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Message-ID: <20240402131658.GA31963@lst.de>
Date: Tue, 2 Apr 2024 15:16:58 +0200
From: Christoph Hellwig <hch@....de>
To: Werner Sembach <wse@...edocomputers.com>
Cc: Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
	Georg Gottleuber <ggo@...edocomputers.com>,
	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvme-pci: Add sleep quirk for Samsung 990 Evo

On Thu, Mar 28, 2024 at 02:09:22PM +0100, Werner Sembach wrote:
> From: Georg Gottleuber <ggo@...edocomputers.com>
> 
> On some TUXEDO platforms, a Samsung 990 Evo NVMe leads to a high
> power consumption in s2idle sleep (2-3 watts).
> 
> This patch applies 'Force No Simple Suspend' quirk to achieve a
> sleep with a lower power consumption, typically around 0.5 watts.

Does this only apply to a specific SSD or all SSDs on this platform?
How do these platforms even get into the conditional?  Probably
through acpi_storage_d3 setting, which probably is set incorrectly
for the platform?  Any chance to just fix that?


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