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From: Lecopzer Chen <lecopzer.chen@mediatek.com>
To: <catalin.marinas@arm.com>
Cc: <lecopzer.chen@mediatek.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>, <mark.rutland@arm.com>,
	<matthias.bgg@gmail.com>, <will@kernel.org>,
	<yj.chiang@mediatek.com>
Subject: Re: [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION
Date: Fri, 18 Dec 2020 13:02:20 +0800	[thread overview]
Message-ID: <20201218050220.25803-1-lecopzer.chen@mediatek.com> (raw)
In-Reply-To: <20201217164911.GB20278@gaia>

Hi Catalin,
 
Thanks for your explanation.
 
> > so there is two points
> > 1. out-of-tree function can't be approved
> >     I totally agree with this :) so we may have a driver upstream in the future.
> 
> It may not be upstreamable if it relies on the old APM interface ;).
> 
> > 2. APM not make sense on arm64
> > Could you please let me konw the reason why APM on ARM64 doesn't make sense?
> 
> It's a very old interface, even on x86 it is disabled in the distro
> kernels. There are more modern alternatives and you should update your
> driver and user space to use them (e.g. /sys/power/).

Got it! I will disscuss with our internal team to update their drivers.

thanks a lot!

BRs,
Lecopzer

  reply	other threads:[~2020-12-18  5:03 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-24  9:01 [PATCH] arm64: Kconfig: Add SYS_SUPPORTS_APM_EMULATION Lecopzer Chen
2020-11-25 10:36 ` Mark Rutland
2020-11-25 11:41   ` Lecopzer Chen
2020-12-16 15:58     ` Catalin Marinas
2020-12-16 16:41       ` Lecopzer Chen
2020-12-17 16:49         ` Catalin Marinas
2020-12-18  5:02           ` Lecopzer Chen [this message]
2020-12-14  9:28   ` Lecopzer Chen

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