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[75.72.117.212]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-51040b80a4dsm20498971cf.24.2026.05.01.11.07.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 May 2026 11:07:50 -0700 (PDT) Message-ID: Date: Fri, 1 May 2026 13:07:47 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next 02/12] net: pcs: pcs-xpcs: select operating mode for 10G-baseR capable PCS To: Andrew Lunn Cc: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, maxime.chevallier@bootlin.com, rmk+kernel@armlinux.org.uk, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linusw@kernel.org, brgl@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, Daniel Thompson , mohd.anwar@oss.qualcomm.com, a0987203069@gmail.com, alexandre.torgue@foss.st.com, ast@kernel.org, boon.khai.ng@altera.com, chenchuangyu@xiaomi.com, chenhuacai@kernel.org, daniel@iogearbox.net, hawk@kernel.org, hkallweit1@gmail.com, inochiama@gmail.com, john.fastabend@gmail.com, julianbraha@gmail.com, livelycarpet87@gmail.com, matthew.gerlach@altera.com, mcoquelin.stm32@gmail.com, me@ziyao.cc, prabhakar.mahadev-lad.rj@bp.renesas.com, richardcochran@gmail.com, rohan.g.thomas@altera.com, sdf@fomichev.me, siyanteng@cqsoftware.com.cn, weishangjuan@eswincomputing.com, wens@kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260501155421.3329862-1-elder@riscstar.com> <20260501155421.3329862-3-elder@riscstar.com> Content-Language: en-US From: Alex Elder In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/1/26 11:50 AM, Andrew Lunn wrote: >> +static int xpcs_config_operating_mode(struct dw_xpcs *xpcs, int an_mode) >> +{ >> + int mdio_stat2, ret; >> + >> + switch (an_mode) { >> + case DW_AN_C37_SGMII: >> + case DW_AN_C37_1000BASEX: >> + case DW_2500BASEX: >> + mdio_stat2 = xpcs_read(xpcs, MDIO_MMD_PCS, MDIO_STAT2); >> + if (mdio_stat2 < 0) >> + return mdio_stat2; >> + >> + /* >> + * If this XPCS supports 10Gbase-R then it will be the default >> + * which prevents 1000base-X and slower from working correctly. > > It would be interesting to know if Toshiba messed up the integration > of the PCS, or there is an errata for the licensed IP. > > Anybody got access to the databook and erratas? > > Andrew I have the same question. We do not (currently/yet?) have access to this information. -Alex