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[75.72.117.212]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8fc2c91cdfbsm1736572285a.34.2026.05.06.10.44.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 06 May 2026 10:44:32 -0700 (PDT) Message-ID: <7f3a0f16-5159-4bbc-8b15-9b5841603bf6@riscstar.com> Date: Wed, 6 May 2026 12:44:28 -0500 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next 10/12] net: stmmac: tc956x: add TC956x/QPS615 support To: Xilin Wu , 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 Cc: 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> <20260501155421.3329862-11-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: 8bit On 5/5/26 9:30 PM, Xilin Wu wrote: > On 5/1/2026 11:54 PM, Alex Elder wrote: >> From: Daniel Thompson >> >> Toshiba TC956x is an Ethernet AVB/TSN bridge and is essentially a >> small and highly-specialized SoC. TC956x includes an "eMAC" subsystem >> that can be accessed, along with several other peripherals, via two >> PCIe endpoint functions. There is a main driver for the endpoint that >> decomposes things and creates auxiliary bus devices to model the SoC. >> >> The eMAC consists of a Designware XGMAC, XPCS and PMA. Each eMAC is >> supported by an MSIGEN that bridges TC956x level interrupts to PCIe >> MSIs. >> >> Add a driver for the eMAC/MSIGEN combination. >> >> Co-developed-by: Alex Elder >> Signed-off-by: Alex Elder >> Signed-off-by: Daniel Thompson >> --- >>   drivers/net/ethernet/stmicro/stmmac/Kconfig   |  13 + >>   drivers/net/ethernet/stmicro/stmmac/Makefile  |   2 + >>   .../ethernet/stmicro/stmmac/dwmac-tc956x.c    | 791 ++++++++++++++++++ >>   include/soc/toshiba/tc956x-dwmac.h            |  84 ++ >>   4 files changed, 890 insertions(+) >>   create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-tc956x.c >>   create mode 100644 include/soc/toshiba/tc956x-dwmac.h >> >> diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/ >> net/ethernet/stmicro/stmmac/Kconfig >> index e3dd5adda5aca..66bcfaccbe21f 100644 >> --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig >> +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig >> @@ -404,6 +404,19 @@ config DWMAC_MOTORCOMM >>         This enables glue driver for Motorcomm DWMAC-based PCI Ethernet >>         controllers. Currently only YT6801 is supported. >> +config DWMAC_TC956X >> +    tristate "Toshiba TC956X DWMAC support" >> +    depends on PCI >> +    depends on COMMON_CLK >> +    depends on TOSHIBA_TC956X_PCI >> +    default m if TOSHIBA_TC956X_PCI > > Hi Alex, > > I think GENERIC_IRQ_CHIP should be selected here. Yes there are a number of things missing in the Kconfig definitions and I'm working through them this week. And yes, since we use irq_generic_chip_ops we must ensure CONFIG_GENERIC_IRQ_CHIP is enabled here. > Thank you for the driver. Thank you for your feedback (this and others I see). -Alex