linux-kernel - [PATCH] PCI/ASPM: Enable only L0s and L1 for devicetree platforms

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Message-ID: <3aa95b26-7801-476e-840f-5976b0ee11c1@xenosoft.de>
Date: Mon, 27 Oct 2025 18:12:24 +0100
From: Christian Zigotzky <chzigotzky@...osoft.de>
To: Bjorn Helgaas <helgaas@...nel.org>, Johan Hovold <johan@...nel.org>
Cc: linux-pci@...r.kernel.org,
 Manivannan Sadhasivam <manivannan.sadhasivam@....qualcomm.com>,
 FUKAUMI Naoki <naoki@...xa.com>, Herve Codina <herve.codina@...tlin.com>,
 Diederik de Haas <diederik@...ow-tech.com>, Dragan Simic
 <dsimic@...jaro.org>, linuxppc-dev@...ts.ozlabs.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Bjorn Helgaas <bhelgaas@...gle.com>, Shawn Lin <shawn.lin@...k-chips.com>,
 Frank Li <Frank.li@....com>, "R.T.Dickinson" <rtd2@...a.co.nz>,
 mad skateman <madskateman@...il.com>, hypexed@...oo.com.au
Subject: [PATCH] PCI/ASPM: Enable only L0s and L1 for devicetree platforms

Hi All,

I activated CONFIG_PCIEASPM and CONFIG_PCIEASPM_DEFAULT again for the 
RC3 of kernel 6.18. Unfortunately my AMD Radeon HD6870 doesn't work with 
the latest patches.

But that doesn't matter because we disable the above kernel options by 
default. We don't need power management for PCI Express because of boot 
issues and performance issues.

Cheers,
Christian