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Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:58578) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1q7IZC-0000g0-Km; Thu, 08 Jun 2023 17:32:54 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1q7IZA-0000xW-5O; Thu, 08 Jun 2023 17:32:52 +0100 Date: Thu, 8 Jun 2023 17:32:52 +0100 From: "Russell King (Oracle)" To: Maxime Chevallier Cc: davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, Andrew Lunn , Florian Fainelli , Heiner Kallweit , linux-arm-kernel@lists.infradead.org, Horatiu.Vultur@microchip.com, Allan.Nielsen@microchip.com, UNGLinuxDriver@microchip.com, Vladimir Oltean Subject: Re: [PATCH net 2/2] net: phylink: use USXGMII control-word format to parse Q-USGMII word Message-ID: References: <20230608163415.511762-1-maxime.chevallier@bootlin.com> <20230608163415.511762-4-maxime.chevallier@bootlin.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230608163415.511762-4-maxime.chevallier@bootlin.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230608_093508_712893_C1F6D27A X-CRM114-Status: GOOD ( 10.95 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Jun 08, 2023 at 06:34:15PM +0200, Maxime Chevallier wrote: > diff --git a/include/uapi/linux/mdio.h b/include/uapi/linux/mdio.h > index 256b463e47a6..1d20a9082507 100644 > --- a/include/uapi/linux/mdio.h > +++ b/include/uapi/linux/mdio.h > @@ -444,4 +444,7 @@ static inline __u16 mdio_phy_id_c45(int prtad, int devad) > #define MDIO_USXGMII_5000FULL 0x1a00 /* 5000Mbps full-duplex */ > #define MDIO_USXGMII_LINK 0x8000 /* PHY link with copper-side partner */ > > +/* Usgmii control word is based on Usxgmii, masking away 2.5, 5 and 10Gbps */ > +#define MDIO_USGMII_SPD_MASK 0x0600 This isn't correct: 11:9 Speed: Bit 11, 10, 9: 1 1 1 to 011 = Reserved 0 1 0 = 1000 Mbps: 1000BASE-TX, 1000BASE-X 0 0 1 = 100 Mbps: 100BASE-TX, 100BASE-FX 0 0 0 = 10 Mbps: 10BASET, 10BASE2, 10BASE5 If we only look at bits 10 and 9, then we're interpreting the reserved combinations as valid as well. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel