.html
[2] https://yhbt.net/lore/all/1524697712-20208-1-git-send-email-rokhanna@nvidia.com/