linux-kernel - Re: [PATCH] cpufreq: loongson3: Use raw_smp_processor_id() in do_service

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Message-ID: <CAAhV-H7RF8yXHacfq0nj-QTNXmZrRKG4xhHav66ZPg0SdGT64w@mail.gmail.com>
Date: Thu, 29 Aug 2024 16:34:49 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Xi Ruoyao <xry111@...111.site>
Cc: Huacai Chen <chenhuacai@...ngson.cn>, "Rafael J . Wysocki" <rafael@...nel.org>, 
	Viresh Kumar <viresh.kumar@...aro.org>, loongarch@...ts.linux.dev, 
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Xuerui Wang <kernel@...0n.name>, Jiaxun Yang <jiaxun.yang@...goat.com>, 
	Binbin Zhou <zhoubinbin@...ngson.cn>
Subject: Re: [PATCH] cpufreq: loongson3: Use raw_smp_processor_id() in do_service_request()

On Thu, Aug 29, 2024 at 3:33 PM Xi Ruoyao <xry111@...111.site> wrote:
>
> On Wed, 2024-08-28 at 21:55 +0800, Huacai Chen wrote:
> > > Do I need to modify some firmware setting to make it work?
> > You should update your firmware.
>
> I've already updated to UDK2018-3A6000-
> 7A2000_EVB_V4.0.05756_prestable2405_0523dbg.fd on a XA61200 before
> trying CPUFreq.
>
> And I also tried enabling DVFS in the firmware setting, and disabling
> the overclocking.  Both didn't work.
Hmm, current firmware with DVFS can only cooperate with the old
CPUFreq driver in old-world kernels. New firmware which can cooperate
with the upstream CPUFreq driver hasn't been released yet.

Huacai

>
> --
> Xi Ruoyao <xry111@...111.site>
> School of Aerospace Science and Technology, Xidian University