linux-kernel - Re: [PATCH] soc: bcm: brcmstb: Remove bare-metal ARM suspend/resume code

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Date:   Mon, 27 Feb 2023 15:43:16 -0300
From:   "Guilherme G. Piccoli" <gpiccoli@...lia.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        linux-arm-kernel@...r.kernel.org
Cc:     drv@...lo.com, ssengar@...rosoft.com,
        kumarpraveen@...ux.microsoft.com, christophe.jaillet@...adoo.fr,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Miaoqian Lin <linmq006@...il.com>, Liang He <windhl@....com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Julia Lawall <Julia.Lawall@...ia.fr>,
        open list <linux-kernel@...r.kernel.org>,
        "moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] soc: bcm: brcmstb: Remove bare-metal ARM suspend/resume
 code

On 27/02/2023 15:38, Florian Fainelli wrote:
> [...]
>>> -static int brcmstb_pm_panic_notify(struct notifier_block *nb,
>>> -		unsigned long action, void *data)
>>> -{
>>> -	writel_relaxed(BRCMSTB_PANIC_MAGIC, ctrl.aon_sram + AON_REG_PANIC);
>>> -
>>> -	return NOTIFY_DONE;
>>> [...]
>>
>> Hi Florian, thanks for the clean-up!
>>
>> I'm curious with the above panic notifier - is it not necessary when
>> PSCI is used?
> 
> This is a bit of long story, but no, it is not necessary.

OK then heh
Glad for the clean-up!