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Mon, 4 Aug 2025 14:51:32 +0000 Date: Mon, 4 Aug 2025 16:51:28 +0200 From: Alexander Wilhelm To: "Russell King (Oracle)" Cc: Vladimir Oltean , Andrew Lunn , Heiner Kallweit , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Aquantia PHY in OCSGMII mode? 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X-MS-Exchange-CrossPremises-SCL: 1 X-MS-Exchange-CrossPremises-Processed-By-Journaling: Journal Agent X-OrganizationHeadersPreserved: FRZP192MB2437.EURP192.PROD.OUTLOOK.COM X-Proofpoint-GUID: fLec6h8DT6OYhlQ1j66pNlDGoSLFH2A_ X-Authority-Analysis: v=2.4 cv=O+I5vA9W c=1 sm=1 tr=0 ts=6890c8f6 cx=c_pps a=R+ZUZsJ5dPBp/xppKBZrrw==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=8gLI3H-aZtYA:10 a=aP3ZvlwEk41Fna-4CkEA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA0MDA4MSBTYWx0ZWRfX1BqgZdAgIwOS xSVCS0O7HBy3V9w+5sECnQiavbUSTOxlvKtQC3XQcTOrte/11iR5nGgYrVtI+0Twd5pckDhEfiN Si7kg0uKyXeNwJaoVyjnGzULh/HBO6E8Net11AireI/0OXrZUrnEEj3suVIgOZ9ota6NHia6VIM qTftkCOJ0UO8LoiaTKkSklGNHOynKJJTQ3S8Yr4NKqTsyKtb7kDdvEIs2/lrhhGzMG8IM9aVP0c xqwrbQJCpEmCJznzZHQpJ9Q8sPYroMR01X1AgKFFqwYWi9qIxZPEJSjlEY1ZVWGdFCtGnMAbHO7 ibjgNqBEUFYvBGmcMwfDKfAS7I2EKgsIdq7L6R7QAQpXlkBqiRpkg1x7dkLFN4= X-Proofpoint-ORIG-GUID: fLec6h8DT6OYhlQ1j66pNlDGoSLFH2A_ Am Mon, Aug 04, 2025 at 03:22:50PM +0100 schrieb Russell King (Oracle): > On Mon, Aug 04, 2025 at 03:01:44PM +0200, Alexander Wilhelm wrote: > > Am Mon, Aug 04, 2025 at 01:01:39PM +0300 schrieb Vladimir Oltean: > > > On Mon, Aug 04, 2025 at 08:17:47AM +0200, Alexander Wilhelm wrote: > > > > Am Fri, Aug 01, 2025 at 04:04:20PM +0300 schrieb Vladimir Oltean: > > > > > On Fri, Aug 01, 2025 at 01:23:44PM +0100, Russell King (Oracle) wrote: > > > > > > It looks like memac_select_pcs() and memac_prepare() fail to > > > > > > handle 2500BASEX despite memac_initialization() suggesting the > > > > > > SGMII PCS supports 2500BASEX. > > > > > > > > > > Thanks for pointing this out, it seems to be a regression introduced by > > > > > commit 5d93cfcf7360 ("net: dpaa: Convert to phylink"). > > > > > > > > > > If there are no other volunteers, I can offer to submit a patch if > > > > > Alexander confirms this fixes his setup. > > > > > > > > I'd be happy to help by applying the patch on my system and running some tests. > > > > Please let me know if there are any specific steps or scenarios you'd like me to > > > > focus on. > > > > > > > > Best regards > > > > Alexander Wilhelm > > > > > > Please find the attached patch. > > [...] > > > > Hi Vladimir, > > > > I’ve applied the patch you provided, but it doesn’t seem to fully resolve the > > issue -- or perhaps I’ve misconfigured something. I’m encountering the following > > error during initialization: > > > > mdio_bus 0x0000000ffe4e7000:00: AN not supported on 3.125GHz SerDes lane > > fsl_dpaa_mac ffe4e6000.ethernet eth0: pcs_config failed: -EOPNOTSUPP > > We're falling foul of the historic crap that 2500base-X is (802.3 were > very very late to the party in "standardising" it, but after there were > many different implementations with varying capabilities already on the > market.) > > aquantia_main.c needs to implement the .inband_caps() method, and > report what its actual capabilities are for the supplied interface > mode according to how it has been provisioned. Good to know, thank you. I found some implementation on marvell drivers that I could use as a reference. Best regards Alexander Wilhelm