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[2003:ea:8f47:b600:41b3:37ed:a502:9002]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-42f7d222506sm11795875f8f.28.2025.12.05.13.16.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Dec 2025 13:16:44 -0800 (PST) Message-ID: <10441fbd-8022-402e-8551-e0f8ec0449f0@gmail.com> Date: Fri, 5 Dec 2025 22:16:42 +0100 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC] powerpc: switch two fixed phy links to full duplex To: Andrew Lunn Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Pantelis Antoniou , "devicetree@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "netdev@vger.kernel.org" References: <64533952-1299-4ae2-860d-b34b97a24d98@gmail.com> <5d302153-c7f6-48dc-95cc-0dc4f25045c6@lunn.ch> Content-Language: en-US From: Heiner Kallweit In-Reply-To: <5d302153-c7f6-48dc-95cc-0dc4f25045c6@lunn.ch> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/5/2025 6:50 PM, Andrew Lunn wrote: > On Fri, Dec 05, 2025 at 06:21:50PM +0100, Heiner Kallweit wrote: >> These two fixed links are the only ones in-kernel specifying half duplex. >> If these could be switched to full duplex, then half duplex handling >> could be removed from phylib fixed phy, phylink, swphy. >> >> The SoC MAC's are capable of full duplex, fs_enet MAC driver is as well. >> Anything that would keep us from switching to full duplex? > > What do we know about the device on the other end of the link? Maybe > that is what is limiting it to 10Half? > I found no hint that anything is connected to this ethernet port on the two boards. Hard to find any information because the boards are >15yrs old. Seems this are dummy entries, just to let fs_enet load. > Andrew Heiner