netdev - Re: [PATCH] PCI: Add PCI quirk to disable L0s ASPM state for RTL8125 2.5GbE Controller

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Message-ID: <79869ce4-c0d5-4b20-ad79-7b6244602d13@cixtech.com>
Date: Fri, 7 Mar 2025 09:38:52 +0800
From: "hans.zhang" <hans.zhang@...tech.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: bhelgaas@...gle.com, cix-kernel-upstream@...tech.com,
 linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
 Peter Chen <peter.chen@...tech.com>, ChunHao Lin <hau@...ltek.com>,
 Heiner Kallweit <hkallweit1@...il.com>, nic_swsd@...ltek.com,
 netdev@...r.kernel.org
Subject: Re: [PATCH] PCI: Add PCI quirk to disable L0s ASPM state for RTL8125
 2.5GbE Controller



On 2025/3/7 00:28, Bjorn Helgaas wrote:
> [Some people who received this message don't often get email from helgaas@...nel.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
> 
> EXTERNAL EMAIL
> 
> On Thu, Mar 06, 2025 at 11:32:04AM +0800, hans.zhang wrote:
>> On 2025/3/6 06:20, Bjorn Helgaas wrote:
>>> Sounds like this should be a documented erratum.  Realtek folks?  Or
>>> maybe an erratum on the other end of the link, which looks like a CIX
>>> Root Port:
>>>
>>>     https://admin.pci-ids.ucw.cz/read/PC/1f6c/0001
>>
>> Name: CIX P1 CD8180 PCI Express Root Port
>>
>> 0000:90:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0001:60:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0002:00:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0003:30:00.0 PCI bridge [0604]: Device [1f6c:0001]
>>
>>
>> This URL does not appear right, how should be changed, is it you? Or can you
>> tell me who I should call to change it?
>>
>> The correct answer is:
>> 0000:90:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0001:C0:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0002:60:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0003:30:00.0 PCI bridge [0604]: Device [1f6c:0001]
>> 0004:00:00.0 PCI bridge [0604]: Device [1f6c:0001]
> 
> This part of the web page is just commentary.  In this case it's just
> an example of what devices might be on some system.  It's not a
> requirement that all systems have this many devices or devices at
> these addresses.
> 
> The only important parts are the Vendor ID, Device ID, and the name
> ("CIX P1 CD8180 PCI Express Root Port").  If those are correct, no
> need to do anything.

I see. Thank you very much Bjorn.

Best regards,
Hans