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Date: Mon, 25 Jul 2022 10:32:27 -0500 From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com> To: "Matwey V. Kornilov" <matwey.kornilov@...il.com>, hdegoede@...hat.com Cc: andriy.shevchenko@...ux.intel.com, carlo@...lessm.com, davem@...emloft.net, hkallweit1@...il.com, js@...21.net, linux-clk@...r.kernel.org, linux-wireless@...r.kernel.org, mturquette@...libre.com, netdev@...r.kernel.org, sboyd@...nel.org Subject: Re: [BISECTED] igb initialization failure on Bay Trail On 7/24/22 16:00, Matwey V. Kornilov wrote: > Hello, > > I've just found that the following commit > > 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL") > > breaks the ethernet on my Lex 3I380CW (Atom E3845) motherboard. The board is > equipped with dual Intel I211 based 1Gbps copper ethernet. It's not going to be simple, it's 4 yr old commit that fixes other issues with S0i3... > > Before the commit I see the following: > > igb 0000:01:00.0: added PHC on eth0 > igb 0000:01:00.0: Intel(R) Gigabit Ethernet Network Connection > igb 0000:01:00.0: eth0: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e4 > igb 0000:01:00.0: eth0: PBA No: FFFFFF-0FF > igb 0000:01:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s) > igb 0000:02:00.0: added PHC on eth1 > igb 0000:02:00.0: Intel(R) Gigabit Ethernet Network Connection > igb 0000:02:00.0: eth1: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e5 > igb 0000:02:00.0: eth1: PBA No: FFFFFF-0FF > igb 0000:02:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s) > > while when the commit is applied I see the following: > > igb 0000:01:00.0: added PHC on eth0 > igb 0000:01:00.0: Intel(R) Gigabit Ethernet Network Connection > igb 0000:01:00.0: eth0: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e4 > igb 0000:01:00.0: eth0: PBA No: FFFFFF-0FF > igb 0000:01:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s) > igb: probe of 0000:02:00.0 failed with error -2 > > Please note, that the second ethernet initialization is failed. > > > See also: http://www.lex.com.tw/products/pdf/3I380A&3I380CW.pdf
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