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Thu, 03 Jun 2021 06:47:54 -0700 (PDT) Date: Thu, 3 Jun 2021 16:47:52 +0300 From: Vladimir Oltean To: "Sit, Michael Wei Hong" Cc: "Russell King (Oracle)" , "Jose.Abreu@synopsys.com" , "andrew@lunn.ch" , "hkallweit1@gmail.com" , "kuba@kernel.org" , "netdev@vger.kernel.org" , "peppe.cavallaro@st.com" , "alexandre.torgue@foss.st.com" , "davem@davemloft.net" , "mcoquelin.stm32@gmail.com" , "Voon, Weifeng" , "Ong, Boon Leong" , "Tan, Tee Min" , "vee.khee.wong@linux.intel.com" , "Wong, Vee Khee" , "linux-stm32@st-md-mailman.stormreply.com" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [RESEND PATCH net-next v4 0/3] Enable 2.5Gbps speed for stmmac Message-ID: <20210603134752.6kjkhzbxmhz3nfyu@skbuf> References: <20210603115032.2470-1-michael.wei.hong.sit@intel.com> <20210603130851.GS30436@shell.armlinux.org.uk> <20210603132809.2z3jhpuxaryaql6v@skbuf> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210603_064756_886425_5C0BE202 X-CRM114-Status: GOOD ( 29.22 ) 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 03, 2021 at 01:43:09PM +0000, Sit, Michael Wei Hong wrote: > Vladimir, > > > -----Original Message----- > > From: Vladimir Oltean > > Sent: Thursday, June 3, 2021 9:28 PM > > To: Russell King (Oracle) > > Cc: Sit, Michael Wei Hong ; > > Jose.Abreu@synopsys.com; andrew@lunn.ch; > > hkallweit1@gmail.com; kuba@kernel.org; > > netdev@vger.kernel.org; peppe.cavallaro@st.com; > > alexandre.torgue@foss.st.com; davem@davemloft.net; > > mcoquelin.stm32@gmail.com; Voon, Weifeng > > ; Ong, Boon Leong > > ; Tan, Tee Min > > ; vee.khee.wong@linux.intel.com; > > Wong, Vee Khee ; linux-stm32@st- > > md-mailman.stormreply.com; linux-arm- > > kernel@lists.infradead.org; linux-kernel@vger.kernel.org > > Subject: Re: [RESEND PATCH net-next v4 0/3] Enable 2.5Gbps > > speed for stmmac > > > > Michael, > > > > On Thu, Jun 03, 2021 at 02:08:51PM +0100, Russell King (Oracle) > > wrote: > > > Hi, > > > > > > On Thu, Jun 03, 2021 at 07:50:29PM +0800, Michael Sit Wei Hong > > wrote: > > > > Intel mGbE supports 2.5Gbps link speed by overclocking the > > clock > > > > rate by 2.5 times to support 2.5Gbps link speed. In this mode, > > the > > > > serdes/PHY operates at a serial baud rate of 3.125 Gbps and > > the PCS > > > > data path and GMII interface of the MAC operate at 312.5 > > MHz instead of 125 MHz. > > > > This is configured in the BIOS during boot up. The kernel > > driver is > > > > not able access to modify the clock rate for 1Gbps/2.5G mode > > on the > > > > fly. The way to determine the current 1G/2.5G mode is by > > reading a > > > > dedicated adhoc register through mdio bus. > > > > > > How does this interact with Vladimir's "Convert xpcs to > > phylink_pcs_ops" > > > series? Is there an inter-dependency between these, or a > > preferred > > > order that they should be applied? > > > > > > Thanks. > > > > My preferred order would be for my series to go in first, if > > possible, because I don't have hardware readily available to test, > > and VK already has tested my patches a few times until they > > reached a stable state. > > > > I went through your patches and I think rebasing on top of my > > phylink_pcs_ops conversion should be easy. > > > > Thanks. > Sure! I am okay to let you merge your codes and rebase my changes later on > Do let me know when I can start rebasing and send in the next revision Well, you are already copied to my patches, so you should get the notification email at the same time as I would. https://patchwork.kernel.org/project/netdevbpf/cover/20210602162019.2201925-1-olteanv@gmail.com/ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel